Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
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| plant age and genotype affect the bacterial community composition in the tuber rhizosphere of field-grown sweet potato plants. | the hypothesis that sweet potato genotypes containing different starch yields in their tuberous roots can affect the bacterial communities present in the rhizosphere (soil adhering to tubers) was tested in this study. tuberous roots of field-grown sweet potato of genotypes ipb-149 (commercial genotype), ipb-052, and ipb-137 were sampled three and six months after planting and analyzed by denaturing gradient gel electrophoresis (dgge) and pyrosequencing analysis of 16s rrna genes pcr-amplified fr ... | 2014 | 24597529 |
| purple sweet potato (ipomoea batatas l.) anthocyanins: preventive effect on acute and subacute alcoholic liver damage and dealcoholic effect. | this study aimed to investigate the dealcoholic effect and preventive effect of anthocyanins from purple sweet potato (pspas) on acute and subacute alcoholic liver damage (ald). seven-week-old male inbred mice were grouped into five groups: control group (without pspas and ethanol treatments), model group (with ethanol treatment only), low-dose group (50 mg pspas/kg body weight), middle-dose group (125 mg pspas/kg body weight), and high-dose group (375 mg pspas/kg body weight), and the mice in a ... | 2014 | 24564852 |
| carbon monoxide regulates the expression of the wound-inducible gene ipomoelin through antioxidation and mapk phosphorylation in sweet potato. | carbon monoxide (co), one of the haem oxygenase (ho) products, plays important roles in plant development and stress adaptation. however, the function of co involved in wounding responses is seldom studied. a wound-inducible gene, ipomoelin (ipo), of sweet potato (ipomoea batatas cv. tainung 57) was used as a target to study the regulation of co in wounding responses. after wounding for 1h, the endogenous co content and ibho expression level were significantly reduced in leaves. ipo expression u ... | 2014 | 25063862 |
| sweet potato (ipomoea batatas [l.] lam)--a valuable medicinal food: a review. | ipomoea batatas (l.) lam, also known as sweet potato, is an extremely versatile and delicious vegetable that possesses high nutritional value. it is also a valuable medicinal plant having anti-cancer, antidiabetic, and anti-inflammatory activities. sweet potato is now considered a valuable source of unique natural products, including some that can be used in the development of medicines against various diseases and in making industrial products. the overall objective of this review is to give a ... | 2014 | 24921903 |
| digestibility and structural properties of thermal and high hydrostatic pressure treated sweet potato (ipomoea batatas l.) protein. | this study assessed the effects of thermal (40, 60, 80, 100 and 127 °c) and high hydrostatic pressure (hhp, 200, 400 and 600 mpa) treatments on the in vitro digestibility and structural properties of sweet potato protein (spp). the results showed that the in vitro digestibility of spp increased significantly with increasing heating temperature and heating time (0-60 min), while hhp treatment had little or no effect. native spp denaturation temperature (t d ) and enthalpy change (δh) were 89.0 °c ... | 2014 | 24913513 |
| conformational characterization of ipomotaosides and their recognition by cox-1 and 2. | the aerial parts of ipomoea batatas are described herein to produce four new resin glycosides, designated as ipomotaosides a, b, c, and d. ipomotaoside a was found to present inhibitory activity on both cyclooxygenases. however, the conformational elucidation of these molecules may be difficult due to their high flexibility. in this context, the current work presents a conformational characterization of ipomotaosides a-d in aqueous and nonaqueous solvents. the employed protocol includes metadyna ... | 2014 | 24879586 |
| isolation and identification of colourless caffeoyl compounds in purple sweet potato by hplc-dad-esi/ms and their antioxidant activities. | more than 10 red anthocyanins and related glucosides have been isolated and identified from purple sweet potato (ipomoea batatas, ayamurasaki) in the recent decades. this paper reports the isolation of colourless caffeoyl compounds from purple sweet potato using ab-8 macroresin absorption and semi-preparative hplc-dad. the structures of the five isolated monomers were identified as: 5-caffeoylquinic acid (1), 6-o-caffeoyl-β-d-fructofuranosyl-(2-1)-α-d-glucopyranoside (2) and trans-4,5-dicaffeoyl ... | 2014 | 24837917 |
| carotenoids gene markers for sweetpotato (ipomoea batatas l. lam): applications in genetic mapping, diversity evaluation and cross-species transference. | carotenoids play essential biological roles in plants, and genes involved in the carotenoid biosynthesis pathway are evolutionarily conserved. orange sweetpotato is an important source of β-carotene, a precursor of vitamin a. in spite of this, only a few research studies have focussed on the molecular aspects of carotenoid genes regarding their specific sequence and structure. in this study, we used published carotenoid gene sequences from ipomoea and other species for "exon-primed intron-crossi ... | 2014 | 24384928 |
| activation of nitrogen-fixing endophytes is associated with the tuber growth of sweet potato. | endophytic nitrogen-fixing organisms have been isolated from the aerial parts of field-grown sweet potato (ipomoea batatas). the (15)n dilution method, which is based on the differences in stable nitrogen isotope ratios, is useful for measuring nitrogen fixation in the field. in this study, seedlings of two sweet potato cultivars, 'beniazuma' and 'benikomachi,' were transplanted into an alluvial soil that had been treated with organic improving material in advance. whole plants were sampled ever ... | 2014 | 26819874 |
| the potential of orange-fleshed sweet potato to prevent vitamin a deficiency in africa. | vitamin a deficiency is among major health problems worldwide that leads to blindness, retarded growth and death, particularly in developing countries. in these countries, vitamin a deficiency largely affects pre-school children, pregnant and lactating mothers, and the rural poor. for instance, the predicted prevalence of vitamin a deficiency for 36 sub-saharan african countries is 19.1%. | 2014 | 25835237 |
| evaluation of metals in several varieties of sweet potatoes (ipomoea batatas l.): comparative study. | sweet potatoes are a staple in the diet of some people and an excellent source of minerals. metal monitoring in food, like sweet potatoes, provides basic information on safety aspects in regulatory processes as well as nutritional values. one hundred five samples of three varieties of sweet potatoes were randomly obtained from supermarkets, farmers markets, and farmers' plots in tenerife (canary islands, spain). the edible portion (pulp) was the only part considered for analysis. flame atomic ab ... | 2014 | 23979675 |
| intraspecific and intragenomic variability of its rdna sequences reveals taxonomic problems in ceratocystis fimbriata sensu stricto. | fourteen new species in the latin american clade (lac) of the ceratocystis fimbriata complex recently were distinguished from c. fimbriata sensu stricto largely based on variation in its rdna sequences. among the 116 isolates representing the lac, there were 41 its haplotypes. maximum parsimony (mp) analysis of its sequences produced poorly resolved trees. in contrast, analyses of mating-type genes (mat1-1-2 and mat1-2-1) resolved a single mp tree with branches of high bootstrap and posterior pr ... | 2014 | 24782492 |
| a novel α/β-hydrolase gene ibmas enhances salt tolerance in transgenic sweetpotato. | salt stress is one of the major environmental stresses in agriculture worldwide and affects crop productivity and quality. the development of crops with elevated levels of salt tolerance is therefore highly desirable. in the present study, a novel maspardin gene, named ibmas, was isolated from salt-tolerant sweetpotato (ipomoea batatas (l.) lam.) line nd98. ibmas contains maspardin domain and belongs to α/β-hydrolase superfamily. expression of ibmas was up-regulated in sweetpotato under salt str ... | 2014 | 25501819 |
| susceptibility of sweet potato (ipomoea batatas) peel proteins to digestive enzymes. | sweet potato proteins have been shown to possess antioxidant and antidiabetic properties in vivo. the ability of a protein to exhibit systemic effects is somewhat unusual as proteins are typically susceptible to digestive enzymes. this study was undertaken to better understand how digestive enzymes affect sweet potato proteins. two fractions of industrially processed sweet potato peel, containing 6.8% and 8.5% protein and 80.5% and 83.3% carbohydrate, were used as a source of protein. sweet pota ... | 2014 | 25473492 |
| nutritional and physical properties of organic beauregard sweet potato [ipomoea batatas (l.)] as influenced by broiler litter application rate. | organic farming has been on an upward trend in recent years. however, the manures used like broiler litter have variable nutrient content, making it important to establish optimal application rate, for maximum crop yield and quality. additionally, some states like alabama restricts the amount of broiler litter to control excessive nutrients accumulation which can lead to surface and ground water contamination. the current study evaluated the effect of broiler litter at rates 0, 0.5, 1, 2, and 3 ... | 2014 | 25473490 |
| eliminating interference by anthocyanin in chlorophyll estimation of sweet potato (ipomoea batatas l.) leaves. | spectral reflectance was evaluated for its usefulness as a nondestructive estimation of chlorophyll (chl) content from three cultivars of sweet potato (ipomoea batatas l.) with green, yellow, and purple leaves grown in a greenhouse for 22 days. while the green and yellow leaves contain variant amount of photosynthetic pigments without or with little level of anthocyanins, the purple leaves, except large amount of photosynthetic pigments, have high quantity of anthocyanins. | 2014 | 28510919 |
| 2-oxoglutarate-dependent dioxygenases in the biosynthesis of simple coumarins. | coumarins are natural plant products that have been the subject of extensive phytochemical and pharmacological research studies in the past few decades. the core structure of coumarins is derived from the respective cinnamates via ortho-hydroxylation of the aromatic ring, trans/cis isomerization, and lactonization. various substitution patterns of coumarins have been reported, whereas the biosynthesis of coumarins remains elusive. ortho-hydroxylation is a key step in simple coumarin biosynthesis ... | 2014 | 25404933 |
| insect pests of sweetpotato in uganda: farmers' perceptions of their importance and control practices. | insect pests are among the most important constraints limiting sweetpotato (ipomoea batatas) production in africa. however, there is inadequate information about farmers' knowledge, perceptions and practices in the management of key insect pests. this has hindered development of effective pest management approaches for smallholder farmers. a standard questionnaire was used to interview individual sweetpotato farmers (n = 192) about their perception and management practices regarding insect pests ... | 2014 | 25279278 |
| aqueous extract of ipomoea batatas reduces food intake in male wistar rats: a pilot study. | food intake is regulated by the complex interaction of psychological and physiological events associated with ingestion. food that increases short-term satiety decreases the amount of energy ingested subsequently and thus could potentially help in weight management in the long run. potato, a common starchy tuber in our environment is believed to contain substances that can help maintain and increases short-term satiety. | 2014 | 25221722 |
| assessment of genetic diversity of sweet potato in puerto rico. | sweet potato (ipomoea batatas l.) is the seventh most important food crop due to its distinct advantages, such as adaptability to different environmental conditions and high nutritional value. assessing the genetic diversity of this important crop is necessary due to the constant increase of demand for food and the need for conservation of agricultural and genetic resources. in puerto rico (pr), the genetic diversity of sweet potato has been poorly understood, although it has been part of the di ... | 2014 | 25551388 |
| down-regulation of sweetpotato lycopene β-cyclase gene enhances tolerance to abiotic stress in transgenic calli. | lycopene β-cyclase (lcy-β) is a key enzyme involved in the synthesis of α- and β-branch carotenoids such as α-carotene and β-carotene through the cyclization of lycopene. iblcy-β had a length of 1,506 bp and approximately 80 % nucleotide sequence identity with that of tomato lcy-β. iblcy-β was strongly expressed in leaves, and expression was enhanced by salt-stress and osmotic-stress conditions. to characterize the lcy-β gene (iblcy-β) of sweetpotato (ipomoea batatas), it was isolated and transf ... | 2014 | 25213547 |
| sweet potato resistance to euscepes postfasciatus (coleoptera: curculionidae): larval performance adversely effected by adult's preference to tuber for food and oviposition. | the preferences of the west indian sweet potato weevil, euscepes postfasciatus (fairmaire), to tubers of sweet potato, ipomoea batatas (l.), for food and for oviposition were evaluated, and correlated to sweet potato's resistance to immatures. adults (parent) were released in a plastic box containing tubers of sweet potato cultivars and maintained for 5 d, after which the adults on each tuber were counted. all adults were then removed and each tuber was maintained separately. new adults that eme ... | 2014 | 25195460 |
| the predatory mite phytoseiulus macropilis (acari: phytoseiidae) occurring on sweet potato (ipomoea batatas) plants in diamantina, minas gerais state, brazil. | 2014 | 25296218 | |
| dietary sweet potato (ipomoea batatas l.) leaf extract attenuates hyperglycaemia by enhancing the secretion of glucagon-like peptide-1 (glp-1). | 'suioh', a sweet potato (ipomoea batatas l.) cultivar developed in japan, has edible leaves and stems. the sweet potato leaves contain polyphenols such as caffeoylquinic acid (cqa) derivatives. it has multiple biological functions and may help to regulate the blood glucose concentration. in this study, we first examined whether sweet potato leaf extract powder (sp) attenuated hyperglycaemia in type 2 diabetic mice. administration of dietary sp for 5 weeks significantly lowered glycaemia in type ... | 2014 | 25066255 |
| the influence of deep frying using various vegetable oils on acrylamide formation in sweet potato (ipomoea batatas l. lam) chips. | the objective of this study was to evaluate the precursors of acrylamide formation in sweet potato (sp) (ipomoea batatas l. lam) chips and to determine the effect of different types of vegetable oils (vos), that is, palm olein, coconut oil, canola oil, and soya bean oil, on acrylamide formation. the reducing sugars and amino acids in the sp slices were analyzed, and the acrylamide concentrations of sp chips were measured. sp chips that were fried in a lower degree of unsaturation oils contained ... | 2014 | 24344977 |
| processing treatments for mitigating acrylamide formation in sweetpotato french fries. | acrylamide formation in sweetpotato french fries (spff) is likely a potential health concern as there is an increasing demand for good-quality fries from carotene-rich sweetpotatoes (sp). this is the first report on acrylamide formation in spff as affected by processing methods. acrylamide levels in spff from untreated sp strips fried at 165 °c for 2, 3, and 5 min were 124.9, 255.5, and 452.0 ng/g fresh weight, which were reduced by about 7 times to 16.3, 36.9, and 58.3 ng/g, respectively, when ... | 2014 | 24328312 |
| botanical origin of dietary supplements labeled as "kwao keur", a folk medicine from thailand. | in the course of our study on the quality of dietary supplements in japan, both the internal transcribed spacer (its) sequence of nrdna and the rps16 intron sequence of cpdna of products labeled as "kwao keur" were investigated. as a result, the dna sequence of pueraria candollei var. mirifica, which is the source plant of kwao keur, was observed in only about half of the products. inferred from the determined sequences, source plants in the other products included medicago sativa, glycyrrhiza u ... | 2014 | 23677774 |
| antioxidant activities of two metallothionein-like proteins from sweet potato (ipomoea batatas [l.] lam. `tainong 57') storage roots and their synthesized peptides. | metallothionein (mt) characterized by their low molecular weight and high cysteine content. | 2014 | 28510944 |
| physicochemical properties of flours and starches derived from traditional indonesian tubers and roots. | flours and starches isolated from traditional tubers and roots grown in indonesia have physical and chemical properties suitable for certain food applications. compared to other flour samples, cassava and canna flours contained the highest amount of total starch (ts) (77.4 and 77.1 %, respectively). taro starch had the lowest amount of ts among other starch samples with 75.4 %. the highest amount of amylose was observed from yam and canna flours (25.2 and 23.2 %, respectively). among starch samp ... | 2014 | 25477633 |
| biogas energy production from tropical biomass wastes by anaerobic digestion. | anaerobic digestion (ad) is an attractive technology in tropical regions for converting locally abundant biomass wastes into biogas which can be used to produce heat, electricity, and transportation fuels. however, investigations on ad of tropical forestry wastes, such as albizia biomass and food wastes, such as taro, papaya, and sweet potato, are limited. in this study, these tropical biomass wastes were evaluated for biogas production by liquid ad (l-ad) and/or solid-state ad (ss-ad), dependin ... | 2014 | 25022835 |
| cocoa flavonoids attenuate high glucose-induced insulin signalling blockade and modulate glucose uptake and production in human hepg2 cells. | insulin resistance is the primary characteristic of type 2 diabetes. cocoa and its main flavanol, (-)-epicatechin (ec), display some antidiabetic effects, but the mechanisms for their preventive activities related to glucose metabolism and insulin signalling in the liver remain largely unknown. in the present work, the preventive effect of ec and a cocoa polyphenolic extract (cpe) on insulin signalling and on both glucose production and uptake are studied in insulin-responsive human hepg2 cells ... | 2014 | 24262486 |
| risk factors for renal cell carcinoma in a japanese population. | the incidence of renal cell carcinoma (rcc) is high in western and northern europe and north america, and low in asia. although the incidence of rcc in japan is lower than the rates in the other industrialized countries, there is no doubt that it is increasing. in this paper, we would like to introduce the summary of findings of jacc study, which evaluate the risk factors for rcc in a japanese population. jacc study suggests nine risk factors (i.e., smoking, obesity, low physical activity, hyper ... | 2014 | 25422180 |
| development of extruded ready-to-eat (rte) snacks using corn, black gram, roots and tuber flour blends. | extruded rte snacks were prepared from flour blends made with corn flour, bengal gram flour, roots and tuber flours in a proportion of 60-80: 20: 20 respectively and moisture was adjusted to 17-20 %. the roots and tubers flours were developed from potato (solanum tuberosum), yam (dioscorea spp.), sweet potato (ipomoea batatas l.), taro (colocassia esculenta) and beet root (beta vulgaris). different formulations were extruded at 80 ± 5 °c (heater i) and 95-105 °c (heater ii) temperature, 300-350 ... | 2014 | 25190848 |
| refined avian risk assessment for chlorpyrifos in the united states. | refined risk assessments for birds exposed to flowable and granular formulations ofcpy were conducted for a range of current use patterns in the united states. overall,the collective evidence from the modeling and field study lines of evidence indicate that flowable and granular cpy do not pose significant risks to the bird communities foraging in agro-ecosystems in the united states. the available information indicates that avian incidents resulting from the legal, registered uses of cpy have b ... | 2014 | 24723136 |
| horizontal transmission of "candidatus liberibacter solanacearum" by bactericera cockerelli (hemiptera: triozidae) on convolvulus and ipomoea (solanales: convolvulaceae). | "candidatus liberibacter solanacearum" (proteobacteria) is an important pathogen of solanaceous crops (solanales: solanaceae) in north america and new zealand, and is the putative causal agent of zebra chip disease of potato. this phloem-limited pathogen is transmitted to potato and other solanaceous plants by the potato psyllid, bactericera cockerelli (hemiptera: triozidae). while some plants in the convolvulaceae (solanales) are also known hosts for b. cockerelli, previous efforts to detect li ... | 2015 | 26555359 |
| selenium accumulating leafy vegetables are a potential source of functional foods. | selenium deficiency in humans has been associated with various diseases, the risks of which can be reduced through dietary supplementation. selenium accumulating plants may provide a beneficial nutrient for avoiding such illnesses. thus, leafy vegetables such as amaranthus hybridus, amaranthus sp., cucurbita maxima, ipomoea batatas, solanum villosum, solanum scabrum, and vigna unguiculata were explored for their capabilities to accumulate selenium when grown on selenium enriched soil and for use ... | 2015 | 26955635 |
| species or genotypes? reassessment of four recently described species of the ceratocystis wilt pathogen, ceratocystis fimbriata, on mangifera indica. | ceratocystis wilt is among the most important diseases on mango (mangifera indica) in brazil, oman, and pakistan. the causal agent was originally identified in brazil as ceratocystis fimbriata, which is considered by some as a complex of many cryptic species, and four new species on mango trees were distinguished from c. fimbriata based on variation in internal transcribed spacer sequences. in the present study, phylogenetic analyses using dna sequences of mating type genes, tef-1α, and β-tubuli ... | 2015 | 25822187 |
| inclusion levels of sweet potato root meal in the diet of broilers i. effect on performance, organ weights, and carcass quality. | the amount of corn available for animal and poultry feed has been unpredictable in recent years due to the increased use of corn for ethanol production. as a consequence, there has been an increase in the price of feed, chicken, and chicken products. researchers are exploring alternative feed sources to substitute for corn in poultry ration. this study evaluated the performance and carcass quality of broilers fed diets containing sweet potato root meal (sprm). after a complete nutrient analysis ... | 2015 | 25840965 |
| rice and bean targets for biofortification combined with high carotenoid content crops regulate transcriptional mechanisms increasing iron bioavailability. | iron deficiency affects thousands of people worldwide. biofortification of staple food crops aims to support the reduction of this deficiency. this study evaluates the effect of combinations of common beans and rice, targets for biofortification, with high carotenoid content crops on the iron bioavailability, protein gene expression, and antioxidant effect. iron bioavailability was measured by the depletion/repletion method. seven groups were tested (n = 7): pontal bean (pb); rice + pontal bean ... | 2015 | 26610564 |
| anti-inflammatory and anticancer activities of taiwanese purple-fleshed sweet potatoes (ipomoea batatas l. lam) extracts. | purple-fleshed sweet potato (pfsp) (ipomoea batatas l. lam) has been known to possess high amount of anthocyanins which contribute to its antioxidant activity. however, a few reports are available concerning its anti-inflammatory and anticancer properties. in this study, pfsp "tainung 73," which is locally grown in taiwan, was steamed and extracted using acidified ethanol ph 3.5 under 80°c. two kinds of crude anthocyanins extracts were obtained, namely, sp (steamed, peeled) and snp (steamed, no ... | 2015 | 26509161 |
| abundant storage protein depletion from tuber proteins using ethanol precipitation method: suitability to proteomics study. | high-abundance proteins (haps) hamper in-depth proteome study necessitating development of a haps depletion method. here, we report a novel ethanol precipitation method (epm) for haps depletion from total tuber proteins. ethanol showed a dose-dependent effect on depletion of sporamin from sweet potato and patatin from potato tubers, respectively. the 50% ethanol was an optimal concentration. 2de analysis of epm-prepared sweet potato proteins also revealed enrichment of storage proteins (sps) in ... | 2015 | 25689267 |
| screening, separating, and completely recovering polyphenol oxidases and other biochemicals from sweet potato wastewater in starch production. | polyphenol oxidase (ppo) has multiple functions, and the lack of commercially available enzyme sources limits its widespread application in various industries. an accurate ppo assay was developed by hplc determination of the substrate oxidation. resources screening indicated that sweet potato (ipomoea batatas l.) wastewater in starch production has high ppo activity. a procedure was developed for separately recovering ppo, β-amylase, sporamins, and small molecular nutrients (smns) from sweet pot ... | 2015 | 25190667 |
| batatins viii-xi, glycolipid ester-type dimers from ipomoea batatas. | sweet potato (ipomoea batatas) is native to the tropics of central and south america, where many varieties have been consumed for more that 5000 years. in developing countries, this crop is a recognized effective food for fighting malnutrition. purification of the minor lipophilic glicolipids found in the n-hexane-soluble resin glycosides from the white-skinned variety was performed by preparative-scale recycling hplc. application of column overload, peak shaving, heart cutting, and recycling te ... | 2015 | 25531152 |
| overexpression of the ibmyb1 gene in an orange-fleshed sweet potato cultivar produces a dual-pigmented transgenic sweet potato with improved antioxidant activity. | the r2r3-type protein ibmyb1 is a key regulator of anthocyanin biosynthesis in the storage roots of sweet potato [ipomoea batatas (l.) lam]. previously, we demonstrated that ibmyb1 expression stimulated anthocyanin pigmentation in tobacco leaves and arabidopsis. here, we generated dual-pigmented transgenic sweet potato plants that accumulated high levels of both anthocyanins and carotenoids in a single sweet potato storage root. an orange-fleshed cultivar with high carotenoid levels was transfor ... | 2015 | 25220246 |
| comparative analysis of phytochemicals and nutrient availability in two contrasting cultivars of sweet potato (ipomoea batatas l.). | sweet potato ranks as the world's seventh most important food crop, and has major contribution to energy and phytochemical source of nutrition. to unravel the molecular basis for differential nutrient availability, and to exploit the natural genetic variation(s) of sweet potato, a series of physiochemical and proteomics experiment was conducted using two contrasting cultivars, an orange-fleshed sweet potato (ofsp) and a white-fleshed sweet potato (wfsp). phytochemical screening revealed high per ... | 2015 | 25466112 |
| preparative purification of polyphenols from sweet potato (ipomoea batatas l.) leaves by ab-8 macroporous resins. | in this study, the adsorption properties of ab-8 macroporous resin for sweet potato leaf polyphenols was investigated. the adsorption mechanism was elaborated by the langmuir and freundlich equations, and the purification parameters were optimised by adsorption and desorption tests. the constituents and their contents of the purified products were analysed, and the antioxidant activities were determined. the results showed that the optimal processing parameters were as follows: an initial polyph ... | 2015 | 25442539 |
| analyses of the complete genome and gene expression of chloroplast of sweet potato [ipomoea batata]. | sweet potato [ipomoea batatas (l.) lam] ranks among the top seven most important food crops cultivated worldwide and is hexaploid plant (2n=6x=90) in the convolvulaceae family with a genome size between 2,200 to 3,000 mb. the genomic resources for this crop are deficient due to its complicated genetic structure. here, we report the complete nucleotide sequence of the chloroplast (cp) genome of sweet potato, which is a circular molecule of 161,303 bp in the typical quadripartite structure with la ... | 2015 | 25874767 |
| identification of low-cd cultivars of sweet potato (ipomoea batatas (l.) lam.) after growing on cd-contaminated soil: uptake and partitioning to the edible roots. | cadmium (cd) contamination in agricultural products presents a threat to humans when consumed. sweet potato is the world's seventh most important food crop. the aims of this study were to screen for low-cd sweet potato cultivars and clarify the mechanisms of low-cd accumulation in edible roots. a pot experiment was conducted to investigate the variation of cd uptake and translocation among 30 sweet potato cultivars grown in contaminated soils with three different cd concentrations. cadmium conce ... | 2015 | 25860549 |
| response characteristics of soil fractal features to different land uses in typical purple soil watershed. | as a fundamental characteristic of soil physical properties, the soil particle size distribution (psd) is important in the research on soil moisture migration, solution transformation, and soil erosion. in this research, the psd characteristics with distinct methods in different land uses are analyzed. the results show that the upper bound of the volume domain of the clay domain ranges from 5.743 μm to 5.749 μm for all land-use types. for the silt domain of purple soil, the value ranges among 28 ... | 2015 | 25856376 |
| the physicochemical properties of microwave-assisted encapsulated anthocyanins from ipomoea batatas as affected by different wall materials. | this study focuses on the impact of different wall materials on the physicochemical properties of microwave-assisted encapsulated anthocyanins from ipomoea batatas. using the powder characterization technique, purple sweet potato anthocyanin (pspas) powders were analysed for moisture content, water activity, dissolution time, hygroscopicity, color and morphology. pspas were produced using different wall materials: maltodextrin (md), gum arabic (ga) and a combination of gum arabic and maltodextri ... | 2015 | 25838887 |
| impact of amylose content on starch physicochemical properties in transgenic sweet potato. | the intrinsic relationship between amylose content and starch physicochemical properties was studied using six representative starch samples (amylose content 0-65%) produced from transgenic sweet potato (cultivar xushu22). the transgenic lines (waxy and high-amylose) and wild-type (wt) sweet potatoes were analyzed for amylose content, particle size and chain length distribution, x-ray diffraction analysis, thermal characteristics, pasting and rheological property. compared to the wt starch, the ... | 2015 | 25817686 |
| suppression of the invasive plant mile-a-minute (mikania micrantha) by local crop sweet potato (ipomoea batatas) by means of higher growth rate and competition for soil nutrients. | there are a variety of ways of increasing crop diversity to increase agricultural sustainability and in turn having a positive influence on nearby natural ecosystems. competitive crops may provide potent management tools against invasive plants. to elucidate the competitive mechanisms between a sweet potato crop (ipomoea batatas) and an invasive plant, mile-a-minute (mikania micrantha), field experiments were carried out in longchuan county of yunnan province, southwest china, utilizing a de wit ... | 2015 | 25626963 |
| a comparative study of proteomic differences between pencil and storage roots of sweetpotato (ipomoea batatas (l.) lam.). | fibrous roots of sweetpotato (ipomoea batatas (l.) lam.) usually develop into both pencil and storage roots. to understand protein function in root development, a proteomic analysis was conducted on the pencil and storage roots of the light orange-fleshed sweetpotato cultivar, yulmi. two-dimensional gel electrophoresis showed that expression of 30 protein spots differed between pencil and storage roots: 15 proteins were up-regulated or expressed in pencil roots and 15 in storage roots. different ... | 2015 | 25562766 |
| phyotoxicity of diesel soil contamination on the germination of lactuca sativa and ipomoea batatas. | phytotoxic effect of diesel contaminated soil on germination rate of lactuca sativa and ipomoea batatas, at two concentrations ranges (0-6ml and 0-30ml), were investigated and compared. diesel soil contamination was simulated and soil samples were taken from contaminated soil at 1, 5,10, 15, 25, 50, 75 and 100 days should be after planting. the result showed that in both plant species, diesel inhibited germination in a concentration dependent manner, also, the influence of diesel contamination d ... | 2015 | 26688970 |
| de novo transcriptome sequencing of the orange-fleshed sweet potato and analysis of differentially expressed genes related to carotenoid biosynthesis. | sweet potato, ipomoea batatas (l.) lam., is an important food crop worldwide. the orange-fleshed sweet potato is considered to be an important source of beta-carotene. in this study, the transcriptome profiles of an orange-fleshed sweet potato cultivar "weiduoli" and its mutant "hvb-3" with high carotenoid content were determined by using the high-throughput sequencing technology. a total of 13,767,387 and 9,837,090 high-quality reads were produced from weiduoli and hvb-3, respectively. these re ... | 2015 | 26649293 |
| influence of diesel contamination in soil on growth and dry matter partitioning of lactuca sativa and ipomoea batatas. | phytotoxic effect of diesel contaminated soil was investigated on growth and dry matter partitioning in lactuca sativa and ipomoea batatas in greenhouse pot experiment at two concentration range (0-30 ml and 0-6 ml diesel kg(-1) soil) for 14 weeks. the results indicated thatwhole plant biomass, stem length, root length, number of leaves and leaf chlorophyll in two plants were negatively correlated with increasing diesel concentrations. the critical concentration of diesel associated with 10% dec ... | 2015 | 26521567 |
| inheritance of low pasting temperature in sweetpotato starch and the dosage effect of wild-type alleles. | sweetpotato (ipomoea batatas (l.) lam.), which is an outcrossing hexaploid, is one of the most important starch-producing crops in the world. during the last decade, new sweetpotato cultivars, e.g. 'quick sweet', which have approximately 20°c lower pasting temperature, slower retrogradation and higher digestibility of raw starch than ordinary cultivars, have been developed in japan. genetic analysis of these variants with low pasting temperature starch was conducted in this study. using 8 varian ... | 2015 | 26366119 |
| effects of anthocyanins from purple sweet potato (ipomoea batatas l. cultivar eshu no. 8) on the serum uric acid level and xanthine oxidase activity in hyperuricemic mice. | this study was aimed at evaluating the hypouricemic effect of the anthocyanin-rich purple sweet potato extract (apspe). in vitro, apspe has been proved to significantly inhibit xo activity in a dose-dependent manner. in vivo, apspe could not only inhibit the xo activity in mouse liver, but also reduce the serum uric acid level in hyperuricemic mice and affect the expression of mrna levels of related renal transporters, such as murat1, mglut9, moat1 and moctn2. moreover, apspe could effectively r ... | 2015 | 26201407 |
| adventitious root primordia formation and development in stem nodes of 'georgia jet' sweetpotato, ipomoea batatas. | • | 2015 | 26199362 |
| promoter analysis of the sweet potato adp-glucose pyrophosphorylase gene ibagp1 in nicotiana tabacum. | the ibagp1 gene of sweet potato ( ipomoea batatas ) encodes the sucrose-inducible small subunit of adp-glucose pyrophosphorylase. through expression analysis of 5'-truncations and synthetic forms of the ibagp1 promoter in transgenic tobacco, we show that sure-like elements and w-box elements of the promoter contribute to the sucrose inducibility of this gene. sweet potato (ipomoea batatas) contains two genes (ibagp1 and ibagp2) encoding the catalytically active small subunits of adp-glucose pyro ... | 2015 | 26183951 |
| temporal patterns of gene expression associated with tuberous root formation and development in sweetpotato (ipomoea batatas). | the tuberous root of sweetpotato is undisputedly an important organ from agronomic and biological perspectives. little is known regarding the regulatory networks programming tuberous root formation and development. | 2015 | 26174091 |
| demographic comparison of sweetpotato weevil reared on a major host, ipomoea batatas, and an alternative host, i. triloba. | in this study, we collected life table data for the sweetpotato weevil, cylas formicarius, grown on ipomoea batatas and ipomoea triloba, and analyzed them using an age-stage, two-sex life table. we also demonstrated the growth potential of c. formicarius on these two host plants by using population projection. these data will be useful to the growers to the selection or eradication of host plants in an integrated control strategy for c. formicarius for the entire area of the targeted areas. we f ... | 2015 | 26156566 |
| the influences of purple sweet potato anthocyanin on the growth characteristics of human retinal pigment epithelial cells. | anthocyanins have been proven to be beneficial to the eyes. however, information is scarce about the effects of purple sweet potato (ipomoea batatas, l.) anthocyanin (pspa), a class of anthocyanins derived from purple sweet potato roots, on visual health. | 2015 | 26070791 |
| construction of a linkage map based on retrotransposon insertion polymorphisms in sweetpotato via high-throughput sequencing. | sweetpotato (ipomoea batatas l.) is an outcrossing hexaploid species with a large number of chromosomes (2n = 6x = 90). although sweetpotato is one of the world's most important crops, genetic analysis of the species has been hindered by its genetic complexity combined with the lack of a whole genome sequence. in the present study, we constructed a genetic linkage map based on retrotransposon insertion polymorphisms using a mapping population derived from a cross between 'purple sweet lord' (psl ... | 2015 | 26069444 |
| [screening of the anti-tumor active fraction from ipomoea batatas lam. (cv.simon) leaves]. | three fractions (sm, sm-a, sm-b) were prepared from different polarity parts of ipomoea batatas lam. (cv.simon) leaves and the anti-tumor potency as well as the dose-response relations were evaluated. | 2015 | 26032078 |
| immune activity of sweet potato (ipomoea batatas l.) glycoprotein after enzymatic and chemical modifications. | this study aimed to investigate the immune activity of sweet potato (ipomoea batatas l.) glycoprotein (spg-1) before and after enzymatic and chemical modifications. the protein portion of spg-1 was modified by pepsin, trypsin, and acetylation treatments. the carbohydrate portion was modified by glucoamylase, naio4, and sulfation treatments. the carbohydrate chain of spg-1 (spg-1-c) was obtained. immune activity was analyzed by measuring the serum lysozyme activity and t cell immune response. spg ... | 2015 | 26021307 |
| cytokinin-dependent secondary growth determines root biomass in radish (raphanus sativus l.). | the root serves as an essential organ in plant growth by taking up nutrients and water from the soil and supporting the rest of the plant body. some plant species utilize roots as storage organs. sweet potatoes (ipomoea batatas), cassava (manihot esculenta), and radish (raphanus sativus), for example, are important root crops. however, how their root growth is regulated remains unknown. in this study, we characterized the relationship between cambium and radial root growth in radish. through a c ... | 2015 | 25979997 |
| the sweet potato rbcs gene (ibrbcs1) promoter confers high-level and green tissue-specific expression of the gus reporter gene in transgenic arabidopsis. | sweet potato is an important crop because of its high yield and biomass production. we herein investigated the potential of the promoter activity of a small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (rbcs) from sweet potato (ipomoea batatas) in order to develop the high expression system of exogenous dna in arabidopsis. we isolated two different cdnas (ibrbcs1 and ibrbcs2) encoding rbcs from sweet potato. their predicted amino acid sequences were well conserved with the mature r ... | 2015 | 25958348 |
| distributions, ex situ conservation priorities, and genetic resource potential of crop wild relatives of sweetpotato [ipomoea batatas (l.) lam., i. series batatas]. | crop wild relatives of sweetpotato [ipomoea batatas (l.) lam., i. series batatas] have the potential to contribute to breeding objectives for this important root crop. uncertainty in regard to species boundaries and their phylogenetic relationships, the limited availability of germplasm with which to perform crosses, and the difficulty of introgression of genes from wild species has constrained their utilization. here, we compile geographic occurrence data on relevant sweetpotato wild relatives ... | 2015 | 25954286 |
| expression of both cuznsod and apx in chloroplasts enhances tolerance to sulfur dioxide in transgenic sweet potato plants. | we have previously reported that transgenic sweet potato (ipomoea batatas) plants overexpressing both cuzn superoxide dismutase (cuznsod) and ascorbate peroxidase (apx) under the control of a stress-inducible swpa2 promoter in chloroplasts (referred to as ssa plants) showed increased resistance to methyl viologen-mediated oxidative stress and chilling. to investigate whether ssa plants show enhanced tolerance to air pollutants, they were exposed to 500ppb of sulfur dioxide (so2). so2 caused visi ... | 2015 | 25910434 |
| effect of nacl on in vitro propagation of sweet potato (ipomoea batatas l.). | in vitro propagation protocols offer a better option for production of quality planting materials in a clonal crop such as sweet potato, which is a food crop of versatile uses. propagation through axillary shoot proliferation and organogenic and embryogenic regeneration were studied in different genotypes of sweet potato. the addition of nacl enhanced the rate of multiplication as well as yielded hardy somatic embryos. optimal doses of nacl in each mode of propagation were different. the hardy s ... | 2015 | 12396143 |
| molecular characterization of five potyviruses infecting korean sweet potatoes based on analyses of complete genome sequences. | sweet potatoes (ipomea batatas l.) are grown extensively, in tropical and temperate regions, and are important food crops worldwide. in korea, potyviruses, including sweet potato feathery mottle virus (spfmv), sweet potato virus c (spvc), sweet potato virus g (spvg), sweet potato virus 2 (spv2), and sweet potato latent virus (splv), have been detected in sweet potato fields at a high (~95%) incidence. in the present work, complete genome sequences of 18 isolates, representing the five potyviruse ... | 2015 | 26673876 |
| synergistic interactions of begomoviruses with sweet potato chlorotic stunt virus (genus crinivirus) in sweet potato (ipomoea batatas l.). | three hundred and ninety-four sweet potato accessions from latin america and east africa were screened by polymerase chain reaction (pcr) for the presence of begomoviruses, and 46 were found to be positive. all were symptomless in sweet potato and generated leaf curling and/or chlorosis in ipomoea setosa. the five most divergent isolates, based on complete genome sequences, were used to study interactions with sweet potato chlorotic stunt virus (spcsv), known to cause synergistic diseases with o ... | 2015 | 25187172 |
| detection of sweet potato virus c, sweet potato virus 2 and sweet potato feathery mottle virus in portugal. | field sweet potato plants showing virus-like symptoms, as stunting, leaf distortion, mosaic and chlorosis, were collected in southwest portugal and tested for the presence of four potyviruses, sweet potato virus c (spvc), sweet potato virus 2 (spv2), sweet potato feathery mottle virus (spfmv), sweet potato virus g (spvg), and the crinivirus sweet potato chlorotic stunt virus (spcsv). dsrna fractions were extracted from symptomatic leaves and used as templates in single and multiplex rt-pcr assay ... | 2015 | 26104336 |
| control of sweet potato virus diseases. | sweet potato (ipomoea batatas) is ranked seventh in global food crop production and is the third most important root crop after potato and cassava. sweet potatoes are vegetative propagated from vines, root slips (sprouts), or tubers. therefore, virus diseases can be a major constrain, reducing yields markedly, often more than 50%. the main viruses worldwide are sweet potato feathery mottle virus (spfmv) and sweet potato chlorotic stunt virus (spcsv). effects on yields by spfmv or spcsv alone are ... | 2015 | 25591876 |
| direct utilization of purple sweet potato by sake yeasts to produce an anthocyanin-rich alcoholic beverage. | to produce an alcoholic beverage containing anthocyanins that can act as antioxidants and have anticarcinogenic activities and antihypertensive effects. | 2015 | 25778801 |
| suppression of rnai by dsrna-degrading rnaseiii enzymes of viruses in animals and plants. | certain rna and dna viruses that infect plants, insects, fish or poikilothermic animals encode class 1 rnaseiii endoribonuclease-like proteins. dsrna-specific endoribonuclease activity of the rnaseiii of rock bream iridovirus infecting fish and sweet potato chlorotic stunt crinivirus (spcsv) infecting plants has been shown. suppression of the host antiviral rna interference (rnai) pathway has been documented with the rnaseiii of spcsv and heliothis virescens ascovirus infecting insects. suppress ... | 2015 | 25747942 |
| a critical domain of sweet potato chlorotic fleck virus nucleotide-binding protein (nabp) for rna silencing suppression, nuclear localization and viral pathogenesis. | rna silencing is an important mechanism of antiviral defence in plants. to counteract this resistance mechanism, many viruses have evolved rna silencing suppressors. in this study, we analysed five proteins encoded by sweet potato chlorotic fleck virus (spcfv) for their abilities to suppress rna silencing using a green fluorescent protein (gfp)-based transient expression assay in nicotiana benthamiana line 16c plants. our results showed that a putative nucleotide-binding protein (nabp), but not ... | 2015 | 25138489 |
| toxic ipomeamarone accumulation in healthy parts of sweetpotato (ipomoea batatas l. lam) storage roots upon infection by rhizopus stolonifer. | furanoterpenoid accumulation in response to microbial attack in rotting sweetpotatoes has long been linked to deaths and lung edema of cattle in the world. however, it is not known whether furanoterpenoid ipomeamarone accumulates in the healthy-looking parts of infected sweetpotato storage roots. this is critical for effective utilization as animal feed and assessment of the potential negative impact on human health. therefore, we first identified the fungus from infected sweetpotatoes as a rhiz ... | 2015 | 25418792 |
| immunomodulatory and antioxidant effects of purple sweet potato extract in lp-bm5 murine leukemia virus-induced murine acquired immune deficiency syndrome. | the immunomodulatory effects of a dietary supplement of purple sweet potato extract (pspe) in lp-bm5 murine leukemia virus (mulv)-induced immune-deficient mice were investigated. mice were divided into six groups: normal control, infected control (lp-bm5 mulv infection), positive control (lp-bm5 mulv infection+dietary supplement of red ginseng 300 mg/kg), purple sweet potato water extract (pspwe) (lp-bm5 mulv infection+dietary supplement of pspe 300 mg/kg), psp10ee (lp-bm5 mulv infection+dietary ... | 2015 | 26076116 |
| resistance to ditylenchus destructor infection in sweet potato by the expression of small interfering rnas targeting unc-15, a movement-related gene. | stem nematode (ditylenchus destructor) is one of most serious diseases that limit the productivity and quality of sweet potato (ipomoea batatas), a root crop with worldwide importance for food security and nutrition improvement. hence, there is a global demand for developing sweet potato varieties that are resistant to the disease. in this study, we have investigated the interference of stem nematode infectivity by the expression of small interfering rnas (sirnas) in transgenic sweet potato that ... | 2015 | 26034810 |
| identification of novel isoprene synthases through genome mining and expression in escherichia coli. | isoprene is a naturally produced hydrocarbon emitted into the atmosphere by green plants. it is also a constituent of synthetic rubber and a potential biofuel. microbial production of isoprene can become a sustainable alternative to the prevailing chemical production of isoprene from petroleum. in this work, sequence homology searches were conducted to find novel isoprene synthases. candidate sequences were functionally expressed in escherichia coli and the desired enzymes were identified based ... | 2015 | 26275749 |
| production of 4-ipomeanol, an anticancer agent from the root tubers and rhizogenic callus of ipomoea batatas lam.: a comparative study. | a comparative study was done on the production of 4-ipomeanol from root tubers of ipomoea batatas and its rhizogenic callus. best callusing response was obtained on ms medium supplemented with 11 μm naa (α-naphthaleneacetic acid) and 1 μm kin (kinetin). effect of various elicitors (fusarium solani, chitin and chitosan) on the production of 4-ipomeanol was studied. methanol extract of the samples were purified by column chromatography and detected using tlc. identification of 4-ipomeanol was conf ... | 2015 | 26040027 |
| photo-biotechnology as a tool to improve agronomic traits in crops. | phytochromes are photosensory phosphoproteins with crucial roles in plant developmental responses to light. functional studies of individual phytochromes have revealed their distinct roles in the plant's life cycle. given the importance of phytochromes in key plant developmental processes, genetically manipulating phytochrome expression offers a promising approach to crop improvement. photo-biotechnology refers to the transgenic expression of phytochrome transgenes or variants of such transgenes ... | 2015 | 25532679 |
| non-invasive delivery of dsgst is lethal to the sweet potato whitefly, bemisia tabaci (g.) (hemiptera: aleyrodidae). | the sweet potato whitefly, bemisia tabaci (g.) biotype b (hemiptera: aleyrodidae), is one of the most economically important pest, by being a dreaded vector of geminiviruses, and also causes direct damage to the crops by sucking phloem sap. glutathione s-transferase (gst) is a large family of multifunctional enzymes that play pivotal roles in the detoxification of secondary allelochemical produced by the host plants and in insecticide resistance, thus regulates insect growth and development. the ... | 2015 | 25480347 |
| first report of bemisia tabaci mediterranean (q biotype) species in brazil. | the whitefly bemisia tabaci is a major cosmopolitan pest and comprises a complex of more than 36 cryptic species that cause serious damage to agricultural crops worldwide. in this study, the mediterranean species of b. tabaci, formerly known as q biotype, was identified for the first time in brazil. | 2015 | 25212515 |
| structural insights into substrate specificity of feruloyl-coa 6'-hydroxylase from arabidopsis thaliana. | coumarins belong to an important class of plant secondary metabolites. feruloyl-coa 6'-hydroxylase (f6'h), a 2-oxoglutarate dependent dioxygenase (2ogd), catalyzes a pivotal step in the biosynthesis of a simple coumarin scopoletin. in this study, we determined the 3-dimensional structure of the f6'h1 apo enzyme by x-ray crystallography. it is the first reported structure of a 2ogd enzyme involved in coumarin biosynthesis and closely resembles the structure of arabidopsis thaliana anthocyanidin s ... | 2015 | 25993561 |
| elevated compartmentalization of na+ into vacuoles improves salt and cold stress tolerance in sweet potato (ipomoea batatas). | salinity and low temperature are the main limiting factors for sweet potato (ipomoea batatas) growth and agricultural productivity. various studies have shown that plant nhx-type antiporter plays a crucial role in regulating plant tolerance to salt stress by intracellular na(+) compartmentalization. the arabidopsis thaliana atnhx1 gene that encodes a vacuolar na(+) /h(+) antiporter was introduced into the sweet potato cultivar xushu-22 by agrobacterium-mediated transformation to confer abiotic s ... | 2015 | 25307930 |
| the genome of cultivated sweet potato contains agrobacterium t-dnas with expressed genes: an example of a naturally transgenic food crop. | agrobacterium rhizogenes and agrobacterium tumefaciens are plant pathogenic bacteria capable of transferring dna fragments [transfer dna (t-dna)] bearing functional genes into the host plant genome. this naturally occurring mechanism has been adapted by plant biotechnologists to develop genetically modified crops that today are grown on more than 10% of the world's arable land, although their use can result in considerable controversy. while assembling small interfering rnas, or sirnas, of sweet ... | 2015 | 25902487 |
| statistical optimization of process parameters for exopolysaccharide production by aureobasidium pullulans using sweet potato based medium. | statistical experimental designs were applied to optimize the fermentation medium for exopolysaccharide (eps) production. plackett-burman design was applied to identify the significance of seven medium variables, in which sweet potato and yeast extract were found to be the significant variables for eps production. central composite design was applied to evaluate the optimum condition of the selected variables. maximum eps production of 9.3 g/l was obtained with the predicted optimal level of swe ... | 2015 | 28324414 |
| distinct gut microbiota of healthy children from two different geographic regions of thailand. | in thailand, food consumption by people from each region is different. this can be an important environmental factor which shapes the gut microbiota further affecting their health. this study aimed to use quantitative pcr (qpcr) to investigate the intestinal microbial community in 60 healthy children (aged 8-11 years) living in specific areas, namely central (ct) and northeastern (ne) thailand where each region has its own typical food consumption. the children from ne had significantly higher c ... | 2015 | 25644242 |
| assembling of holotrichia parallela (dark black chafer) midgut tissue transcriptome and identification of midgut proteins that bind to cry8ea toxin from bacillus thuringiensis. | holotrichia parallela is one of the most severe crop pests in china, affecting peanut, soybean, and sweet potato crops. previous work showed that cry8ea toxin is highly effective against this insect. in order to identify cry8ea-binding proteins in the midgut cells of h. parallela larvae, we assembled a midgut tissue transcriptome by high-throughput sequencing and used this assembled transcriptome to identify cry8ea-binding proteins by liquid chromatography-tandem mass spectrometry (lc-ms/ms). fi ... | 2015 | 26135984 |
| enhanced accumulation of carotenoids in sweetpotato plants overexpressing ibor-ins gene in purple-fleshed sweetpotato cultivar. | sweetpotato [ipomoea batatas (l.) lam] is an important root crop that produces low molecular weight antioxidants such as carotenoids and anthocyanin. the sweetpotato orange (ibor) protein is involved in the accumulation of carotenoids. to increase the levels of carotenoids in the storage roots of sweetpotato, we generated transgenic sweetpotato plants overexpressing ibor-ins under the control of the cauliflower mosaic virus (camv) 35s promoter in an anthocyanin-rich purple-fleshed cultivar (refe ... | 2015 | 25438140 |
| mitochondrial dna fragmentation as a molecular tool to monitor thermal processing of plant-derived, low-acid foods, and biomaterials. | cycle threshold (ct) increase, quantifying plant-derived dna fragmentation, was evaluated for its utility as a time-temperature integrator. this novel approach to monitoring thermal processing of fresh, plant-based foods represents a paradigm shift. instead of using quantitative polymerase chain reaction (qpcr) to detect pathogens, identify adulterants, or authenticate ingredients, this rapid technique was used to quantify the fragmentation of an intrinsic plant mitochondrial dna (mtdna) gene ov ... | 2015 | 26235411 |
| a lung oedema factor from mouldy sweet potatoes (ipomoea batatas). | 2015 | 4930474 | |
| molecular characterization of tocopherol biosynthetic genes in sweetpotato that respond to stress and activate the tocopherol production in tobacco. | tocopherol (vitamin e) is a chloroplast lipid that is presumed to be involved in the plant response to oxidative stress. in this study, we isolated and characterized five tocopherol biosynthetic genes from sweetpotato (ipomoea batatas [l.] lam) plants, including genes encoding 4-hydroxyphenylpyruvate dioxygenase (ibhppd), homogentisate phytyltransferase (ibhpt), 2-methyl-6-phytylbenzoquinol methyltransferase (ibmpbq mt), tocopherol cyclase (ibtc) and γ-tocopherol methyltransferase (ibtmt). fluor ... | 2016 | 27156136 |
| symbiotic n 2 -fixation estimated by the (15) n tracer technique and growth of pueraria phaseoloides (roxb.) benth. inoculated with bradyrhizobium strain in field conditions. | this field experiment was established in eastern cameroon to examine the effect of selected rhizobial inoculation on n2-fixation and growth of pueraria phaseoloides. treatments consisted of noninoculated and bradyrhizobium yuanmingense s3-4-inoculated pueraria with three replications each. ipomoea batatas as a non-n2-fixing reference was interspersed in each pueraria plot. all the twelve plots received 2 gn/m(2) of (15)n ammonium sulfate 10% atom excess. at harvest, dry matter yields and the nit ... | 2016 | 26904363 |
| synergistic effect of photosynthetic bacteria and isolated bacteria in their antifungal activities against root rot fungi. | antifungal bacteria (ab) in root rot fungus (rrf)-contaminated sweet potato farms were isolated, and seven strains were initially chosen as antagonistic candidates. an antagonistic test by using the mycelial disk placement method revealed that one ab strain by itself could inhibit the rrf growth. this ab strain was identified as bacillus polyfermenticus based on phylogeny of 16s ribosomal rna genes. two ab strains (bacillus aerophilus) displayed high levels of antifungal activity when paired wit ... | 2016 | 27667522 |
| biotype characterization, developmental profiling, insecticide response and binding property of bemisia tabaci chemosensory proteins: role of csp in insect defense. | chemosensory proteins (csps) are believed to play a key role in the chemosensory process in insects. sequencing genomic dna and rna encoding csp1, csp2 and csp3 in the sweet potato whitefly bemisia tabaci showed strong variation between b and q biotypes. analyzing csp-rna levels showed not only biotype, but also age and developmental stage-specific expression. interestingly, applying neonicotinoid thiamethoxam insecticide using twenty-five different dose/time treatments in b and q young adults s ... | 2016 | 27167733 |
| complete genome sequence of kosakonia sacchari strain bo-1, an endophytic diazotroph isolated from a sweet potato. | the complete genome sequence of the endophytic diazotroph kosakonia sacchari, isolated from a sweet potato, was analyzed. the 4,902,106-bp genome with 53.7% g+c content comprises 4,638 open reading frames, including nif genes, 84 trnas, and seven complete rrnas in a circular chromosome. | 2016 | 27609910 |