Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| in vitro cultured primary roots derived from stem segments of cassava (manihot esculenta) can behave like storage organs. | cassava (manihot esculenta) has three adventitious root types: primary and secondary fibrous roots, and storage roots. different adventitious root types can also regenerate from in vitro cultured segments. the aim of this study was to investigate aspects of in vitro production of storage roots. | 2007 | 17267513 |
| beta-carotene from cassava (manihot esculenta crantz) leaves improves vitamin a status in rats. | the bioavailability of beta-carotene from cassava (manihot esculenta crantz) leaves was assayed in vitamin a deficient wistar rats (rattus norvegicus). rats were separated into three groups and fed with a modified ain-93g--vitamin a deficient--diet. deficient rat received this diet without any additional vitamin a source. controls received the diet with 7200 microg of synthetic beta-carotene (control), while experimentals (test) received 19.5 g of cassava leaves powder per kg of diet. the cassav ... | 2007 | 17261381 |
| holocene fire and occupation in amazonia: records from two lake districts. | while large-scale pre-columbian human occupation and ecological disturbance have been demonstrated close to major amazonian waterways, less is known of sites in terra firme settings. palaeoecological analyses of two lake districts in central and western amazonia reveal long histories of occupation and land use. at both locations, human activity was centred on one of the lakes, while the others were either lightly used or unused. these analyses indicate that the scale of human impacts in these te ... | 2007 | 17255030 |
| tropical whitefly ipm project. | the tropical whitefly ipm project (twfp) is an initiative of the systemwide ipm programme of the consultative group on international agricultural research (cgiar), financed by the department for international development (dfid) of the united kingdom, the danish international development agency (danida), the united states department of agriculture (usda) and agency for international development (usaid), the australian centre for international agricultural research (aciar), and the new zealand age ... | 2007 | 17222696 |
| linamarase activities in bacillus spp. responsible for thermophilic aerobic digestion of agricultural wastes for animal nutrition. | thermophilic bacillus spp. isolated from thermophilic aerobic digestion (tad) of model agricultural slurry were screened for ability to secret linamarase activity and degrade linamarin, a cyanogenic glycoside toxin abundant in cassava. screening was performed by both linamarin - picrate assay and by p-nitrophenyl beta-d-glucoside (pnpg) degradation, and results of both assays were related. linamarase positive isolates were identified as bacillus coagulans, bacillus licheniformis and bacillus ste ... | 2007 | 17207614 |
| characterisation and biochemical properties of predominant lactic acid bacteria from fermenting cassava for selection as starter cultures. | a total of 375 lactic acid bacteria were isolated from fermenting cassava in south africa, benin, kenya and germany, and were characterised by phenotypic and genotypic tests. these could be divided into five main groups comprising strains of facultatively heterofermentative rods, obligately heterofermentative rods, heterofermentative cocci, homofermentative cocci and obligately homofermentative rods, in decreasing order of predominance. most of the facultatively heterofermentative rods were iden ... | 2007 | 17188771 |
| survival and growth of foodborne pathogens during cooking and storage of oriental-style rice cakes. | fresh cooked rice cakes for retail sale are typically held at room temperature because refrigeration dramatically reduces their quality. room temperature, high water activity, and a ph of > 4.6 provided an environment conducive to pathogen growth. to date, no studies have been published regarding survival and growth of foodborne pathogens in fresh cooked rice cakes. this study was undertaken to investigate the effect of steam cooking on foodborne pathogens and their subsequent growth in five var ... | 2006 | 17186677 |
| molecular monitoring of microbial population dynamics during operational periods of anaerobic hybrid reactor treating cassava starch wastewater. | this study characterized the microbial community and population dynamics in an anaerobic hybrid reactor (ahr) treating cassava starch wastewater. methanogens and nonmethanogens were followed during the start-up and operation of the reactor, and linked to operational and performance data. biomass samples taken from the sludge bed and packed bed zones of the ahr at intervals throughout the operational period were examined by 16s rrna fluorescence in situ hybridization (fish). the start-up seed and ... | 2007 | 17186142 |
| genetic modification of cassava for enhanced starch production. | to date, transgenic approaches to biofortify subsistence crops have been rather limited. this is particularly true for the starchy root crop cassava (manihot esculenta crantz). cassava has one of the highest rates of co(2) fixation and sucrose synthesis for any c3 plant, but rarely reaches its yield potentials in the field. it was our hypothesis that starch production in cassava tuberous roots could be increased substantially by increasing the sink strength for carbohydrate. to test this hypothe ... | 2006 | 17177810 |
| cyclodextrin production by cyclodextrin glycosyltransferase from bacillus circulans df 9r. | cyclodextrins (cd) are cyclic oligosaccharides with multiple applications in the food, pharmaceutical, cosmetic, agricultural and chemical industries. in this work, the conditions used to produce cd with cyclodextrin glycosyltransferase from bacillus circulans df 9r were optimized using experimental designs. the developed method allowed the partial purification and concentration of the enzyme from the cultural broth and, subsequently, the cd production, using the same cassava starch as enzyme ad ... | 2007 | 17174549 |
| biodegradation of atrazine in transgenic plants expressing a modified bacterial atrazine chlorohydrolase (atza) gene. | atrazine is one of the most widely used herbicides in the usa. atrazine chlorohydrolase (atza), the first enzyme in a six-step pathway leading to the mineralization of atrazine in gram-negative soil bacteria, catalyses the hydrolytic dechlorination and detoxification of atrazine to hydroxyatrazine. in this study, we investigated the potential use of transgenic plants expressing atza to take up, dechlorinate and detoxify atrazine. alfalfa, arabidopsis thaliana and tobacco were transformed with a ... | 2005 | 17173634 |
| resistance to cassava mosaic disease in transgenic cassava expressing antisense rnas targeting virus replication genes. | african cassava mosaic virus (acmv) is a major contributor to cassava mosaic disease (cmd), the economically most important and devastating disease of cassava in africa. we have developed transgenic cassava plants with increased acmv resistance using improved antisense rna technology by targeting the viral mrnas of rep (ac1), trap (ac2) and ren (ac3). viral dna replication assays in detached leaves demonstrated that replication of two acmv isolates was strongly reduced or inhibited in most trans ... | 2005 | 17173627 |
| over-expression of hydroxynitrile lyase in transgenic cassava roots accelerates cyanogenesis and food detoxification. | cassava (manihot esculenta, crantz) roots are the primary source of calories for more than 500 million people, the majority of whom live in the developing countries of africa. cassava leaves and roots contain potentially toxic levels of cyanogenic glycosides. consumption of residual cyanogens (linamarin or acetone cyanohydrin) in incompletely processed cassava roots can cause cyanide poisoning. hydroxynitrile lyase (hnl), which catalyses the conversion of acetone cyanohydrin to cyanide, is expre ... | 2004 | 17166141 |
| reduction of starch granule size by expression of an engineered tandem starch-binding domain in potato plants. | granule size is an important parameter when using starch in industrial applications. an artificial tandem repeat of a family 20 starch-binding domain (sbd2) was engineered by two copies of the sbd derived from bacillus circulans cyclodextrin glycosyltransferase via the pro-thr-rich linker peptide from xyn10a from cellulomonas fimi. sbd2 and a single sbd were introduced into the amylose-free potato mutant, amf, using appropriate signal sequences. the accumulation of sbd2 into transgenic starch gr ... | 2004 | 17147616 |
| the use of rocks to improve family agriculture in brazil. | during the second half of the 20th century, the introduction of new chemical agriculture technologies brought about a revolution in food production, but this has also cause deep deterioration in our relationships with the natural environment. in developing tropical countries, record yields were accompanied by rural exodus, widespread deforestation and loss of topsoil. the stonemeal research described herein is an alternative to such practices as it is an environmental friendly and socially respo ... | 2006 | 17143408 |
| the oligomeric rep protein of mungbean yellow mosaic india virus (mymiv) is a likely replicative helicase. | geminiviruses replicate by rolling circle mode of replication (rcr) and the viral rep protein initiates rcr by the site-specific nicking at a conserved nonamer (taatatt downward arrow ac) sequence. the mechanism of subsequent steps of the replication process, e.g. helicase activity to drive fork-elongation, etc. has largely remained obscure. here we show that rep of a geminivirus, namely, mungbean yellow mosaic india virus (mymiv), acts as a replicative helicase. the rep-helicase, requiring > or ... | 2006 | 17142233 |
| determination of the maximum water solubility of eight native starches and the solubility of their acidic-methanol and -ethanol modified analogues. | the maximum water solubilities of eight native starches from potato, shoti, tapioca, maize, waxy maize, amylomaize-7, wheat, and rice and their acid-methanol and acid-ethanol modified analogues have been determined. maximum solubilities of 18.7 and 17.4 mg/ml were obtained for waxy maize and tapioca and 12.4 mg/ml for potato and maize starches by autoclaving 220 mg/10 ml at 121 degrees c; 8.7 mg/ml was obtained for shoti starch by stirring in 85:15 (v/v) me(2)so-h(2)o at 20 degrees c; and 7.0 an ... | 2007 | 17112491 |
| deletion and recombination events between the dna-a and dna-b components of indian cassava-infecting geminiviruses generate defective molecules in nicotiana benthamiana. | cloned dna-b components, belonging to the bipartite begomoviruses indian cassava mosaic virus (icmv) and sri lankan cassava mosaic virus (slcmv), family geminiviridae, when co-inoculated along with previously cloned dna-a components of the respective viruses onto the experimental host nicotiana benthamiana, generated defective dnas (def-dna) ranging in size from 549 to 1555 nucleotides. all the cloned def-dnas contained the common region (cr) as well as portions of either dna-a or dna-b and, in ... | 2007 | 17109983 |
| cassava-enriched diet is not diabetogenic rather it aggravates diabetes in rats. | chronic intake of cassava has been thought to play a role in the pathogenesis of diabetes. we investigated the effects of dietary cassava (manihot esculenta), which naturally contains cyanogenic glycosides, in the progression of diabetes mellitus in rats. diabetes was induced by five mild doses of streptozotocin, in male wistar rats which were fed a standard or cyanide-free cassava (cfc) diet containing or not containing exogenous cyanide with or without methionine. methionine was employed to co ... | 2006 | 17109651 |
| tissue and cell tropism of indian cassava mosaic virus (icmv) and its av2 (precoat) gene product. | in order to establish defined viruses for challenging plants in resistance breeding programmes, indian cassava mosaic virus (icmv; family geminiviridae) dna clones were modified to monitor viral spread in plants by replacing the coat protein gene with the green fluorescent protein (gfp) reporter gene. comparative in situ hybridization experiments showed that icmv was restricted to the phloem in cassava and tobacco. gfp-tagged virus spread similarly, resulting in homogeneous fluorescence within n ... | 2007 | 17049959 |
| removal of potassium from tuberous root vegetables by leaching. | to determine analytically the amount of potassium in raw tuberous root vegetables (trv); to estimate the amount of potassium that can be leached from raw trv by soaking in water; and to determine whether the duration of soaking and the cooking method selected affect potassium extraction. | 2006 | 17046614 |
| protein-energy supplements to preserve nutritional status of sugar cane cutters. | sugar cane cutters in south-eastern brazil are temporarily hired for the harvest period of 8 months. they often have minimal benefits and may not receive adequate nutrition. | 2006 | 17043088 |
| digestibility of resistant starch containing preparations using two in vitro models. | resistant starch (rs) is known for potential health benefits in the human colon. to investigate these positive effects it is important to be able to predict the amount, and the structure of starch reaching the large intestine. | 2006 | 17036261 |
| cassava (manihot esculenta crantz). | during the last three years the generation of stably transformed cassava plants having value-added traits has become a reality. currently, two agrobacterium-mediated transformation systems are routinely used to engineer cassava. these systems use either somatic embryos or friable embryogenic calli. this paper presents detailed protocols for the transformation of cassava using primary somatic embryos. the effects of explant types, tissue culture conditions, and bacterial and plasmid related facto ... | 2006 | 17033047 |
| cassava mosaic virus disease in east and central africa: epidemiology and management of a regional pandemic. | 2006 | 17027685 | |
| bemnisia tabaci feeding induces pathogenesis-related proteins in cassava (manihot esculenta crantz). | cassava (manihot esculenta cranzts) plants fed upon by whitefly bemisia tabaci showed increased levels of pathogenesis-related (pr) proteins, such as beta-1, 3-glucanase, peroxidase and chitinase activities, as compared to uninfested plants. the enzymes increased in specific activities from 2 to 7 fold and protein content in leaf extracts decreased in whitefly-infested plants, compared to uninfested plants. among the three pr proteins, b. tabaci feeding induced significantly higher beta-1, 3-glu ... | 2006 | 16967908 |
| genetic diversity and phylogeography of cassava mosaic viruses in kenya. | cassava is a major factor in food security across sub-saharan africa. however, the crop is susceptible to losses due to biotic stresses, in particular to viruses of the genus begomovirus (family geminiviridae) that cause cassava mosaic disease (cmd). during the 1990s, an epidemic of cmd severely hindered cassava production across eastern and central africa. a significant influence on the appearance of virus epidemics is virus diversity. here, a survey of the genetic diversity of cmd-associated b ... | 2006 | 16963765 |
| simultaneous saccharification and fermentation of cassava bagasse for l-(+)-lactic acid production using lactobacilli. | saccharification and fermentation of cassava (manihot esculenta) bagasse was carried out in a single step for the production of l-(+)-lactic acid by lactobacillus casei and lactobacillus delbrueckii. using 15.5% w/v of cassava bagasse as the raw material, a maximum starch to lactic acid conversion of 96% was obtained with l. casei with a productivity rate of 1.40 mg/mlxh and maximum yield of 83.8 mg/ml. it was 94% with l. delbrueckii with a productivity rate of 1.36 mg/mlxh and maximum yield of ... | 2006 | 16960284 |
| production of insoluble exopolysaccharide of agrobacterium sp. (atcc 31749 and ifo 13140). | agrobacterium isolated from soil samples produced two extracellular polysaccharides: succinoglycan, an acidic soluble polymer, and curdlan gum, a neutral, insoluble polymer. maize glucose, cassava glucose, and maize maltose were used in fermentation medium to produce insoluble polysaccharide. two agrobacterium sp. strains which were used (atcc 31749 and ifo 13140) in the production of insoluble exopolysaccharide presented equal or superior yields compared to the literature. the strain atcc 31749 ... | 2006 | 16915694 |
| evaluation of solid and submerged fermentations for the production of cyclodextrin glycosyltransferase by paenibacillus campinasensis h69-3 and characterization of crude enzyme. | cyclodextrin glycosyltransferase (cgtase) is an enzyme that produces cyclodextrins from starch by an intramolecular transglycosylation reaction. cyclodextrins have been shown to have a number of applications in the food, cosmetic, pharmaceutical, and chemical industries. in the current study, the production of cgtase by paenibacillus campinasensis strain h69-3 was examined in submerged and solid-state fermentations. p. campinasensis strain h69-3 was isolated from the soil, which grows at 45 degr ... | 2006 | 16915643 |
| development of suspending agent from sodium carboxymethyl mungbean starches. | three sodium carboxymethyl mungbean starches (scmmss) were selected, based on the physicochemical profiles and evaluated as potential pharmaceutical suspending agent in comparison with a sodium carboxymethyl tapioca starch and other five commercial suspending agents. ibuprofen suspension was employed as a model formulation with 0.5, 1.0, and 2.0% w/v of suspending agents. evaluation parameters included the determination of sedimentation volume ratio, redispersibility, viscosity and rheological p ... | 2006 | 16908418 |
| cancer and non-cancer health risk from eating cassava grown in some mining communities in ghana. | food crops such as cassava, cocoyam and other tuber crops grown in mining communities uptake toxic or hazardous chemicals such as arsenic, and cadmium, from the soil. cassava is a stable food for ghanaians. this study evaluated human health risk from eating cassava grown in some mining communities in ghana such as bogoso, prestea, tarkwa and tamso, which are important mining towns in the western region of ghana. the study evaluated cancer and non-cancer health effects from eating cassava grown i ... | 2006 | 16897532 |
| isolation of lactic acid bacteria from malaysian foods and assessment of the isolates for industrial potential. | two traditional fermented food 'tapai' (fermented tapioca) and 'tempoyak' (fermented durian flesh), chilli puree and fresh goat's milk were used as sources for the isolation of lactic acid bacteria (lab). a total of 126 isolates were obtained and by sequential screening for catalase activity and gram-staining, 55 were determined to be lab out of which 16 were established to be homofermentative by the gel plug test. seven isolates were identified by use of the api 50chl kit and two lactobacilli s ... | 2007 | 16872826 |
| the use of biolistic inoculation of cassava mosaic begomoviruses in screening cassava for resistance to cassava mosaic disease. | inoculation of cassava with infectious clones of cassava mosaic geminiviruses (geminiviridae: begomovirus) and total dna extracts from plants infected with well-characterised viruses was evaluated using the bio-rad helios gene gun system. total dna extracts from infected plants and cloned viruses were produced for coating gold particles and bombardment onto new cassava genotypes, 96/1089a, 96/1039, 96/0160, 96/0304 and three local landraces tme 117, tme 3 and tme 4. cloned dna of a kenyan isolat ... | 2006 | 16839615 |
| the unitarian hypothesis for the aetiology of diabetes mellitus. | over the years, several clinical syndromes have been described in diabetes mellitus. although world opinion has settled somewhat on the main two types, the debate continues as to how the 'formes frustes' syndromes fit in and what if any implications there are for the accepted aetiology of the disease. type 1, insulin dependent diabetes mellitus, results from pancreatic inadequacy as a result of a variety of insults such as autoimmune attack, toxic damage, etc. insulin administration is at the co ... | 2006 | 16806731 |
| retrograded tapioca starch prevents ovarian hormone deficiency-induced hypercholesterolemia. | the purpose of this study was to examine whether retrograded tapioca starch (rs3-tapioca) prevents ovarian hormone deficiency-induced hypercholesterolemia. six-month-old wistar female rats were subjected to sham-operation or ovariectomy, and fed a cholesterol-free purified diet with or without rs3-tapioca (150 g/kg diet) instead of digestible cornstarch for 28 d. body weight gain and food intake increased in ovariectomized rats (ovx-rats). plasma total cholesterol concentration was lowered by rs ... | 2006 | 16802694 |
| lipid microencapsulation in starch. | short microwave heating of granular potato, waxy corn and tapioca starches with such lipids as cis-9-octadecenoic acid (oleic acid), cis,cis-9,12-octadecadienoic acid (linoleic acid), octadecanoic acid (stearic acid), ethyl cis-9-octadecenoate, ethyl cis,cis-9,12-octadecadienoate and methyl octadecanoate provided microcapsules in which encapsulated guest molecules did not interact with starch microcapsules. on the formation of microcapsules, the lipid guest molecules did not react to starches. t ... | 2006 | 16801245 |
| molecular ecology and emergence of tropical plant viruses. | an appreciation of the risks caused by emergent plant viruses is critical in tropical areas that rely heavily on agriculture for subsistence and rural livelihood. molecular ecology, within 10 years, has unraveled the factors responsible for the emergence of several of the economically most important tropical plant viruses: rice yellow mottle virus (rymv), cassava mosaic geminiviruses (cmgs), maize streak virus (msv), and banana streak virus (bsv). a large range of mechanisms--most unsuspected un ... | 2006 | 16784403 |
| enzymatic modification of cassava starch by bacterial lipase. | enzymatic modification of starch using long chain fatty acid makes it thermoplastic suitable for a myriad of industrial applications. an industrial lipase preparation produced by burkholderia cepacia (lipase ps) was used for modification of cassava starch with two acyl donors, lauric acid and palmitic acid. reactions performed with palmitic acid by liquid-state and microwave esterification gave a degree of substitution (ds) of 62.08% (ds 1.45) and 42.06% (ds 0.98), respectively. thermogravimetri ... | 2006 | 16736230 |
| altering glucosinolate profiles modulates disease resistance in plants. | plant diseases are major contributing factors for crop loss in agriculture. here, we show that arabidopsis plants with high levels of novel glucosinolates (gss) as a result of the introduction of single cyp79 genes exhibit altered disease resistance. arabidopsis expressing cyp79d2 from cassava accumulated aliphatic isopropyl and methylpropyl gs, and showed enhanced resistance against the bacterial soft-rot pathogen erwinia carotovora, whereas arabidopsis expressing the sorghum cyp79a1 or over-ex ... | 2006 | 16709192 |
| digestibility and digestive organ development in indigenous and improved chickens and ducks fed diets with increasing inclusion levels of cassava leaf meal. | growing indigenous cambodian chickens and ducks, and broiler chickens and white pekin ducks were fed diets containing 0%, 7%, 14% and 20% of cassava leaf meal (clm) to study the effects of clm level on diet digestibility and gastrointestinal tract (git) and organ development. the coefficient of total tract apparent digestibility (cttad) of dry matter (dm) and intake of digestible dm decreased with increased dietary clm. dm and digestible dm intake was higher for local breeds than for the corresp ... | 2006 | 16684144 |
| biofortification of essential nutritional compounds and trace elements in rice and cassava. | plant biotechnology can make important contributions to food security and nutritional improvement. for example, the development of 'golden rice' by professor ingo potrykus was a milestone in the application of gene technology to deliver both increased nutritional qualities and health improvement to wide sections of the human population. mineral nutrient and protein deficiency as well as food security remain the most important challenges for developing countries. current projects are addressing t ... | 2006 | 16672076 |
| isoelectric focusing of cassava protoplasts. | cassava (manihot esculenta crantz) protoplast was analyzed by using isoelectric focusing techniques. two populations, representing 68 and 32% of the total sample, with mean isoelectric points of 4.48 and 4.60, were obtained using mesophyll protoplasts. the use of this technique allows demonstration of a discontinuous distribution of protoplast isoelectric point from one species according to their surface potential. | 1991 | 16667975 |
| purification, characterization, and localization of linamarase in cassava. | we have purified cassava (manihot esculenta) linamarase to apparent homogeneity using a simplified extraction procedure using low ph phosphate buffer. three isozymes of cassava linamarase were identified in leaves based on differences in isoelectric point. the enzyme is capable of hydrolyzing a number of beta-glycosides in addition to linamarin. the enzyme is unusually stable and has a temperature optimum of 55 degrees c. immunogold labeling studies indicate that linamarase is localized in the c ... | 1990 | 16667431 |
| changes of cyanide content and linamarase activity in wounded cassava roots. | when cassava (manihot esculenta crantz) root was cut into blocks and incubated under laboratory conditions, the blocks showed more widespread and more even symptoms of physiological deterioration than those under natural conditions. thus, the tissue block system has potential for biochemical studies of natural deterioration of cassava root. the changes in cyanide content and linamarase (linamarin beta-d-glucoside glucohydrolase; ec 3.2.1.21) activity in various tissues during physiological deter ... | 1983 | 16662957 |
| diurnal variations in some enzymes of carbohydrate metabolism in tapioca leaves. | 1962 | 16655645 | |
| studies on the mineral nutrition of cassava (manihot utilissima pohl.). | 1955 | 16654734 | |
| isolation and characterization of neutral lipids of desilked eri silkworm pupae grown on castor and tapioca leaves. | the neutral lipid of desilked eri silkworm pupae (samia cynthia ricini) grown on two different host plants, castor (ricinus communis linn.) and tapioca (manihot utilizsima phol.) leaves, was extracted with hexane. the oil content in pupae was estimated to be in the range of 18-20% (dry basis). the pupal oil was found to be enriched with alpha-linolenic acid (ala) with palmitic acid as the second major fatty acid. the level of ala in the oil of silkworm pupae was found to be significantly higher ... | 2006 | 16637689 |
| utilization of shrimp industry waste in the formulation of tilapia (oreochromis niloticus linnaeus) feed. | a rapid expansion of fisheries is demanding an adequate supply of efficient, nutritious and inexpensive fish feed, because feed contributes highly to the cost of fish production. shrimp head, a waste product from the shrimp export industry qualifies as an economical, abundant and good quality protein source for fish feeds. in the present work, shrimp head silage powder, which contained approximately 40% protein, was used as a substitute for fish flour. four feeds, in the form of pellets, were pr ... | 2007 | 16624557 |
| bioreduction of aldehydes and ketones using manihot species. | biocatalysis constitutes an important tool in organic synthesis, especially for the preparation of chiral molecules of biological interest. a series of aliphatic and aromatic aldehydes and two ketones were reduced using plant cell preparations from manihot esculenta and manihot dulcis roots. the reduced products were typically obtained in excellent yields (80-96%), and with excellent enantiomeric excess (94-98%), except for vanillin. esters, a nitrile, and an amide were also examined, but were n ... | 2006 | 16603212 |
| nucleotide sequence of bean golden mosaic virus and a model for gene regulation in geminiviruses. | we have sequenced the genome of bean golden mosaic virus, which comprises two circular single-stranded dna molecules (2646 and 2587 nucleotides long) of mostly unique sequence. comparison of the sequences of bean golden mosaic virus and of cassava latent virus, which share serological relationship but are very different in host range and geographical origin, shows that each virus has a unique 200-nucleotide sequence (common region) on each 2.6-kilobase molecule of its genome. the common regions ... | 1985 | 16593562 |
| ethanol fermentation of mahula (madhuca latifolia l.) flowers using free and immobilized yeast saccharomyces cerevisiae. | there is a growing interest to find alternate bioresources for production of ethanol, apart from cane/sugar beet molasses and starchy crops like sweet sorghum, cassava and sweet potato. mahula (madhuca latifolia l.) is a forest tree abundantly available in the indian subcontinent and its flowers are very rich in fermentable sugars (28.1-36.3 g 100 g(-1)). batch fermentation of fresh and 12-month-stored flowers with free (whole cells) and immobilized cells of saccharomyces cerevisiae (strain ctcr ... | 2007 | 16580830 |
| monascus fermentation of dioscorea for increasing the production of cholesterol-lowering agent--monacolin k and antiinflammation agent--monascin. | monacolin k, an inhibitor for cholesterol synthesis, is the secondary metabolite of monascus species. the formation of the secondary metabolites of the monascus species is affected by cultivation environment and method. this research uses sweet potato (ipomoea batatas), potato (solanum tuberosum), casava (manihot esculenta), and dioscorea (dioscorea batatas) as the substrates and discusses the best substrate to produce monacolin k. the results show that monascus purpureus ntu 301, with dioscorea ... | 2006 | 16568313 |
| radioecological characterization of a uranium mining site located in a semi-arid region in brazil. | the work presents the radioecological characterization of the new brazilian uranium mining and milling site located in a semi-arid region of the country. the process characterization demonstrated that in heap leach plants most of the 226ra remains in the leached ore. despite the potential higher availability of radium isotopes in the soils of the studied region the lack of precipitation in that area reduces the leaching/mobilization of the radionuclides. high 226ra and 228ra concentrations were ... | 2006 | 16545512 |
| geographical differentiation of the population of xanthomonas axonopodis pv. manihotis in colombia. | analyses of dna polymorphism and virulence variation were used to evaluate the population structure of xanthomonas axonopodis pv. manihotis, the pathogen causing cassava bacterial blight in colombia. we collected strains from the major cassava-growing regions which can be grouped into different edaphoclimatic zones (eczs) according to environmental conditions, production constraints, and economic parameters. dna polymorphism was assessed by a restriction fragment length polymorphism analysis, us ... | 1997 | 16535731 |
| microbiological and biochemical characterization of cassava retting, a traditional lactic acid fermentation for foo-foo (cassava flour) production. | the overall kinetics of retting, a spontaneous fermentation of cassava roots performed in central africa, was investigated in terms of microbial-population evolution and biochemical and physicochemical parameters. during the traditional process, endogenous cyanogens were almost totally degraded, plant cell walls were lysed by the simultaneous action of pectin methylesterase and pectate lyase, and organic acids (c(inf2) to c(inf4)) were produced. most microorganisms identified were found to be fa ... | 1996 | 16535378 |
| genetic diversity among xanthomonas campestris strains pathogenic for small grains. | a collection of 51 xanthomonas campestris strains from throughout the world was studied to detect and assess genetic diversity among pathogens of small grains. isolates from barley, bread wheat, bromegrass, canary grass, cassava, maize, orchard grass, rice, rough-stalked meadow grass, rye, timothy, and triticale were analyzed by pathogenicity tests on bread wheat cv. alondra and barley cv. corona, indirect immunofluorescence, and restriction fragment length polymorphism (rflp). three probes were ... | 1995 | 16534952 |
| a health evaluation in a colony of captive collared peccaries (tayassu tajacu) in the eastern amazon. | this study pretends to determine baseline data on the health and mortality of a colony of captive collared peccaries in the eastern amazon (belém, state of pará, brazil) during a 65-months survey. thirty-nine out of 166 animals (23.5%) died and were examined post-mortem. monthly mortality averaged 1.2%. the highest mortality rate was observed in newborns (74.4%). abandonment by the mother and aggression were responsible for 24.1% and 13.8% of the total newborn deaths, respectively. most frequent ... | 2006 | 16487552 |
| breeding cassava for apomixis. | apomixis genes have been successfully transferred to cassava (manihot esculenta) by hybridizing it with the wild species, m. glaziovii. the interspecific hybrid of cassava and m. glaziovii was exposed to open pollination during three subsequent generations. seven sibs and the maternal progenitor of the fourth generation were genotyped using five microsatellite loci previously developed for cassava. all sibs were identical with each other and with their maternal progenitor. sibs from m. glaziovii ... | 2005 | 16475116 |
| production of l-lactic acid from fresh cassava roots slurried with tofu liquid waste by streptococcus bovis. | to reduce the production cost of biodegradable plastics, the fermentation performance of l-lactic acid for a new fermentation medium, fresh cassava roots (fcrs) as a substrate slurried with tofu liquid waste (tlw) as basal medium, was investigated by batch fermentation of streptococcus bovis. the fermentation properties of the three substrates, namely, fcr, tapioca (cassava starch) and glucose, which were independently mixed with tlw, were compared with those independently mixed with the standar ... | 2005 | 16473768 |
| expression of a bacterial gene in plants mediated by infectious geminivirus dna. | a viable coat protein deletion mutant of cassava latent virus (clv) dna 1 has been isolated, suggesting that this geminivirus might be exploited as a gene replacement vector. an extensive deletion of 727 nucleotides within the coat protein gene renders dna 1 non-infectious. chimeric clones have been constructed in which the deleted coat protein open reading frame has been replaced by the coding region of the bacterial chloramphenicol acetyl transferase (cat) gene. infectivity is restored to dna ... | 1988 | 16453850 |
| complete nucleotide sequence of the infectious cloned dna components of tomato golden mosaic virus: potential coding regions and regulatory sequences. | the nucleotide sequences of the infectious cloned dna components of tomato golden mosaic virus (tgmv) have been determined. dna a (2588 nucleotides) and dna b (2508 nucleotides) have little sequence homology except for a region of 200 bases which is almost identical in the two molecules. analysis of open reading frames revealed six potential coding regions for proteins of mol. wt. >10 000, four in dna a and two in dna b. possible regulatory signals are identified and a model for bidirectional tr ... | 1984 | 16453557 |
| therapeutic protein transduction of mammalian cells and mice by nucleic acid-free lentiviral nanoparticles. | the straightforward production and dose-controlled administration of protein therapeutics remain major challenges for the biopharmaceutical manufacturing and gene therapy communities. transgenes linked to hiv-1-derived vpr and pol-based protease cleavage (pc) sequences were co-produced as chimeric fusion proteins in a lentivirus production setting, encapsidated and processed to fusion peptide-free native protein in pseudotyped lentivirions for intracellular delivery and therapeutic action in tar ... | 2006 | 16449199 |
| rnai dependent epigenetic marks on a geminivirus promoter. | nicotiana benthamiana plants were stably transformed with an intron-spliced dsrna producing construct cognate to bidirectional promoter of african cassava mosaic geminivirus (acmv) dna a. transgenic lines expressed multiple sirnas species upon acmv infection. the de novo dna methylation and an increased proportion of histone h3 lysine-9 methylation (h3k9) at intergenic region (igr) of acmv dna a were observed. | 2006 | 16445863 |
| the cassava (manihot esculenta crantz) root proteome: protein identification and differential expression. | using high-resolution 2-de, we resolved proteins extracted from fibrous and tuberous root tissues of 3-month-old cassava plants. gel image analysis revealed an average of 1467 electrophoretically resolved spots on the fibrous gels and 1595 spots on the tuberous gels in ph 3-10 range. protein spots from both sets of gels were digested with trypsin. the digests were subjected to nanoelectrospray quadrupole tof tandem mass analysis. currently, we have obtained 299 protein identifications for 292 ge ... | 2006 | 16421938 |
| molecular characterization of geminivirus-derived small rnas in different plant species. | dna geminiviruses are thought to be targets of rna silencing. here, we characterize small interfering (si) rnas-the hallmarks of silencing-associated with cabbage leaf curl begomovirus in arabidopsis and african cassava mosaic begomovirus in nicotiana benthamiana and cassava. we detected 21, 22 and 24 nt sirnas of both polarities, derived from both the coding and the intergenic regions of these geminiviruses. genetic evidence showed that all the 24 nt and a substantial fraction of the 22 nt vira ... | 2006 | 16421273 |
| production of saccharogenic and dextrinogenic amylases by rhizomucor pusillus a 13.36. | a newly-isolated thermophilic strain of the zygomycete fungus rhizomucor pusillus 13.36 produced highly active dextrinogenic and saccharogenic enzymes. cassava pulp was a good alternative substrate for amylase production. dextrinogenic and saccharogenic amylases exhibited optimum activities at a ph of 4.0-4.5 and 5.0 respectively and at a temperature of 75 degrees c. the enzymes were highly thermostable, with no detectable loss of saccharogenic or dextrinogenic activity after 1 h and 6 h at 60 d ... | 2005 | 16410774 |
| size asymmetry in intraspecific competition and the density-dependence of inbreeding depression in a natural plant population: a case study in cassava (manihot esculenta crantz, euphorbiaceae). | the effects of competition on the genetic composition of natural populations are not well understood. we combined demography and molecular genetics to study how intraspecific competition affects microevolution in cohorts of volunteer plants of cassava (manihot esculenta) originating from seeds in slash-and-burn fields of palikur amerindians in french guiana. in this clonally propagated crop, genotypic diversity is enhanced by the incorporation of volunteer plants into farmers' stocks of clonal p ... | 2006 | 16405580 |
| pesticides and metabolites in cassava, eucalyptus, plum and cashew leaves and roots in relation to a point source in kibaha, tanzania. | leaves of eucalyptus sp., prunus domestica (plum), and anacardium occidentale (cashew), as well as roots and leaves of manihot esculenta (cassava) were used to study the local distribution of pesticides and metabolites from a point source, an old storage site at vikuge farm in tanzania. the gpc-cleaned extracts were analyzed by gc-ecd and gc/ms. eleven organochlorine pesticide residues namely pentachloroanisole, p,p'-ddt, o,p'-ddt, p,p'-dde, o,p'-dde, p,p'-ddd, o,p'-ddd, alpha-hch, beta-hch, del ... | 2006 | 16403548 |
| biosafety considerations for selectable and scorable markers used in cassava (manihot esculenta crantz) biotechnology. | cassava is an important subsistence crop grown only in the tropics, and represents a major source of calories for many people in developing countries. improvements in the areas of resistance to insects and viral diseases, enhanced nutritional qualities, reduced cyanogenic content and modified starch characteristics are urgently needed. traditional breeding is hampered by the nature of the crop, which has a high degree of heterozygosity, irregular flowering, and poor seed set. biotechnology has t ... | 2006 | 16402664 |
| parakari, an indigenous fermented beverage using amylolytic rhizopus in guyana. | the alcoholic beverage parakari is a product of cassava (manihot esculenta crantz) fermentation by amerindians of guyana. while fermented beverage production is nearly universal among indigenous amazonians, parakari is unique among new world beverages because it involves the use of an amylolytic mold (rhizopus sp., mucoraceae, zygomycota) followed by a solid substratum ethanol fermentation. the mycological significance of this dual fermentation process previously was unrecognized. a detailed stu ... | 2013 | 16389951 |
| [utilization of glucose and long-chain fatty acids in lactating dairy cows fed a fat-enriched diet]. | the fate of carbon from long-chain fatty acids and glucose in dairy cows which were fed with protected fat was studied using stable isotope technique. the experiment was carried out on two groups of dairy cows (n=16 in each group) during the first 15 weeks of the lactation period. the cows were fed isoenergetic and isoproteinogenous diets based on corn silage. about 1.8 kg of tapioca starch in the diet of the starch group was substituted by about 0.7 kg of rumen protected fat (ca salts of palm o ... | 2005 | 16366037 |
| pathological and molecular characterization of xanthomonas campestris strains causing diseases of cassava (manihot esculenta). | fifty-one strains representing xanthomonas campestris pv. manihotis and cassavae and different pathovars occurring on plants of the family euphorbiaceae were characterized by ribotyping with a 16s+23s rrna probe of escherichia coli and by restriction fragment length polymorphism analysis with a plasmid probe from x. campestris pv. manihotis. pathogenicity tests were performed on cassava (manihot esculenta). histological comparative studies were conducted on strains of two pathovars of x. campest ... | 1994 | 16349463 |
| degradation of raw starch by a wild amylolytic strain of lactobacillus plantarum. | lactobacillus plantarum a6, isolated from fermented cassava, can break down cassava raw starch that has not been subjected to preliminary physicochemical treatment. when the ph was kept at 6, the microorganism cultured in a bioreactor excreted a high alpha-amylase activity (60 u/ml). synthesis of the enzyme occurred during the stationary phase and resulted in full hydrolysis of the cassava starch granules. this gave 41 g of lactic acid from 45 g of raw starch after 3 days of fermentation. enzyma ... | 1994 | 16349456 |
| purification and properties of a maltotetraose- and maltotriose-producing amylase from chloroflexus aurantiacus. | a maltotetraose- and maltotriose-producing amylase which is stable at alkaline phs and high temperatures was detected in the culture filtrate of a strain of chloroflexus aurantiacus j-10-f1, a thermophilic, green, photosynthetic bacterium. the enzyme was purified to homogeneity, as demonstrated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, by means of ultrafiltration, ammonium sulfate fractionation, and deae-cellulose, hydroxyapatite, and high-performance liquid chromatographies. ... | 1992 | 16348751 |
| new amylolytic yeast strains for starch and dextrin fermentation. | yeast strains capable of fermenting starch and dextrin to ethanol were isolated from samples collected from brazilian factories in which cassava flour is produced. considerable alcohol production was observed for all the strains selected. one strain (di-10) fermented starch rapidly and secreted 5 times as much amylolytic enzyme than that observed for schwanniomyces alluvius ucd 54-83. this strain and three other similar isolates were classified as saccharomyces cerevisiae var. diastaticus by mor ... | 1988 | 16347755 |
| development of rapidly fermenting strains of saccharomyces diastaticus for direct conversion of starch and dextrins to ethanol. | alcoholic fermentation, growth, and glucoamylase production by 12 strains of saccharomyces diastaticus were compared by using starch and dextrins as substrates. haploid progeny produced from a rapidly fermenting strain, sd2, were used for hybridization with other s. diastaticus and saccharomyces cerevisiae haploids. alcoholic fermentation and enzyme production by hybrid diploids and their haploid parents were evaluated. although the dosage of the sta or dex (starch or dextrin fermentation) genes ... | 1984 | 16346584 |
| factors affecting yield and safety of protein production from cassava by cephalosporium eichhorniae. | the properties of cephalosporium eichhorniae 152 (atcc 38255) affecting protein production from cassava carbohydrate, for use as an animal feed, were studied. this strain is a true thermophile, showing optimum growth at 45 degrees to 47 degrees c, maximum protein yield at 45 degrees c, and no growth at 25 degrees c. it has an optimum ph of about 3.8 and is obligately acidophilic, being unable to sustain growth at ph 6.0 and above in a liquid medium, or ph 7.0 and above on solid media. the optimu ... | 1982 | 16345946 |
| fermentation methods for protein enrichment of cassava and corn with candida tropicalis. | candida tropicalis grows on soluble starch, corn, and cassava powders without requiring that these substrates be previously hydrolyzed. c. tropicalis possesses the enzyme needed to hydrolyze starch, namely, an alpha-amylase. that property has been used to develop a fermentation process whereby c. tropicalis can be grown directly on corn or cassava powders so that the resultant mixture of biomass and residual corn or cassava contains about 20% protein, which represents a balanced diet for either ... | 1980 | 16345495 |
| botanical and geographical origin identification of industrial ethanol by stable isotope analyses of c, h, and o. | the isotope ratios of carbon, hydrogen, and oxygen of rectified alcohols were determined to distinguish their botanical and geographical origins by continuous flow-isotope ratio mass spectrometry (cf-irms). the (13)c/(12)c and (18)o/(16)o ratios of 27 fermented alcohols with known origins showed clusters derived from each botanical origin, viz. corn, sugarcane, wheat, and tapioca. c3 and c4 plants were easily distinguishable by the (13)c/(12)c ratio. sugarcane and corn are both c4 plants, and th ... | 2005 | 16306702 |
| isolation and characterization of an alpha-amylase gene in cassava (manihot esculenta). | the roots of cassava plants (manihot esculenta crantz) accumulate starch as their major form of carbohydrate reserve. starch accumulation and properties are determined by a balance between starch biosynthesis and degradation processes. alpha-amylases (ec 3.2.1.1) are alpha-1,4 endoglycolytic enzymes, responsible for the mobilization of stored carbohydrate reserves by initiating the degradation process. alpha-amylase genes have been shown to be differentially expressed at various developmental st ... | 2005 | 16297635 |
| effect of replacement of maize with cassava peel in cockerel diets on performance and carcass characteristics. | 2005 | 16248221 | |
| l(+)-lactic acid production using lactobacillus casei in solid-state fermentation. | lactobacillus casei was grown at 37 degrees c on sugarcane bagasse (5 g) soaked with cassava starch hydrolysate (final moistening volume 34 ml) containing 3 g reducing sugar in a solid-state condition. the maximum yield of l-lactic acid after various process optimisations was 2.9 g/5 g initial substrate corresponding to 97% conversion of sugar to lactic acid with initial substrate moisture of 72%. | 2005 | 16247675 |
| the impact of the hyperacid ijen crater lake. part i: concentrations of elements in crops and soil. | in asembagus (east java, indonesia) irrigation water is contaminated with effluent from the hyperacid ijen crater lake resulting in a low ph and high levels of various elements. as a first step towards a risk assessment, locally produced food items (rice, maize, cassava leaf, cassava root, peanuts) were collected and concentrations of as, b, ca, cd, co, cu, fe, mg, mn, mo, ni, pb, v, zn were compared to samples from a reference area and with literature values. further, concentrations in rice wer ... | 2005 | 16237597 |
| growth of aspergillus oryzae during treatment of cassava starch processing wastewater with high content of suspended solids. | aspergillus oryzae ifo 30113 was used for the treatment of the cassava starch processing (csp) wastewater. the observations on the fungal morphology showed that, in the shake flasks containing the csp wastewater with the high concentration of suspended solids, the formation of pellets originated from the adherence of germinated spores to solid particles in medium. the attached solid particles were also digested during the fungal fermentation and resulted in the formation of the smooth and hollow ... | 2004 | 16233638 |
| degradation of cell wall materials from sweetpotato, cassava, and potato by a bacterial protopectinase and terminal sugar analysis of the resulting solubilized products. | cell wall materials (cwms) from sweetpotato, cassava, and potato starch residues were degraded using a crude enzyme solution from the culture filtrate of a bacillus sp. isolated from soil, bacillus sp. m4. this organism has been found to secrete polygalacturonic acid lyase (pgl) and glycan depolymerase activities, especially arabinanase, but cellulase activity was nearly absent. sugar analysis of the solubilized product after enzyme treatment at ph 7.0 revealed that it is mainly composed of gala ... | 2002 | 16233167 |
| production of ethanol from liquefied cassava starch using co-immobilized cells of zymomonas mobilis and saccharomyces diastaticus. | co-immobilized cells of saccharomyces diastaticus and zymomonas mobilis produced a high ethanol concentration compared to immobilized cells of s. diastaticus during batch fermentation of liquefied cassava starch. the co-immobilized cells produced 46.7 g/l ethanol from 150 g/l liquefied cassava starch, while immobilized cells of yeast s. diastaticus produced 37.5 g/l ethanol. the concentration of ethanol produced by immobilized cells was higher than that by free cells of s. diastaticus and z. mob ... | 2001 | 16233146 |
| hydroxynitrile lyase catalysis in ionic liquid-containing systems. | the cleavage of mandelonitrile catalysed by hydroxynitrile lyases (hnl) from prunus amygdalus (pahnl) and manihot esculenta (mehnl) proceeded more rapidly in monophasic aqueous media containing 1-propyl-3-methylimidazolium tetrafluoroborate [c4mim][bf4] than in media containing acetonitrile or thf. both hnls were much more thermostable in [c4mim][bf4] than in acetonitrile or thf. the addition of each of the four ionic liquids 1-butyl-, 1-pentyl- and 1-hexyl-3-methylimidazolium tetrafluoroborates ... | 2005 | 16215854 |
| characterisation of the microflora of attiéké, a fermented cassava product, during traditional small-scale preparation. | attiéké is a fermented cassava product consumed mainly in cote d'ivoire. the aim of this study was to characterise the attiéké fermentation by examining products from 15 small-scale production sites at various stages of its preparation. for the preparation of attiéké, fresh cassava is grated to a pulp and inoculated with 10% of a spontaneous traditional inoculum. the inocula contained aerobic mesophiles at mean numbers of 8.2 x 10(7) cfu/g and lactic and acetic acids at mean concentrations of 0. ... | 2006 | 16213052 |
| relationships of intercropped maize, stem borer damage to maize yield and land-use efficiency in the humid forest of cameroon. | stem borers are the most important maize pests in the humid forest zone of cameroon. field trials were conducted in the long and short rainy seasons of 2002 and 2003 to assess the level of damage and yield reductions caused by stem borers in monocropped maize and in maize intercropped with non-host plants such as cassava, cowpea and soybean. the intercrops were planted in two spatial arrangements, i.e. alternating hills or alternating rows. all intercrops and the maize monocrop were grown with a ... | 2005 | 16197562 |
| production and properties of a surfactant obtained from bacillus subtilis grown on cassava wastewater. | the production and properties of a biosurfactant, synthesized by bacillus subtilis lb5a strain, using cassava wastewater as substrate were investigated. the microorganism was able to grow and to produce surfactant on cassava waste, reducing the surface tension of medium to 26.6 mn/m and giving a crude surfactant concentration of 3.0 g/l after 48 h. the surface-active compound retained its properties during exposure to elevate temperatures (100 degrees c), high salinity (20% nacl) and a wide rang ... | 2006 | 16171690 |
| lactic acid bacteria and yeasts associated with spontaneous fermentations during the production of sour cassava starch in brazil. | sour cassava starch is a traditional fermented food used in the preparation of fried foods and baked goods such as traditional cheese breads in brazil. thirty samples of sour cassava starch were collected from two factories in the state of minas gerais. the samples were examined for the presence of lactic acid bacteria, yeasts, mesophilic microorganisms, bacillus cereus and faecal coliforms. lactic acid bacteria and yeasts isolates were identified by biochemical tests, and the identities were co ... | 2005 | 16153731 |
| biodiversity and recombination of cassava-infecting begomoviruses from southern india. | cassava mosaic disease (cmd) is caused by various begomoviruses of the family geminiviridae leading to considerable crop losses in africa and asia. recombination between their genomic components has generated new pathotypes with enhanced virulence in africa. here, we report about a survey on the biodiversity of begomoviruses in cassava from southern india (tamil nadu and kerala states) performed in 2001 and 2002. viral dna a components from stem cuttings were analysed using polymerase chain reac ... | 2006 | 16132175 |
| cassava plants with a depleted cyanogenic glucoside content in leaves and tubers. distribution of cyanogenic glucosides, their site of synthesis and transport, and blockage of the biosynthesis by rna interference technology. | transgenic cassava (manihot esculenta crantz, cv mcol22) plants with a 92% reduction in cyanogenic glucoside content in tubers and acyanogenic (<1% of wild type) leaves were obtained by rna interference to block expression of cyp79d1 and cyp79d2, the two paralogous genes encoding the first committed enzymes in linamarin and lotaustralin synthesis. about 180 independent lines with acyanogenic (<1% of wild type) leaves were obtained. only a few of these were depleted with respect to cyanogenic glu ... | 2005 | 16126856 |
| diversity and technological properties of predominant lactic acid bacteria from fermented cassava used for the preparation of gari, a traditional african food. | traditional fermentation of cassava is dominated by a lactic acid bacteria (lab) population. fermentation is important for improving product flavour and aroma as well as safety, especially by reduction of its toxic cyanogenic glucosides. the production of gari from cassava in benin typically occurs on a household or small industrial scale, and consequently suffers from inconsistent product quality and may not always be safe for consumption. therefore, the diversity of lab from a typical cassava ... | 2005 | 16104351 |
| effect of temperature on geminivirus-induced rna silencing in plants. | short-interfering rnas (sirnas), the molecular markers of posttranscriptional gene silencing (ptgs), are powerful tools that interfere with gene expression and counter virus infection both in plants and animals. here, we report the effect of temperature on geminivirus-induced gene silencing by quantifying virus-derived sirnas and by evaluating their distribution along the virus genome for isolates of five species of cassava geminiviruses in cassava (manihot esculenta, crantz) and nicotiana benth ... | 2005 | 16040661 |
| boron nutrition and chilling tolerance of warm climate crop species. | field observations and glasshouse studies have suggested links between boron (b)-deficiency and leaf damage induced by low temperature in crop plants, but causal relationships between these two stresses at physiological, biochemical and molecular levels have yet to be explored. limited evidence at the whole-plant level suggests that chilling temperature in the root zone restricts b uptake capacity and/or b distribution/utilization efficiency in the shoot, but the nature of this interaction depen ... | 2005 | 16033777 |
| effect of ripe fruit pulp on the sensory and nutritive quality of ready-to-eat breakfast cereal produced from maize and soybean flours and cassava starch blends. | the effects of various concentrations of different ripe fruit pulps on the sensory and nutritive quality of breakfast cereal were studied. the breakfast cereal was formulated using 1 kg composite flour (composed of 600 g maize flour and 400 g soy flour) in addition to 100 g cassava starch, 225 g sugar and 12 g salt. pineapple, pawpaw and banana ripe fruit pulps were added separately to the breakfast formulation at concentrations of 0, 100, 200, 300 and 400 g/kg composite flour. using sensory eva ... | 2005 | 16019313 |
| epistasis in the expression of relevant traits in cassava (manihot esculenta crantz) for subhumid conditions. | there is limited knowledge on the inheritance of agronomic traits in cassava and the importance of epistasis for most crops. a nine-parent diallel study was conducted in subhumid environments. thirty clones were obtained from each f1 cross. each clone was represented by six plants, which were distributed in three replications at two locations. therefore the same 30 genotypes of each f1 cross were planted in the three replications at the two locations. analysis of variance suggested significant g ... | 2006 | 16014808 |
| microrna-binding viral protein interferes with arabidopsis development. | micrornas (mirnas) are small (approximately 21 nt), noncoding rnas that negatively regulate target mrnas at the posttranscriptional level that are involved in development. in plants, virus-induced disease symptoms often result in developmental abnormalities resembling perturbation of mirna-mediated function. here, we report that expression in transgenic plants of a geminivirus-encoded ac4 protein from african cassava mosaic virus cameroon strain (acmv), a suppressor of posttranscriptional gene s ... | 2005 | 16006510 |