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sweet potato

Yuli Lin, Weikun Zou, Shiqiang Lin, Dennis Onofua, Zhijian Yang, Haizhou Chen, Songliang Wang, Xuanyang Chen
Sweet potato production is constrained by Fusarium wilt, which is caused by Fusarium oxysporum f. sp. batatas (Fob). The identification of genes related to disease resistance and the underlying mechanisms will contribute to improving disease resistance via sweet potato breeding programs. In the present study, we performed de novo transcriptome assembly and digital gene expression (DGE) profiling of sweet potato challenged with Fob using Illumina HiSeq technology. In total, 89,944,188 clean reads were generated from 12 samples and assembled into 101,988 unigenes with an average length of 666 bp; of these unigenes, 62,605 (61...
2017: PloS One
Sharon Evans, Anne Daly, Satnam Chahal, Catherine Ashmore, John MacDonald, Anita MacDonald
Background: In a previous case-control study, we demonstrated that children with PKU and non-PKU controls preferred sweet foods. Additionally, children with PKU exhibited food neophobia, with no preference for bitter tasting foods associated with the taste of phenylalanine (Phe)-free L-amino acid supplements. Objective: In an observational extension study, we evaluated the influence of parental food choice and neophobia on their children's taste preferences and food neophobia...
March 2018: Molecular Genetics and Metabolism Reports
Shengjun Xu, Cancan Jiang, Shuanglong Ma, Shanghua Wu, Zhihui Bai, Guoqiang Zhuang, Xuliang Zhuang
A conventional anaerobic baffled reactors (ABRs) treating high strength sweet potato starch wastewater at ambient temperatures resulted in acidification and bad performances. After modification, the acidification was remitted and COD removal efficiencies reached 92.73% at high temperatures and were maintained at 71.19% at low temperatures. Moreover, as much as 1.014 ± 0.056 L CH4/L/d were collected at Stage III. The q-PCR results revealed that the largest methanogen populations emerged at Stage III as well, which was 5...
November 7, 2017: Scientific Reports
Gicele S De Bona, Wiliam Boschetti, Rafael C Bortolin, Maria G R Vale, José C F Moreira, Alessandro O de Rios, Simone H Flôres
The aim of this study was to evaluate the nutritional content and antioxidant capacity of the tubers, leaves and, flowers of the species Tropaeolum pentaphyllum Lam. The three parts of the plant were analyzed by physicochemical methods, atomic absorption spectrometry, spectrophotometric and chromatographic techniques. The tubers, leaves, and flowers exhibited significant differences in all parameters evaluated. The leaves showed significantly higher values of protein (16.28 ± 0.02 g/100 g), total dietary fiber (27...
October 2017: Journal of Food Science and Technology
Candice Mazewski, Katie Liang, Elvira Gonzalez de Mejia
The objective was to compare the anti-proliferative effect of anthocyanin-rich plant extracts on human colon cancer cells and determine their mechanism of action. Eleven extracts were tested: red (RG) and purple grape, purple sweet potato, purple carrot, black and purple bean, black lentil (BL), black peanut, sorghum (SH), black rice, and blue wheat. HCT-116 and HT-29 inhibition correlated with total phenolics (r=0.87 and 0.77, respectively), delphinidin-3-O-glucoside concentration with HT-29 inhibition (r=0...
March 1, 2018: Food Chemistry
Elise F Talsma, Alida Melse-Boonstra, Inge D Brouwer
Biofortification of staple crops is a promising strategy for increasing the nutrient density of diets in order to improve human health. The willingness of consumers and producers to accept new crop varieties will determine whether biofortification can be successfully implemented. This review assessed sensory acceptance and adoption of biofortified crops and the determining factors for acceptance and adoption among consumers and producers in low- and middle-income countries. PubMed, Scopus, and Web of Science were searched for published reports...
October 1, 2017: Nutrition Reviews
Huiping Bi, Weijuan Fan, Peng Zhang
Sweepoviruses have been identified globally and cause substantial yield losses and cultivar decline in sweet potato. This study aimed to investigate the interaction between sweepovirus and plant host by analyzing the function of the viral protein C4 of Sweet potato leaf curl virus-Jiangsu (SPLCV-JS), a sweepovirus cloned from diseased sweet potato plants in East China. Ectopic expression of the C4 in Arabidopsis altered plant development drastically with phenotypic changes including leaf curling, seedling twisting, deformation of floral tissues and reduction of pollen fertility, and seed number...
2017: Frontiers in Plant Science
Jin-Hee Kim, Il Kyung Chung, Kyung-Min Kim
The Sweet potato, Ipomoea batatas (L.) Lam, is difficult to study in genetics and genomics because it is a hexaploid. The sweet potato study not have been performed domestically or internationally. In this study was performed to construct genetic map and quantitative trait loci (QTL) analysis. A total of 245 EST-SSR markers were developed, and the map was constructed by using 210 of those markers. The total map length was 1508.1 cM, and the mean distance between markers was 7.2 cM. Fifteen characteristics were investigated for QTLs analysis...
2017: PloS One
Khalid Asadi, Lynnette R Ferguson, Martin Philpott, Nishi Karunasinghe
BACKGROUND: Anthocyanin-rich foods and preparations have been reported to reduce the risk of life-style related diseases, including cancer. The SL222 sweet potato, a purple-fleshed cultivar developed in New Zealand, accumulates high levels of anthocyanins in its storage root. METHODS: We examined the chemopreventative properties of the SL222 sweet potato in the C57BL/6J-APC (MIN/+) (APC(MIN)) mouse, a genetic model of colorectal cancer. APC(MIN) and C57BL/6J wild-type mice (n=160) were divided into four feeding groups consuming diets containing 10% SL222 sweet potato flesh, 10% SL222 sweet potato skin, or 0...
September 2017: Journal of Cancer Prevention
Jaedeok Kim, Jung Wook Yang, Hae-Ryun Kwak, Mi-Kyeong Kim, Jang-Kyun Seo, Mi-Nam Chung, Hyeong-Un Lee, Kyeong-Bo Lee, Sang Sik Nam, Chang-Seok Kim, Gwan-Seok Lee, Jeong-Soo Kim, Sukchan Lee, Hong-Soo Choi
A nationwide survey was performed to investigate the current incidence of viral diseases in Korean sweet potatoes for germplasm and growing fields from 2011 to 2014. A total of 83.8% of the germplasm in Korea was infected with viruses in 2011. Commercial cultivars that were used to supply growing fields were infected at a rate of 62.1% in 2012. Among surveyed viruses, the incidence of five Potyvirus species that infect sweet potato decreased between 2012 and 2013, and then increased again in 2014. Representatively, the incidence of Sweet potato feathery mottle virus (SPFMV) was 87...
October 2017: Plant Pathology Journal
Hoang Lam Dang, Renlong Lv, Taketo Obitsu, Toshihisa Sugino
This study aimed to investigate the effects of replacing alfalfa hay (AH) with a mixture of cassava foliage silage and sweet potato vine silage (CSP) (1:1 on a dry matter (DM) basis) on ruminal and intestinal nutrient digestion in sheep. Four wethers were fed a control diet containing 35% of AH and two treatment diets containing 15% and 30% of the CSP as substitute for AH at 1.5 times the metabolizable energy required for maintenance. Replacing AH with the CSP silage did not affect DM intake, whereas it linearly increased (P < 0...
October 9, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
Feitong Wu, Karen Wills, Laura L Laslett, Brian Oldenburg, Graeme Jones, Tania Winzenberg
Influences of dietary patterns on musculoskeletal health are poorly understood in middle-aged women. This cross-sectional analysis from a cohort of 347 women (aged 36-57 years) aimed to examine associations between dietary patterns and musculoskeletal health outcomes in middle-aged women. Diet was measured by the Cancer Council of Victoria FFQ. Total body bone mineral content (TB BMC), femoral neck and lumbar spine bone density (dual-energy X-ray absorptiometry), lower limbs muscle strength (LMS) and balance tests (timed up and go test, step test, functional reach test (FRT) and lateral reach test) were also measured...
October 2017: British Journal of Nutrition
Shengjun Xu, Sining Zhou, Shuanglong Ma, Cancan Jiang, Shanghua Wu, Zhihui Bai, Guoqiang Zhuang, Xuliang Zhuang
With the increasing use of chemical fertilizers, negative environmental impacts have greatly increased as a result from agricultural fields. The fungus Trichoderma viride used as a biofertilizer can efficiently reduce nitrous oxide (N2O) emissions from subtropical tea fields in southern China. In this paper, it was further found that T. viride biofertilizer could alleviate nitrogen (N) leaching in tea fields. Gross N leaching was 1.51 kg ha(-1) year(-1) with no external fertilizer input, but when 225 kg N ha(-1) year(-1)was applied, it increased to 12...
October 6, 2017: Environmental Science and Pollution Research International
Patricia Sakala, Ernesta Kunneke, Mieke Faber
BACKGROUND: The Integrating Orange Project promotes production and consumption of orange-fleshed sweet potato (OFSP) to address vitamin A deficiency among rural populations of Zambia since 2011. OBJECTIVE: This study assessed household production and consumption of OFSP and identified factors associated with consumption thereof in Integrating Orange Project areas in Chipata district, Zambia. METHODS: Respondents of 295 randomly selected households were interviewed using a structured questionnaire during the sweet potato harvest season...
January 1, 2017: Food and Nutrition Bulletin
Johann M R Antoine, Leslie A Hoo Fung, Charles N Grant
Thirteen Jamaican-grown food crops - ackee (Blighia sapida), banana (Musa acuminate), cabbage (Brassica oleracea), carrot (Daucus carota), cassava (Manihot esculenta), coco (Xanthosoma sagittifolium), dasheen (Colocasia esculenta), Irish potato (Solanum tuberosum), pumpkin (Cucurbita pepo), sweet pepper (Capsicum annuum), sweet potato (Ipomoea batatas), tomato (Solanum lycopersicum) and turnip (Brassica rapa) - were analysed for aluminium, arsenic, cadmium and lead by atomic absorption spectrophotometry and instrumental neutron activation analysis...
2017: Toxicology Reports
Chun-Li Luo, Qing Zhou, Zi-Wei Yang, Rui-Dan Wang, Jiu-Liang Zhang
In order to figure out the key acylated anthocyanin compounds accounting for the bioprotective activity of purple sweet potato (Ipomoea batatas L.), ODS packing column, semi-preparative HPLC method, activity evaluation assays, and ultra-high-performance liquid chromatography with quadrupole time-of-flight tandem mass spectrometry (UPLC-QTOF-MS) assays were employed. Additionally, our study revealed that the structures of two acylated monomeric anthocyanins, cyanidin 3-caffeoyl-feruloyl sophoroside-5-glucoside and peonidin 3-dicaffeoyl sophoroside-5-glucoside were found to have the strongest bioprotective activity, which was identified to be closely related with the ortho-dihydroxybenzene structure, suggesting the more the special structures of catechol moieties, such as caffeoyl and cyanidin, the stronger the bioprotective activity will be...
February 15, 2018: Food Chemistry
Rafaela S Fontenele, Dione M T Alves-Freitas, Pedro I T Silva, Josemar Foresti, Paulo R Silva, Márcio T Godinho, Arvind Varsani, Simone G Ribeiro
The genus Mastrevirus (family Geminiviridae) is composed of single-stranded DNA viruses that infect mono- and dicotyledonous plants and are transmitted by leafhoppers. In South America, there have been only two previous reports of mastreviruses, both identified in sweet potatoes (from Peru and Uruguay). As part of a general viral surveillance program, we used a vector-enabled metagenomics (VEM) approach and sampled leafhoppers (Dalbulus maidis) in Itumbiara (State of Goiás), Brazil. High-throughput sequencing of viral DNA purified from the leafhopper sample revealed mastrevirus-like contigs...
September 27, 2017: Archives of Virology
Xuefeng Wu, Hongli Yao, Xinmin Cao, Qing Liu, Lili Cao, Dongdong Mu, Shuizhong Luo, Zhi Zheng, Shaotong Jiang, Xingjiang Li
Acetobacter pasteurianus JST-S was screened from solid fermented grains of vinegar in China, identified by molecular analysis, and used for the production of purple sweet potato vinegar using purple sweet potato as the substrate. By orthogonal experiment, maximum total acid concentration (4.26% [v/v]) was achieved under optimized conditions as follows: fermentation time, 3.5 days; ethanol content, 9% v/v; and inoculum size, 8% v/v. During the production of purple potato vinegar, the anthocyanin concentration decreased from 652...
October 2017: 3 Biotech
Erich Y T Nakasu, Fernando L Melo, Miguel Michereff-Filho, Tatsuya Nagata, Bergmann M Ribeiro, Simone G Ribeiro, Cristiano Lacorte, Alice K Inoue-Nagata
The complete genome sequences of two novel small circular DNA viruses isolated from sweet-potato whiteflies collected in Central-West (AdDF) and Southeast (AdO) regions of Brazil were determined by Next Generation Sequencing (NGS), and confirmed by cloning and Sanger sequencing. The genomes are 2,199 and 2,211 nt-long, respectively, encoding a putative coat protein (CP) and a replication-associated protein (Rep) and showing a genomic organization typical of viruses from the family Genomoviridae. Phylogenetic analysis with deduced amino acid sequences of Rep indicates that the virus from AdO is closely related to other members of the genus Gemycircularvirus, while the virus from AdDF is related to those of the genus Gemyduguivirus...
November 2017: Archives of Virology
Duqin Zhang, Taihua Mu, Hongnan Sun
We investigated the effect of wheat (WS), corn (CS), tapioca (TS), sweet potato (SS) and potato (PS) starches on the rheological properties of starch-hydroxypropylmethylcellulose (HPMC) model doughs. Significant differences were found among model doughs made with different starches in terms of water absorption, development time, and strength. The PS-HPMC dough presented higher maximum creep compliance, followed successively by SS-, TS-, CS-, and WS-HPMC doughs, and the same order was found for the degree of dependence of G' on frequency sweep, suggesting that the resistance to deformation depends on network structure stability...
November 15, 2017: Carbohydrate Polymers
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