Publications
Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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enhancing plant uptake of polychlorinated biphenyls and cadmium using tea saponin. | the potential of natural surfactant tea saponin to enhance uptake of polychlorinated biphenyls (pcbs) and cadmium (cd) by zea mays l. and saccharum officinarum l. was investigated. with addition of tea saponin at 0.01% in solution culture, the concentrations of pcb 14, pcb 18, pcb 77 and pcb 156 in root of corn seedling were 2.72, 2.68, 1.94 and 2.40 times as those of treatments without adding any surfactant, respectively. application of tea saponin to the soil significantly elevated pcb 5 accum ... | 2009 | 19477119 |
a preliminary study of insect fauna on pig carcasses located in sugarcane in winter in southeastern brazil. | minimum post-mortem intervals can be estimated based on analyses of the pattern of insect succession on a carcass. in order to successfully apply this approach, insect development rates must be considered with regard to local regional climatic conditions. this study is the first to analyse insect succession on carcasses decomposing in a sugarcane crop in brazil. in all seasons, chrysomya albiceps (wiedemann) (diptera: calliphoridae) and cochliomyia macellaria (fabricius) were frequent visitors d ... | 2009 | 19493195 |
gluconacetobacter diazotrophicus elicits a sugarcane defense response against a pathogenic bacteria xanthomonas albilineans. | a new role for the plant growth-promoting nitrogen-fixing endophytic bacteria gluconacetobacter diazotrophicus has been identified and characterized while it is involved in the sugarcane-xanthomonas albilineans pathogenic interactions. living g.diazotrophicus possess and/or produce elicitor molecules which activate the sugarcane defense response resulting in the plant resistance to x. albilineans, in this particular case controlling the pathogen transmission to emerging agamic shoots. a total of ... | 2006 | 19516988 |
inheritance of resistance to bacillus thuringiensis cry1ab protein in the sugarcane borer (lepidoptera: crambidae). | inheritance traits of a cry1ab-resistant strain of the sugarcane borer, diatraea saccharalis (f.) were analyzed using various genetic crosses. reciprocal parental crosses between cry1ab-susceptible and cry1ab-resistant populations, f(1) by f(1) crosses, and backcrosses of f(1) with the cry1ab-resistant population were successfully completed. larval mortality of the parental and cross-populations were assayed on cry1ab diet and bacillus thuringiensis (bt)-corn leaf tissue. maternal effects and se ... | 2009 | 19527726 |
pha(mcl) biosynthesis systems in pseudomonas aeruginosa and pseudomonas putida strains show differences on monomer specificities. | the production of pha from plant oils by pseudomonas species soil isolated from a sugarcane crop was evaluated. out of 22 bacterial strains three were able to use efficiently plant oils to grow and to accumulate pha. pseudomonas putida and pseudomonas aeruginosa strains produced pha presenting differences on monomer composition compatible with variability on monomer specificity of their pha biosynthesis system. the molar fraction of 3-hydroxydodecanoate detected in the pha was linearly correlate ... | 2009 | 19540884 |
effects of the level of sugarcane molasses on growth and carcass performance of caribbean growing pigs reared under a ground sugarcane stalks feeding system. | the influence of the level of sugarcane (sc) molasses on growth performance, carcass traits, and meat quality in creole (cr) growing pigs fed with ground sugarcane stalks (gcs)-based diet was studied in a mixed farming system context. the aim of the study was to optimize the growth performance of cr pigs with sc-molasses as an energy source in this unconventional feeding. a total of 32 cr pigs were used from 30 to 60 kg of body weight (bw). the experimental dietary treatments consisted of four l ... | 2010 | 19544006 |
long-term water quality trends after implementing best management practices in south florida. | a mandatory best management practices (bmp) program was implemented in the everglades agricultural area (eaa) farms basin-wide in 1995 as required by the everglades forever act to reduce p loads in drainage water reaching the everglades ecosystem. all farms in the eaa basin implement similar bmps, and basin wide p load reductions have exceeded the 25% reduction required by law; however, differences remain in water quality between subbasins. our objective was to determine long-term trends in p lo ... | 2013 | 19549945 |
enzymatic hydrolysis of steam-pretreated lignocellulosic materials with trichoderma atroviride enzymes produced in-house. | improvement of the process of cellulase production and development of more efficient lignocellulose-degrading enzymes are necessary in order to reduce the cost of enzymes required in the biomass-to-bioethanol process. | 2009 | 19580644 |
triticum mosaic virus: a distinct member of the family potyviridae with an unusually long leader sequence. | the complete genome sequence of triticum mosaic virus (trimv), a member in the family potyviridae, has been determined to be 10,266 nucleotides (nt) excluding the 3' polyadenylated tail. the genome encodes a large polyprotein of 3,112 amino acids with the "hall-mark proteins" of potyviruses, including a small overlapping gene, pipo, in the p3 cistron. the genome of trimv has an unusually long 5' nontranslated region of 739 nt with 12 translation initiation codons and three small open reading fra ... | 2009 | 19594313 |
consistent patterns in leaf lamina and leaf vein carbon isotope composition across ten herbs and tree species. | wide-spread post-photosynthetic fractionation processes deplete metabolites and plant compartments in (13)c relative to assimilates to varying degrees. fragmentation fractionation and exchange of metabolites with distinct isotopic signatures across organ boundaries further modify the patterns of plant isotopic composition. heterotrophic organs tend to become isotopically heavier than the putative source material as a result of respiratory metabolism. in addition fractionation may occur during me ... | 2009 | 19603469 |
experimental evidence indicating that mastreviruses probably did not co-diverge with their hosts. | despite the demonstration that geminiviruses, like many other single stranded dna viruses, are evolving at rates similar to those of rna viruses, a recent study has suggested that grass-infecting species in the genus mastrevirus may have co-diverged with their hosts over millions of years. this "co-divergence hypothesis" requires that long-term mastrevirus substitution rates be at least 100,000-fold lower than their basal mutation rates and 10,000-fold lower than their observable short-term subs ... | 2009 | 19607673 |
impact of hurricane rita storm surge on sugarcane borer (lepidoptera: crambidae) management in louisiana. | twelve thousand to 16,000 ha of louisiana sugarcane (saccharum spp.) fields were flooded by saltwater from the hurricane rita storm surge in september 2005. a four treatment, 12-replication study comparing storm surge flooded and nonflooded plant and ratoon sugarcane fields was conducted during summer 2006 to assess sugarcane borer, diatraea saccharalis (f.), pest severity, pest control actions, and soil-associated arthropod abundance and diversity. even with a significant 2.4-fold increase in t ... | 2009 | 19610419 |
genetic variability of native populations of wasmannia forel (hymenoptera: formicidae) and their biogeographical implications. | wasmannia auropunctata (roger) and wasmannia rochai forel are economically important ants in the southeast and southwest regions of bahia state, brazil. randomly amplified polymorphic dna (rapd) markers were used to distinguish and analyze the genetic variability of populations of both species from ilhéus, jequié, ba and french guyana. the genetic distances among w. auropunctata and w.rochai populations (55.8-71.4%) suggest genetic differentiation among them. wasmannia auropunctata populations f ... | 2009 | 19618055 |
alkalithermophilic actinomycetes in a subtropical area of jujuy, argentina. | the objective of this study was to examine the alkalithermophilic actinomycete communities in the subtropical environment of jujuy, argentina, characterized by sugarcane crops. laceyella putida, laceyella sacchari, thermoactinomyces intermedius, thermoactinomyces vulgaris and thermoflavimicrobium dichotomicum were isolated on the media with novobiocin, from sugar cane plants and renewal rhizospheres, and grass and wood soils. soil ph was almost neutral or lightly alkaline, except for grass soil ... | 2009 | 19623902 |
simultaneous detection and identification of four sugarcane viruses by one-step rt-pcr. | sugarcane mosaic disease (smd) caused by the sugarcane mosaic virus (scmv), sorghum mosaic virus (srmv) and sugarcane streak mosaic virus (scsmv) and sugarcane yellow leaf disease (syld) caused by the sugarcane yellow leaf virus (scylv) are the two most prevalent and economically important viral diseases of sugarcane. in this study, a one-step quadruplex reverse transcription (rt)-pcr method that employed virus-specific primers was developed for the simultaneous detection and differentiation of ... | 2009 | 19646484 |
the complete genome sequence of triticum mosaic virus, a new wheat-infecting virus of the high plains. | the genome of triticum mosaic virus (trimv), a recently discovered mite-transmitted wheat potyvirus, was sequenced, characterized, and compared to other members of the family potyviridae. trimv has a single mrna strand of 10,266 nucleotides with a predicted polyprotein consisting of 3,112 peptides. protein alignments of the coat protein demonstrate that trimv has 45.9% identity to sugarcane streak mosaic virus strain ap (scsmv-ap), but shares only 23.2% identity to wheat streak mosaic virus. alt ... | 2009 | 19649764 |
a two-dimensional electrophoretic profile of the proteins secreted by herbaspirillum seropedicae strain z78. | herbaspirillum seropedicae is an endophytic bacterium that associates with rice, sugarcane and other economically important crops. secreted proteins play a key role in the plant-bacterial interaction. using 2d electrophoresis and peptide mass fingerprint mass spectrometry, 63 protein spots representing 41 different secreted proteins were identified during growth of h. seropedicae under nitrogen-sufficient conditions. in silico analysis showed that 25.4% of the proteins had signal peptides and 15 ... | 2009 | 19664734 |
atrazine and terbuthylazine mineralization by an arthrobacter sp. isolated from a sugarcane-cultivated soil in kenya. | a tropical soil from a kenyan sugarcane-cultivated field showed a very high capability to mineralize (14)c-ring-labeled atrazine. in laboratory experiments this soil mineralized about 90% of the applied atrazine within 98 d. the atrazine-degrading microbial community was enriched in liquid cultures containing atrazine as the sole n source and 100 mgl(-1) glucose as additional c source. from the enrichment culture a bacterial strain was isolated and identified by comparative sequence analysis of ... | 2009 | 19674769 |
degradation of aflatoxin b(1) by fungal laccase enzymes. | the enzymatic degradation of aflatoxin b(1) (afb(1)) by white rot fungi through laccase production was investigated in different liquid media. a significant (p<0.0001) correlation was observed between laccase activity and afb(1) degradation exhibited by representatives of peniophora and pleurotus ostreatus cultivated in minimal salts (msm) (r=0.93) and mineral salts - malt extract (msb-meb) (r=0.77) liquid media. peniophora sp. scc0152 cultured in msb-meb liquid medium supplemented with veratryl ... | 2009 | 19683355 |
hydrolysis of cellulose derived from steam exploded bagasse by penicillium cellulases: comparison with commercial cellulase. | a complete cellulase from penicillium pinophilum was evaluated for the hydrolysis of alpha-cellulose derived from steam exploded sugarcane bagasse and other cellulosic substrates. alpha-cellulose at 1% substrate concentration was completely hydrolyzed by penicillium cellulase within 3h wherein at 10% the hydrolysis was 100% within 24 h with an enzyme loading of 10 fpu/g. the hydrolysate yielded glucose as major end product as analyzed by hplc. under similar conditions, hydrolysis of sigmacell (m ... | 2009 | 19683917 |
isolation, expression and functional analysis of a putative rna-dependent rna polymerase gene from maize (zea mays l.). | rna-dependent rna polymerases (rdrps) in plants have been reported to be involved in post-transcriptional gene silencing (ptgs) and antiviral defense. in this report, an rdrp gene from maize (zmrdrp1) was obtained by rapid amplification of cdna ends (race) and rt-pcr. the mrna of zmrdrp1 was composed of 3785 nucleotides, including a 167 nt 5' untranslated region (utr), a 291 nt 3'utr and a 3327 nt open reading frame (orf), which encodes a putative protein of 1108 amino acids with an estimated mo ... | 2010 | 19685166 |
fermentation of sugarcane bagasse and chicken manure to calcium carboxylates under thermophilic conditions. | sugarcane bagasse and chicken manure were anaerobically fermented to carboxylic acids using a mixed culture of marine microorganisms at 55 degrees c. using the mixalco process--an example of consolidated bioprocessing--the resulting carboxylate salts can be converted to mixed alcohol fuels or gasoline. to enhance digestibility, sugarcane bagasse was lime pretreated with 0.1 g ca(oh)(2)/g dry biomass at 100 degrees c for 2 h. four-stage countercurrent fermentation of 80% sugarcane bagasse/20% chi ... | 2010 | 19711199 |
erratum to "high prevalence of b and g aflatoxin-producing fungi in sugarcane field soil in japan: heteroduplex panel analysis identifies a new genotype within aspergillus section flavi and aspergillus nomius". | 2004 | 19719553 | |
high prevalence of b and g aflatoxin-producing fungi in sugarcane field soil in japan: heteroduplex panel analysis identifies a new genotype within aspergillus section flavi and aspergillus nomius. | heteroduplex panel analysis (hpa) was previously developed for genetic identification of aspergillus section flavi strains, utilizing polymerase chain reaction-amplified fragments of the internal transcribed spacer (its) regions of the rrna gene. application of hpa to a field study demonstrated that a new type of fp-1 strains belonging to section flavi is predominantly distributed throughout sugarcane field soil in the southernmost islands of japan, and such a trend may also be the case in vietn ... | 2003 | 19719592 |
artisanal alcohol production in mayan guatemala: chemical safety evaluation with special regard to acetaldehyde contamination. | there is a lack of knowledge regarding the composition, production, distribution, and consumption of artisanal alcohol, particularly in the developing world. in nahualá, an indigenous mayan municipality located in highland guatemala, heavy alcohol consumption appears to have had a significant negative impact on health, a major role in cases of violence and domestic abuse, and a link to street habitation. cuxa, an artisanally, as well as commercially produced sugarcane alcohol, is widely consumed ... | 2009 | 19729189 |
purification and characterization of pectin lyase secreted by penicillium citrinum. | the importance of various parameters such as sugarcane juice concentration, ph of the medium, and effects of different solid supports for maximum secretion of pectin lyase from penicillium citrinum mtcc 8897 has been studied. the enzyme was purified to homogeneity by sephadex g-100 and deae-cellulose chromatography. the molecular mass determined by sds-page was 31 kda. the k(m) and k(cat) values were found to be 1 mg/ml and 76 sec(-1), respectively. the optimum ph of the purified pectin lyase wa ... | 2009 | 19747102 |
a novel sugarcane-infecting mastrevirus from south africa. | the sugarcane-infecting streak viruses (sisvs) are a diverse collection of mastreviruses (family geminiviridae) within the african streak virus group. four sisvs have currently been described, including the well-characterized maize streak virus. here, we present a full annotated sequence record of an isolate of a new sisv species, saccharum streak virus (sacsv), isolated in south africa. the isolate shares less than 66% identity with any other mastrevirus, but is most closely related to urochloa ... | 2009 | 19756359 |
identification of new variants of scmv causing sugarcane mosaic in india and assessing their genetic diversity in relation to scmv type strains. | sugarcane mosaic virus (scmv) is one of the two causative viruses of mosaic in sugarcane, a sugar crop widely grown under tropical and subtropical conditions worldwide. although molecular characterization of scmv strains was reported from many countries, strains occurring in india, a major sugarcane producer have not been reported so far. twenty-six sugarcane samples represented by seven major sugarcane growing states in india and usa were subjected to reverse-transcription polymerase chain reac ... | 2009 | 19757007 |
regulation of hmgcoa reductase activity by policosanol and octacosadienol, a new synthetic analogue of octacosanol. | octacosa-10,19-dien-1-ol is a newly synthesized long-chain alcohol, an unsaturated analogue of 1-octacosanol, the major component of policosanol, the purified natural mixture of different higher aliphatic alcohols obtained from sugarcane wax. our efficient synthetic protocol (five steps with 50% overall yield) is well suited for gram scale preparations and a rapid generation of analogues with different degrees of unsaturation. beneficial effects of policosanol in the prevention of atherosclerosi ... | 2009 | 19763655 |
acid hydrolysis of sugarcane bagasse for lactic acid production. | in order to use sugarcane bagasse as a substrate for lactic acid production, optimum conditions for acid hydrolysis of the bagasse were investigated. after lignin extraction, the conditions were varied in terms of hydrochloric (hcl) or sulfuric (h(2)so(4)) concentration (0.5-5%, v/v), reaction time (1-5h) and incubation temperature (90-120 degrees c). the maximum catalytic efficiency (e) was 10.85 under the conditions of 0.5% of hcl at 100 degrees c for 5h, which the main components (in gl(-1)) ... | 2010 | 19766480 |
ethanol and xylitol production from glucose and xylose at high temperature by kluyveromyces sp. iipe453. | a yeast strain kluyveromyces sp. iipe453 (mtcc 5314), isolated from soil samples collected from dumping sites of crushed sugarcane bagasse in sugar mill, showed growth and fermentation efficiency at high temperatures ranging from 45 degrees c to 50 degrees c. the yeast strain was able to use a wide range of substrates, such as glucose, xylose, mannose, galactose, arabinose, sucrose, and cellobiose, either for growth or fermentation to ethanol. the strain also showed xylitol production from xylos ... | 2009 | 19768475 |
complete genome sequence of the sugarcane nitrogen-fixing endophyte gluconacetobacter diazotrophicus pal5. | gluconacetobacter diazotrophicus pal5 is an endophytic diazotrophic bacterium that lives in association with sugarcane plants. it has important biotechnological features such as nitrogen fixation, plant growth promotion, sugar metabolism pathways, secretion of organic acids, synthesis of auxin and the occurrence of bacteriocins. | 2009 | 19775431 |
ethanol production from sugarcane bagasse hydrolysate using pichia stipitis. | the objective of this study was to evaluate the ethanol production from the sugars contained in the sugarcane bagasse hemicellulosic hydrolysate with the yeast pichia stipitis dsm 3651. the fermentations were carried out in 250-ml erlenmeyers with 100 ml of medium incubated at 200 rpm and 30 degrees c for 120 h. the medium was composed by raw (non-detoxified) hydrolysate or by hydrolysates detoxified by ph alteration followed by active charcoal adsorption or by adsorption into ion-exchange resin ... | 2010 | 19802721 |
the water-deficit stress- and red-rot-related genes in sugarcane. | sugarcane is an important international commodity as a valuable agricultural crop especially in developing countries. sequencing was carried out to generate >35,000 expressed sequence tags (ests) from healthy as well as red-rot-infected tissue of indian subtropical variety of sugarcane. subsequent clustering with existing sugarcane ests in public databases identified 4,087 clusters, including 85 clusters that preferentially express upon colletotrichum falcatum (red-rot) infection, which were pre ... | 2010 | 19809842 |
kinetics of growth and enhanced sophorolipids production by candida bombicola using a low-cost fermentative medium. | in this study, effect of various parameters on sophorolipid (sl) production by the yeast candida bombicola was investigated for the enhancing of its production by employing l18 orthogonal array design of experiments. at optimum conditions of sugarcane molasses 50 g l(-1), soybean oil 50 g l(-1), inoculum size 5% (v/v), temperature 30 degrees c, inoculum age 2 days, and agitation 200 rpm, the yeast produced almost equal amounts of the product in batch shake flasks and in a 3-l fermentor without a ... | 2010 | 19834651 |
natural yeast flora of different varieties of grapes used for wine making in india. | the natural saccharomyces and non-saccharomyces yeast flora present on the grape berries significantly affect wine production. six grape varieties, bangalore blue, zinfandel, cabernet, chenin blanc, sauvignon blanc and shiraz are being used in india for wine making. the yeast diversity was studied on the basis of morphological, colony, physiological characteristics and 5.8s-its sequencing of rdna of the isolates. eleven different species belonging to seven genera were identified as: candida azym ... | 2009 | 19835764 |
scale-up of diluted sulfuric acid hydrolysis for producing sugarcane bagasse hemicellulosic hydrolysate (sbhh). | sugarcane bagasse was pretreated with diluted sulfuric acid to obtain sugarcane bagasse hemicellulosic hydrolysate (sbhh). experiments were conducted in laboratory and semi-pilot reactors to optimize the xylose recovery and to reduce the generation of sugar degradation products, as furfural and 5-hydroxymethylfurfural (hmf). the hydrolysis scale-up procedure was based on the h-factor, that combines temperature and residence time and employs the arrhenius equation to model the sulfuric acid conce ... | 2010 | 19846294 |
knowledge, perceptions and practices of farming communities on linkages between malaria and agriculture in mvomero district, tanzania. | this study was carried out to determine knowledge, perceptions and practices of farming communities on linkages between agriculture and malaria in mvomero district in tanzania. a total of 661 adult males and females were interviewed using a structured questionnaire. most respondents (85.6%) were engaged in crop production. significantly, a larger proportion (55.2%) of the respondents had primary school education (p<0.001). majority (88.2%) respondents described malaria as the most important publ ... | 2010 | 19854143 |
within-field damage and distribution patterns of the stalk borer, eldana saccharina (lepidoptera: pyralidae), in sugarcane and a comparison with nematode damage. | the occurrence of eldana saccharina (lepidoptera: pyralidae) was monitored in grids represented by plots in 12 nematicide trials in south african sugarcane fields. the trials encompassed a total of eight plant cane crops and 22 ratoon crops and were situated within commercial cane fields. several measurements were made to characterize the damage caused by e. saccharina. these included the number of internodes per stalk, the percentage of internodes damaged and the percentage of stalks damaged. t ... | 2010 | 19860988 |
adverse health effects due to arsenic exposure: modification by dietary supplementation of jaggery in mice. | populations of villages of eastern india and bangladesh and many other parts of the world are exposed to arsenic mainly through drinking water. due to non-availability of safe drinking water they are compelled to depend on arsenic-contaminated water. generally, poverty level is high in those areas and situation is compounded by the lack of proper nutrition. the hypothesis that the deleterious health effects of arsenic can be prevented by modification of dietary factors with the availability of a ... | 2010 | 19874834 |
ethanol production from sugarcane bagasse by zymomonas mobilis using simultaneous saccharification and fermentation (ssf) process. | considerable efforts have been made to utilize agricultural and forest residues as biomass feedstock for the production of second-generation bioethanol as an alternative fuel. fermentation utilizing strains of zymomonas mobilis and the use of simultaneous saccharification and fermentation (ssf) process has been proposed. statistical experimental design was used to optimize the conditions of ssf, evaluating solid content, enzymatic load, and cell concentration. the optimum conditions were found t ... | 2010 | 19876607 |
efficient targeting of polyhydroxybutyrate biosynthetic enzymes to plant peroxisomes requires more than three amino acids in the carboxyl-terminal signal. | metabolic engineering of plant peroxisomes for biotechnological purposes typically requires efficient peroxisomal targeting of heterologous proteins. type i peroxisomal targeting signals (pts1) consist of three uncleaved amino acids (skl or a conserved variant) at the carboxyl terminus and direct nuclear-encoded proteins into the peroxisomes of eukaryotic cells. pts1 fusion with a heterologous protein results in peroxisomal targeting of that protein, but the minimal length of pts1 required for e ... | 2010 | 19879015 |
industrial fuel ethanol yeasts contain adaptive copy number changes in genes involved in vitamin b1 and b6 biosynthesis. | fuel ethanol is now a global energy commodity that is competitive with gasoline. using microarray-based comparative genome hybridization (acgh), we have determined gene copy number variations (cnvs) common to five industrially important fuel ethanol saccharomyces cerevisiae strains responsible for the production of billions of gallons of fuel ethanol per year from sugarcane. these strains have significant amplifications of the telomeric sno and snz genes, which are involved in the biosynthesis o ... | 2009 | 19897511 |
isolation, characterization, and effect of fluorescent pseudomonads on micropropagated sugarcane. | in this study, we report on the isolation, identification, and characterization of seven fluorescent pseudomonads isolated from the roots, shoots, and rhizosphere soil of sugarcane and their impacts on the growth of sugarcane plantlets. 16s rrna gene sequence of five isolates showed close homology with pseudomonas putida, one with pseudomonas graminis, and one with pseudomonas fluorescens. physiological and biochemical characterizations were determined using api50ch and qts24 identification kits ... | 2009 | 19898541 |
cellulases from penicillium funiculosum: production, properties and application to cellulose hydrolysis. | the objective of this work is to investigate the utilization of two abundant agricultural residues in brazil for the production and application of cellulolytic enzymes. different materials obtained after pretreatment of sugarcane bagasse, as well as pure synthetic substrates, were considered for cellulase production by penicillium funiculosum. the best results for fpase (354 u l(-1)) and beta-glucosidase (1,835 u l(-1)) production were observed when sugarcane bagasse partially delignified cellul ... | 2010 | 19902281 |
variant cry1ia toxins generated by dna shuffling are active against sugarcane giant borer. | sugarcane giant borer (telchin licus licus) is a serious sugarcane pest in americas whose endophytic lifestyle hampers effective chemical and biological controls. therefore, development of alternative control methods is extremely important. envisaging development of transgenic plants resistant to this pest, we investigated the effect of the bacillus thuringiensis cry protein cry1ia12synth (truncated protein lacking c-terminus with plant codon usage) and variants against t. l. licus. cry1ia12synt ... | 2010 | 19931577 |
genetic diversity of saccharum officinarum accessions in pakistan as revealed by random amplified polymorphic dna. | genetic diversity of 20 sugarcane accessions in pakistan was studied using 21 random amplified polymorphic dna markers. the mean genetic distance between the cultivars was 39.03%, demonstrating that a large part of the genome is similar among the accessions. this probably arises from a lack of parental diversity, with few clones, which are themselves related, contributing to the parentage of these varieties. among the varieties, none was found to be totally distinct and divergent from the others ... | 2009 | 19937582 |
the potential impacts of biomass feedstock production on water resource availability. | biofuels are a major topic of global interest and technology development. whereas bioenergy crop production is highly dependent on water, bioenergy development requires effective allocation and management of water. the objectives of this investigation were to assess the bioenergy production relative to the impacts on water resource related factors: (1) climate and weather impact on water supplies for biomass production; (2) water use for major bioenergy crop production; and (3) potential alterna ... | 2010 | 19939667 |
multicomponent cellulase production by cellulomonas biazotea ncim-2550 and its applications for cellulosic biohydrogen production. | among four cellulolytic microorganisms examined, cellulomonas biazotea ncim-2550 can grow on various cellulosic substrates and produce reducing sugar. the activity of cellulases (endoglucanase, exoglucanase, and cellobiase), xylanase, amylase, and lignin class of enzymes produced by c. biazotea was mainly present extracellularly and the enzyme production was dependent on cellulosic substrates (carboxymethyl cellulose [cmc], sugarcane bagasse [scb], and xylan) used for growth. effects of physicoc ... | 2010 | 19941342 |
crop diversity for yield increase. | traditional farming practices suggest that cultivation of a mixture of crop species in the same field through temporal and spatial management may be advantageous in boosting yields and preventing disease, but evidence from large-scale field testing is limited. increasing crop diversity through intercropping addresses the problem of increasing land utilization and crop productivity. in collaboration with farmers and extension personnel, we tested intercropping of tobacco, maize, sugarcane, potato ... | 2009 | 19956624 |
landscape risk factors for attacks of vampire bats on cattle in sao paulo, brazil. | vampire-bat (desmodus rotundus) attacks on cattle are a major concern for cattle-raising area. blood loss and paralytic rabies due to bat bites can impose severe losses on the livestock. we took four municipalities inside the sao joao da boa vista veterinary district (sao paulo, brazil) as a study area and tested a set of landscape features for spatial correlation with distance to areas in which vampire-bat attacks on cattle were documented. bat- and cattle-related data from the sao paulo state ... | 2010 | 20004487 |
adsorption behavior of heavy metals onto chemically modified sugarcane bagasse. | a new process for the xanthation of sugarcane (saccharum officinarum) bagasse was investigated for the separation of cadmium, lead, nickel, zinc and copper from their aqueous solutions. adsorption capacity of the charred xanthated sugarcane bagasse (cxsb) was found to be significantly more than the several biosorbents reported in the literatures. the modified material was characterized by ftir and elemental analysis. the kinetics of sorption of the tested metals was fast, reaching equilibrium wi ... | 2010 | 20006923 |
selenium accumulation by forage and grain crops and volatilization from seleniferous soils amended with different organic materials. | greenhouse and field experiments were conducted to study the direct and residual effect of applying different organic materials on se accumulation by crops and volatilization from seleniferous soils of northwestern india. among organic manures, press mud and poultry manures proved 4-5 times more effective in reducing se accumulation by different crops than farmyard manure. efficiency of organic manures increased with increase in application rates. application of both press mud and poultry manure ... | 2010 | 20015536 |
proteome of gluconacetobacter diazotrophicus co-cultivated with sugarcane plantlets. | gluconacetobacter diazotrophicus is a micro-aerobic bacterium able to fix atmospheric nitrogen in endophytic mode. a proteomic approach was used to analyze proteins differentially expressed in the presence and absence of sugarcane plantlets. two-dimensional gel electrophoresis (2-de) showed 42 spots with altered levels of expression. analysis of these spots by matrix-assisted laser desorption ionization time-of-flight in tandem (maldi-tof-tof) identified 38 proteins. differentially expressed pro ... | 2010 | 20026003 |
comparative production of ligninolytic enzymes by phanerochaete chrysosporium and polyporus sanguineus. | the aim of the present study was to compare the effect of a wide range of culture conditions on production of ligninolytic enzymes by polyporus sanguineus and phanerochaete chrysosporium. lignin peroxidase production by p. sanguineus was comparable with that of p. chrysosporium, although the culture conditions giving the highest yield varied greatly between the two fungi. highest yield of manganese peroxidase by p. sanguineus obtained in 0.5% malt extract medium and peptone or malt extract suppl ... | 2009 | 20029532 |
mathematical modeling of kluyveromyces marxianus growth in solid-state fermentation using a packed-bed bioreactor. | this work investigated the growth of kluyveromyces marxianus nrrl y-7571 in solid-state fermentation in a medium composed of sugarcane bagasse, molasses, corn steep liquor and soybean meal within a packed-bed bioreactor. seven experimental runs were carried out to evaluate the effects of flow rate and inlet air temperature on the following microbial rates: cell mass production, total reducing sugar and oxygen consumption, carbon dioxide and ethanol production, metabolic heat and water generation ... | 2010 | 20035365 |
laccase production by aspergillus heteromorphus using distillery spent wash and lignocellulosic biomass. | laccase is among the major enzymes which plays an important role in ligninolytic system of fungi. laccase production by aspergillus heteromorphus was studied using anaerobically treated distillery spent wash (adsw) and lignocellulosic biomass. lignocellulosic biomass (rice straw, wheat straw and sugarcane bagasse) generated during biomass processing leads to solid waste and distillery spent wash is unwanted liquid waste produced by distilleries, both causes environmental pollution. two mineral m ... | 2010 | 20036461 |
selection system and co-cultivation medium are important determinants of agrobacterium-mediated transformation of sugarcane. | a reproducible method for transformation of sugarcane using various strains of agrobacterium tumefaciens (a. tumefaciens) (agl0, agl1, eha105 and lba4404) has been developed. the selection system and co-cultivation medium were the most important factors determining the success of transformation and transgenic plant regeneration. plant regeneration at a frequency of 0.8-4.8% occurred only when callus was transformed with a. tumefaciens carrying a newly constructed superbinary plasmid containing n ... | 2010 | 20041254 |
consolidated bioprocessing of sugarcane bagasse and chicken manure to ammonium carboxylates by a mixed culture of marine microorganisms. | the mixalco process, an example of consolidated bioprocessing (cbp), was utilized for anaerobic fermentation of 80% lime-treated sugarcane bagasse/20% chicken manure at 55 degrees celsius by a mixed culture of marine microorganisms. nh(4)hco(3) was recommended by this study to replace caco(3) buffer to neutralize the produced carboxylic acids. the resulting ammonium carboxylates can be converted to gasoline or mixed alcohol fuels by downstream processing. four-stage countercurrent fermentations ... | 2010 | 20044250 |
removal of zn2+ from aqueous single metal solutions and electroplating wastewater with wood sawdust and sugarcane bagasse modified with edta dianhydride (edtad). | this work describes the preparation of a new chelating material derived from wood sawdust, manilkara sp., and not only the use of a new support, but also a chemically modified sugarcane bagasse synthesized in our previous work to remove zn(2+) from aqueous solutions and electroplating wastewater. the first part describes the chemical modification of wood sawdust and sugarcane bagasse using ethylenediaminetetraacetic dianhydride (edtad) as modifying agent in order to introduce carboxylic acid and ... | 2010 | 20047793 |
xylooligosaccharides production from alkali-pretreated sugarcane bagasse using xylanases from thermoascus aurantiacus. | sugarcane bagasse hemicellulose was isolated in a one-step chemical extraction using hydrogen peroxide in alkaline media. the polysaccharide containing 80.9% xylose and small amounts of l-arabinose, 4-o-methyl-d-glucuronic acid and glucose, was hydrolyzed by crude enzymatic extracts from thermoascus aurantiacus at 50 degrees c. conditions of enzymatic hydrolysis leading to the best yields of xylose and xylooligosaccharides (dp 2-5) were investigated using substrate concentration in the range 0.5 ... | 2010 | 20066571 |
characterization of a phenazine and hexanoyl homoserine lactone producing pseudomonas aurantiaca strain pb-st2, isolated from sugarcane stem. | a novel strain of fluorescent pseudomonad (pb-st2) was isolated from surface-sterilized stems of sugarcane grown in pakistan. the bacterium was identified as pseudomonas aurantiaca on the basis of 16s rrna gene sequence analysis and results from physiological and biochemical characteristics carried out with api50 ch and qts 24 bacterial identification kits. assays using substrate specific media for enzymes revealed lipase and protease activities but cellulase, chitinase, or pectinase were not de ... | 2009 | 20075638 |
maize streak virus: an old and complex 'emerging' pathogen. | maize streak virus (msv; genus mastrevirus, family geminiviridae) occurs throughout africa, where it causes what is probably the most serious viral crop disease on the continent. it is obligately transmitted by as many as six leafhopper species in the genus cicadulina, but mainly by c. mbila naudé and c. storeyi. in addition to maize, it can infect over 80 other species in the family poaceae. whereas 11 strains of msv are currently known, only the msv-a strain is known to cause economically sign ... | 2010 | 20078771 |
plant antimicrobial peptides: an overview of supersage transcriptional profile and a functional review. | defensin, thionin and lipid transfer protein (ltp) gene families, which antimicrobial activity has an attractive use in protein engineering and transgenic production of agronomical important plants, have been here functionally reviewed. also, a transcriptional overview of a set of plant supersage libraries and analysis looking for 26 bp tags possibly annotated for those families is presented. tags differentially expressed (p = 0.05) or constitutively transcribed were identified from leaves or ro ... | 2010 | 20088771 |
anaerobic mixed-culture fermentation of aqueous ammonia-treated sugarcane bagasse in consolidated bioprocessing. | the mixalco process is an example of consolidated bioprocessing (cbp) in which anaerobic mixed-culture fermentation biochemically converts any biodegradable feedstock into carboxylate salts. downstream processing thermochemically transforms the resulting salts into mixed alcohol fuels or gasoline. to enhance digestibility, sugarcane bagasse was treated under mild conditions (55 degrees c, 24 h, and 30% aqueous ammonia solution with a loading of 10 ml/g dry biomass). using nh(4)hco(3) buffer, the ... | 2010 | 20091732 |
[attraction of sphenophorus levis vaurie adults (coleoptera: curculionidae) to vegetal tissues at different conservation levels]. | the occurrence of the sugarcane weevil sphenophorus levis vaurie is important in sugarcane in some regions in brazil. damage is caused by the larvae as they bore into the nodes and can reach 30 ton/ha/year. many control alternatives have been attempted, but none were satisfactory, except for the use of toxic baits. therefore, it is necessary to optimize their efficiency or to propose new techniques. the objective of the current study was to evaluate the attractiveness of adults of s. levis to su ... | 2009 | 20098932 |
heat causes oligomeric disassembly and increases the chaperone activity of small heat shock proteins from sugarcane. | small heat shock proteins (shsp) constitute an important chaperone family linked to conformational diseases. in plants, shsps prevent protein aggregation by acting as thermosensors and to enhance cell stress tolerance. sshsp17.2 and sshsp17.9 are the most highly expressed class i shsps in sugarcane. they exist as dodecamers at 20 degrees c and have distinct substrate specificities. therefore, they are useful models to study how class i shsps work. here we present data on the effects of heat on t ... | 2016 | 20137963 |
solid state fermentation for extracellular polysaccharide production by lactobacillus confusus with coconut water and sugar cane juice as renewable wastes. | extracellular polysaccharide (eps) production by lactobacillus confusus in liquid and solid state fermentation was carried out using coconut water and sugarcane juice as renewable wastes. high concentrations of eps of 62 (sugarcane juice) and 18 g/l of coconut water were produced in solid state fermentation when nitrogen sources were reduced 5-fold from the original medium. | 2010 | 20139601 |
indirect land-use changes can overcome carbon savings from biofuels in brazil. | the planned expansion of biofuel plantations in brazil could potentially cause both direct and indirect land-use changes (e.g., biofuel plantations replace rangelands, which replace forests). in this study, we use a spatially explicit model to project land-use changes caused by that expansion in 2020, assuming that ethanol (biodiesel) production increases by 35 (4) x 10(9) liter in the 2003-2020 period. our simulations show that direct land-use changes will have a small impact on carbon emission ... | 2010 | 20142492 |
reproducible rna preparation from sugarcane and citrus for functional genomic applications. | high-throughput functional genomic procedures depend on the quality of the rna used. copurifying molecules can negatively impact the functionality of some plant rna preparations employed in these procedures. we present a simplified, rapid, and scalable sds/phenol-based method that provides the high-quantity and -quality rna required by the newly emerging biotechnology applications. the method is applied to isolating rna from tissues of two biotechnologically important crop plants, sugarcane and ... | 2009 | 20148085 |
sacralf1, a peptide signal from the grass sugarcane (saccharum spp.), is potentially involved in the regulation of tissue expansion. | rapid alkalinization factor (ralf) is part of a growing family of small peptides with hormone characteristics in plants. initially isolated from leaves of tobacco plants, ralf peptides can be found throughout the plant kingdom and they are expressed ubiquitously in plants. we took advantage of the small gene family size of ralf genes in sugarcane and the ordered cellular growth of the grass sugarcane leaves to gain information about the function of ralf peptides in plants. here we report the iso ... | 2010 | 20148351 |
genetic and physical fine mapping of scmv2, a potyvirus resistance gene in maize. | sugarcane mosaic virus (scmv) is an important virus pathogen both in european and chinese maize production, causing serious losses in grain and forage yield in susceptible cultivars. two major resistance loci confer resistance to scmv, one located on chromosome 3 (scmv2) and one on chromosome 6 (scmv1). we developed a large isogenic mapping population segregating in the scmv2, but not the scmv1 region, to minimize genetic variation potentially affecting expression of scmv resistance. we fine map ... | 2010 | 20155410 |
effect of lime pre-treatment on the synergistic hydrolysis of sugarcane bagasse by hemicellulases. | agricultural crop wastes are typically lignocellulosic in composition and thus partially recalcitrant to enzymatic degradation. the recalcitrant nature of plant biomass and the inability to obtain complete enzymatic hydrolysis has led to the establishment of various pre-treatment strategies. alkaline pre-treatments increase the accessibility of the exposed surface to enzymatic hydrolysis through the removal of acetyl and uronic acid substituents on hemicelluloses. unlike the use of steam and aci ... | 2010 | 20156678 |
complete nucleotide sequence and taxonomy of sugarcane streak mosaic virus, member of a novel genus in the family potyviridae. | the complete genomic sequence of a pakistani isolate of sugarcane streak mosaic virus (scsmv-pak) is determined to be 9782 nucleotides in length, excluding the 3' poly(a) tail, and it comprises a large open reading frame encoding a polyprotein of 3130 amino acid residues. the deduced polyprotein is likely to be cleaved at nine putative protease sites by three viral proteases to ten mature proteins. conserved motifs of orthologous proteins of other potyviruses are identified in corresponding posi ... | 2010 | 20162446 |
use of brazilian sugarcane bagasse ash in concrete as sand replacement. | sugarcane today plays a major role in the worldwide economy, and brazil is the leading producer of sugar and alcohol, which are important international commodities. the production process generates bagasse as a waste, which is used as fuel to stoke boilers that produce steam for electricity cogeneration. the final product of this burning is residual sugarcane bagasse ash (sba), which is normally used as fertilizer in sugarcane plantations. ash stands out among agroindustrial wastes because it re ... | 2010 | 20163947 |
production of cellulolytic enzymes by fungi acrophialophora nainiana and ceratocystis paradoxa using different carbon sources. | although a number of filamentous fungi, such as trichoderma and aspergillus, are well known as producers of cellulases, xylanases, and accessory cellulolytic enzymes, the search for new strains and new enzymes has become a priority with the increase in diversity of biomass sources. moreover, according to the type of pretreatment applied, biomass of the same type may require different enzyme blends to be efficiently hydrolyzed. this study evaluated cellulases, xylanases, and beta-glucosidases pro ... | 2010 | 20174889 |
genetic transformation and pyramiding of aprotinin-expressing sugarcane with cry1ab for shoot borer (chilo infuscatellus) resistance. | we evaluated the insecticidal toxicity of cry1aa, cry1ab and cry1ac toxins against neonate larvae of sugarcane shoot borer chilo infuscatellus snellen (lepidoptera: crambidae) in vitro on diet surface. with the lowest lc(50) value, cry1ab emerged as the most effective among the three toxins. sugarcane cultivars co 86032 and coj 64 were transformed with cry1ab gene driven by maize ubiquitin promoter through particle bombardment and agrobacterium-mediated transformation systems. gene pyramiding wa ... | 2010 | 20179936 |
diversity of endophytic bacteria in brazilian sugarcane. | endophytic bacteria live inside plant tissues without causing disease. studies of endophytes in sugarcane have focused on the isolation of diazotrophic bacteria. we examined the diversity of endophytic bacteria in the internal tissues of sugarcane stems and leaves, using molecular and biochemical methods. potato-agar medium was used to cultivate the endophytes; 32 isolates were selected for analysis. dna was extracted and the 16s rrna gene was partially sequenced and used for molecular identific ... | 2010 | 20198580 |
purification and biochemical properties of a glucose-stimulated beta-d-glucosidase produced by humicola grisea var. thermoidea grown on sugarcane bagasse. | the effect of several carbon sources on the production of mycelial-bound beta-glucosidase by humicola grisea var. thermoidea in submerged fermentation was investigated. maximum production occurred when cellulose was present in the culture medium, but higher specific activities were achieved with cellobiose or sugarcane bagasse. xylose or glucose (1%) in the reaction medium stimulated beta-glucosidase activity by about 2-fold in crude extracts from mycelia grown in sugarcane bagasse. the enzyme w ... | 2010 | 20221730 |
mitochondria in the midgut epithelial cells of sugarcane borer parasitized by cotesia flavipes (cameron, 1891). | the sugarcane borer diatraea saccharalis (lepidoptera: crambidae) has been controlled by cotesia flavipes (hymenoptera: braconidae); however, very little is known about the effect of the parasitism in the host organs, including the midgut. this work aims to verify mitochondrial alteration in the different midgut epithelial cells of d. saccharalis parasitized by c. flavipes. midgut fragments (anterior and posterior region) of both non-parasitized and parasitized larvae were processed for transmis ... | 2010 | 20231974 |
sucrose transporters of higher plants. | recent advances have provided new insights into how sucrose is moved from sites of synthesis to sites of utilisation or storage in sink organs. sucrose transporters play a central role, as they orchestrate sucrose allocation both intracellularly and at the whole plant level. sucrose produced in mesophyll cells of leaves may be effluxed into the apoplasm of mesophyll or phloem parenchyma cells by a mechanism that remains elusive, but experimentally consistent with facilitated transport or energy- ... | 2010 | 20303321 |
pretreatment of siam weed stem by several chemical methods for increasing the enzymatic digestibility. | siam weed [chromolaena odorata (l.) king & robinson], an invasive exotic weed in china, was proposed as a feedstock for bioethanol production. this would be a promising way of using for an invasive weed that needs management and control. it was found that the glucan content of the weed stem was similar to that of sugarcane bagasse, but higher than those of corn stover and wheat straw. several chemical pretreatment methods were applied to the weed stem to increase its enzymatic digestibility. mil ... | 2010 | 20349449 |
effect of different tannery sludge compost amendment rates on growth, biomass accumulation and yield responses of capsicum plants. | composting has been recognized as one of the most cost effective and environmentally sound alternatives for organic wastes recycling from long and composted wastes have a potential to substitute inorganic fertilizers. we investigated the potential of composted tannery sludge for ornamental purposes and to examine the effects of two different composts and concentrations on ornamental capsicum growth. the two composts were produced with tannery sludge and the composition of each compost was: compo ... | 2010 | 20359878 |
detecting sugarcane yellow leaf virus infection in asymptomatic leaves with hyperspectral remote sensing and associated leaf pigment changes. | sugarcane infected with sugarcane yellow leaf virus (scylv) rarely produces visual symptoms until late in the growing season. high-resolution, hyperspectral reflectance data from scylv-infected and non-infected leaves of two cultivars, lcp 85-384 and ho 95-988, were measured and analyzed on 13 july, 12 october, and 4 november 2005. all plants were asymptomatic. infection was determined by reverse transcriptase-polymerase chain reaction (rt-pcr) analysis. results from discriminant analysis showed ... | 2010 | 20362003 |
arthrobacter sp. strain ku001 isolated from a thai soil degrades atrazine in the presence of inorganic nitrogen sources. | an atrazine degrading bacterium, strain ku001, was obtained from a sugarcane field at the cane and sugar research and development center at the kasetsart university, kamphaeng saen campus, thailand. strain ku001 had a rod-to-coccus morphological cycle during growth. biolog carbon source analysis indicated that the isolated bacterium was arthrobacter histidinolovorans. sequence analysis of pcr product indicated the 16s rrna gene in strain ku001 was 99% identical to the same region in arthrobacter ... | 2010 | 20372034 |
rice tillering and yield as affected by artificial and sugarcane borer (lepidoptera: crambidae) culm injury. | a 2-yr study was conducted to evaluate the tillering and yield response of rice, oryza sativa l., whose culms were injured artificially or by larval sugarcane borers, diatraea saccharalis (f.). artificially injured plants produced approximately 0.49 more tillers than uninjured plants, similar to what has previously been reported for larval injured plants. in contrast, artificial injury did not affect yield per tiller, whereas larval injury did. the proximity of larval injury to the panicle had a ... | 2010 | 20388284 |
dna profiling of sugarcane genotypes using randomly amplified polymorphic dna. | dna profiles of 40 sugarcane genotypes were constructed with 30 rapd markers. sugarcane genotypes of both saccharum officinarum and s. barberi were included in this study. multiple alleles were detected from each rapd; there was a high level of polymorphism. on average, 7.93 alleles were produced per primer, giving a total of 238 alleles. the genetic distances between these genotypes were assessed with the popgene dna sequence analysis software. a dendrogram was constructed from these data; cult ... | 2010 | 20391332 |
effect of sugarcane diets and a high fibre commercial diet on fresh meat and dry-cured ham quality in local caribbean pigs. | the effects sugar cane (sc) diets and a milling by product diet on meat quality characteristics of fresh meat and dry-cured ham were studied on a total of 48 creole (cr) pigs. pigs were fed with a control soya-bean meal corn diet (c1), a soya-bean meal wheat diet (c2), a sc fresh juice diet (sc-j), or a ground cane diet (sc-g). average bw gain was 657, 530, 546, and 200g/d for diets c1, c2, sc-j and sc-g, respectively. lean cuts (i.e., ham and loin) were significantly higher in sc-g than in c1 p ... | 2009 | 20416785 |
guillain-barré syndrome following snake bite: an unusual complication. | a 40-year-old man presented with a nonhealing wound on the left ankle for the last 5 weeks, a tingling sensation in both hands for 20 days, and weakness in all four limbs for 10 days. he had been bitten by a snake while working in a sugarcane field 6 weeks earlier and had received tetanus toxoid and anti-snake venom on the day of the bite. he had clinical, biochemical, and electrophysiological features of guillain-barré syndrome, with motor and sensory neuropathy-primarily suggestive of demyelin ... | 2010 | 20436752 |
chemical composition of lipopolysaccharides isolated from various endophytic nitrogen-fixing bacteria of the genus herbaspirillum. | bacteria from the genus herbaspirillum are endophytes responsible for nitrogen fixation in gramineous plants of economic importance such as maize, sugarcane, sorghum, rice, and wheat. some species are known to produce plant growth substances. in contrast, herbaspirillum rubrisubalbicans strains are known to be mild plant pathogens. the molecular communication between the plant and the microbes might involve lipopolysaccharides present in the outer membrane of these gram-negative bacteria. phenol ... | 2010 | 20453901 |
trichoderma harzianum ioc-4038: a promising strain for the production of a cellulolytic complex with significant β-glucosidase activity from sugarcane bagasse cellulignin. | sugarcane bagasse is an agroindustrial residue generated in large amounts in brazil. this biomass can be used for the production of cellulases, aiming at their use in second-generation processes for bioethanol production. therefore, this work reports the ability of a fungal strain, trichoderma harzianum ioc-4038, to produce cellulases on a novel material, xylan free and cellulose rich, generated from sugarcane bagasse, named partially delignified cellulignin. the extract produced by t. harzianum ... | 2010 | 20455032 |
choice of macroinvertebrate metrics to evaluate stream conditions in atlantic forest, brazil. | the development of biomonitoring programs based on the macroinvertebrate community requires the understanding of species distribution patterns, as well as of the responses of the community to anthropogenic stressors. in this study, 49 metrics were tested as potential means of assessing the condition of 29 first- and second-order streams located in areas of differing types of land use in são paulo state, brazil. of the sampled streams, 15 were in well-preserved regions in the atlantic forest, 5 w ... | 2011 | 20461547 |
induction of a gloverin-like antimicrobial polypeptide in the sugarcane borer diatraea saccharalis challenged by septic injury. | diatraea saccharalis (fabricius, 1794) (lepidoptera: crambidae) is an important pest for brazilian sugarcane. in the present study, we detected two distinct spots in hemolymph from septic injured larvae (hds1 and hds2), which are separated by 2de gel electrophoresis. both spots were subjected to in-gel tryptic digestion and maldi-tof/tof analysis, which revealed the sequence vfgtlgsddsglfgk present in both hds1 and hds2. this sequence had homology and 80% identity with specific lepidoptera antim ... | 2010 | 20490430 |
transgenic expression of trehalulose synthase results in high concentrations of the sucrose isomer trehalulose in mature stems of field-grown sugarcane. | sugarcane plants were developed that produce the sucrose isomers trehalulose and isomaltulose through expression of a vacuole-targeted trehalulose synthase modified from the gene in 'pseudomonas mesoacidophila mx-45' and controlled by the maize ubiquitin (ubi-1) promoter. trehalulose concentration in juice increased with internode maturity, reaching about 600 mm, with near-complete conversion of sucrose in the most mature internodes. plants remained vigorous, and trehalulose production in select ... | 2011 | 20492546 |
spatio-temporal variation in malaria transmission intensity in five agro-ecosystems in mvomero district, tanzania. | in africa, malaria is predominantly a rural disease where agriculture forms the backbone of the economy. various agro-ecosystems and crop production systems have an impact on mosquito productivity, and hence malaria transmission intensity. this study was carried out to determine spatial and temporal variations in anopheline mosquito population and malaria transmission intensity in five villages, representing different agro-ecosystems in mvomero district, tanzania, so as to provide baseline infor ... | 2010 | 20503186 |
putative lipoproteins identified by bioinformatic genome analysis of leifsonia xyli ssp. xyli, the causative agent of sugarcane ratoon stunting disease. | summary leifsonia xyli ssp. xyli is the causative agent of ratoon stunting disease, a major cause of economic loss in sugarcane crops. understanding of the biology of this pathogen has been hampered by its fastidious growth characteristics in vitro. however, the recent release of a genome sequence for this organism has allowed significant novel insights. further to this, we have performed a bioinformatic analysis of the lipoproteins encoded in the l. xyli genome. these analyses suggest that lipo ... | 2007 | 20507484 |
alkali-based afex pretreatment for the conversion of sugarcane bagasse and cane leaf residues to ethanol. | sugarcane is one of the major agricultural crops cultivated in tropical climate regions of the world. each tonne of raw cane production is associated with the generation of 130 kg dry weight of bagasse after juice extraction and 250 kg dry weight of cane leaf residue postharvest. the annual world production of sugarcane is approximately 1.6 billion tones, generating 279 mmt tones of biomass residues (bagasse and cane leaf matter) that would be available for cellulosic ethanol production. here, w ... | 2010 | 20521302 |
cancer risk assessment of ethyl carbamate in alcoholic beverages from brazil with special consideration to the spirits cachaça and tiquira. | ethyl carbamate (ec) is a multi-site carcinogen in experimental animals and probably carcinogenic to humans (iarc group 2a). traces of ec below health-relevant ranges naturally occur in several fermented foods and beverages, while higher concentrations above 1 mg/l are regularly detected in only certain spirits derived from cyanogenic plants. in brazil this concerns the sugarcane spirit cachaça and the manioc (cassava) spirit tiquira, which both regularly exceed the national ec limit of 0.15 mg/ ... | 2010 | 20529350 |
genetic variability of mahanarva sp (hemiptera: cercopidae) collected from different sites in brazil. | spittlebugs are the leading cause of damage to tall grasses. annual losses are estimated to reach 2.1 billion dollars in sugarcane crops and grazing land throughout the world. correct identification of these species is difficult due to similarities in color, body size and male genitalia. molecular markers have been useful in the identification and assessment of genetic diversity of many species. we investigated the genetic diversity of the spittlebug species mahanarva fimbriolata, m. spectabilis ... | 2010 | 20533195 |
genetic studies of "noble cane" for identification and exploitation of genetic markers. | forty genotypes (clones) of sugarcane, including elite lines, commercial cultivars of saccharum officinarum and clones of s. barberi were fingerprinted with 50 ssr markers using a pcr-based marker assay. nei's genetic distances for ssr data were determined and relationships between accessions were portrayed graphically in the form of a dendrogram. genetic distance values ranging from 0.60 to 1.11 were observed among the 40 sugarcane accessions. the shortest genetic distance of 0.60 was seen betw ... | 2010 | 20533196 |