Chinese yam (Dioscorea): Nutritional value, beneficial effects, and food and pharmaceutical applications

Trends in Food Science & Technology, Journal Year: 2023, Volume and Issue: 134, P. 29 - 40

Published: Feb. 24, 2023

Language: Английский

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An underutilized orphan tuber crop—Chinese yam : a review

Planta, Journal Year: 2020, Volume and Issue: 252(4)

Published: Sept. 21, 2020

The diversification of food crops can improve our diets and address the effects climate change, in this context orphan crop Chinese yam shows significant potential as a functional food. As change become increasingly visible even temperate regions, there is an urgent need to diversify order hunger malnutrition. This has led re-evaluation neglected species such (Dioscorea polystachya Turcz.), which been cultivated for centuries East Asia widely-used ingredient traditional medicine. tubers are rich nutrients, but also contain bioactive metabolites resistant starches, steroidal sapogenins (like diosgenin), storage protein dioscorin, mucilage polysaccharides. These health-promoting products help prevent cardiovascular disease, diabetes, disorders gut microbiome. Whereas most edible yams tropical species, could be widely Europe other regions take advantage its nutritional properties. However, laborious process agronomic knowledge fragmented. underground starch, vulnerable breaking thus difficult harvest. Breeding tuber shape complex given dioecious nature mostly vegetative reproduction via bulbils, presence more than 100 chromosomes. Protocols have yet established vitro cultivation genetic transformation, limits scope research. article summarizes sparse research landscape evaluates medical applications yam. By highlighting tubers, we aim encourage adoption novel

Language: Английский

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Chromosome evolution and the genetic basis of agronomically important traits in greater yam

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: April 14, 2022

The nutrient-rich tubers of the greater yam, Dioscorea alata L., provide food and income security for millions people around world. Despite its global importance, however, yam remains an orphan crop. Here, we address this resource gap by presenting a highly contiguous chromosome-scale genome assembly D. combined with dense genetic map derived from African breeding populations. sequence reveals ancient allotetraploidization in lineage, followed extensive genome-wide reorganization. Using genomic tools, find quantitative trait loci resistance to anthracnose, damaging fungal pathogen several tuber quality traits. Genomic analysis lines both inbreeding as well regions heterozygosity that may represent interspecific introgression during domestication. These tools insights will enable breeders unlock potential staple crop take full advantage adaptability varied environments.

Language: Английский

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Genome Editing for Sustainable Agriculture in Africa

Frontiers in Genome Editing, Journal Year: 2022, Volume and Issue: 4

Published: May 12, 2022

Sustainable intensification of agriculture in Africa is essential for accomplishing food and nutritional security addressing the rising concerns climate change. There an urgent need to close yield gap staple crops enhance production feed growing population. In order meet increasing demand food, more efficient approaches produce are needed. All tools available toolbox, including modern biotechnology traditional, be applied crop improvement. The full potential new breeding such as genome editing needs exploited addition conventional technologies. Clustered regularly interspaced short palindromic repeats/CRISPR-associated protein (CRISPR/Cas)-based has rapidly become most prevalent genetic engineering approach developing improved varieties because its simplicity, efficiency, specificity, easy use. Genome improves variety by modifying endogenous free any foreign gene. Hence, genome-edited with no gene integration not regulated genetically modified organisms (GMOs) several countries. Researchers using CRISPR/Cas-based improving African biotic abiotic stress resistance quality. Many products, disease-resistant banana, maize resistant lethal necrosis, sorghum parasitic plant Striga enhanced quality, under development farmers. a creating enabling environment science-based regulatory guidelines release adoption products developed CRISPR/Cas9-mediated editing. Some progress been made this regard. Nigeria Kenya have recently published national biosafety regulation This article summarizes recent advances developments tools, applications crops, policies Africa.

Language: Английский

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Genome analyses reveal the hybrid origin of the staple crop white Guinea yam ( Dioscorea rotundata )

Proceedings of the National Academy of Sciences, Journal Year: 2020, Volume and Issue: 117(50), P. 31987 - 31992

Published: Dec. 2, 2020

Significance Guinea yam is an important staple tuber crop in West Africa, where it contributes to the sustenance and sociocultural lives of millions people. Understanding genetic diversity its relationships with wild relatives for improving this using genomic information. A recent genomics study proposed that originated from a relative, rainforest species Dioscorea praehensilis . Our results based on sequencing 336 accessions do not support notion; rather, our indicate hybrid origin rotundata crosses between savannah abyssinica D. praehensilis.

Language: Английский

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Multi-Trait Selection Index for Simultaneous Selection of Water Yam (Dioscorea alata L.) Genotypes

Agronomy, Journal Year: 2024, Volume and Issue: 14(1), P. 128 - 128

Published: Jan. 3, 2024

Water yam (Dioscorea alata L.) is the most widely cultivated species with good agronomic attributes. However, several biotic and abiotic constraints its lower food quality such as poor pound ability limit production use. Therefore, identification of superior genotypes suitable characteristics needed for water improvement. This study aims to assess a panel half-sib (progenies one parent in common) full-sib same male female parents) progenies well their parents selection desirable ideotypes based on characteristics. A total 280 from bi-parental populations five were evaluated, significant variation was observed (p < 0.01) performances eight traits used study. moderate high broad-sense heritability (30% H2–H2 ≥ 60%) all except tuber (H2 30%). Positive correlations displayed between traits, while hierarchical clustering grouped into three clusters indicating potential diverse multiple four families under Plant vigor number tubers per plant contributed positively yield path coefficient analysis. Using multi-trait genotype–ideotype distance index (MGIDI), 39 promising identified. These could be further progenitors D. improvement programs targeting targeted farmers end users.

Language: Английский

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Genome-Wide Association Studies for Sex Determination and Cross-Compatibility in Water Yam (Dioscorea alata L.)

Plants, Journal Year: 2021, Volume and Issue: 10(7), P. 1412 - 1412

Published: July 10, 2021

Yam (

Language: Английский

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Identification of yam mosaic virus as the main cause of yam mosaic diseases in Ethiopia

Heliyon, Journal Year: 2024, Volume and Issue: 10(5), P. e26387 - e26387

Published: Feb. 15, 2024

Yam (Dioscorea spp.) is a staple food crop with cultural, nutritional and economic significance for millions of small-scale farmers in sub-Saharan Africa. While various virus-like symptoms such as mosaic chlorosis are frequently observed yam fields Ethiopia, little information available on the prevalence, distribution, molecular characteristics viruses causing these symptoms. The aim this study was to investigate incidence distribution determine primary cause diseases (YMD) Ethiopia. Both symptomatic (n = 280) asymptomatic 110) leaf samples were collected tested potyviruses using ACP‐ELISA. In addition, screened virus (YMV), mild (YMMV), cucumber (CMV) by DAS-ELISA. Subsequently, total RNA extracted from 130 comprising 94 36 representing different areas. representative RT-PCR amplicons 6) Sanger sequenced. ACP-ELISA DAS-ELISA results showed 9.2%, 12.9% YMV infection, respectively, while analysis 28.5% positivity rate. CMV YMMV not detected any tested. Thus, confirmed YMD isolates Ethiopia shared 92–93% nucleotide identity among themselves 85–99% other GenBank. Phylogenetic revealed that South America, west-central Africa have most recent common ancestor, China Japan clustered sister groups. This enhances our understanding YMV's genetic diversity provides valuable regarding first report

Language: Английский

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Molecular mechanism for the influence of yam starch multiscale structure on the sensory texture of cooked yam

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 271, P. 132572 - 132572

Published: May 21, 2024

Language: Английский

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Floral Biology and Pollination Efficiency in Yam (Dioscorea spp.)

Agriculture, Journal Year: 2020, Volume and Issue: 10(11), P. 560 - 560

Published: Nov. 20, 2020

Yam (Dioscorea spp.) is a monocotyledonous herbaceous vine cultivated for its starchy underground or aerial tubers in the tropics and subtropics. It an allogamous polyploid species that reproduces by both sexual asexual mechanisms. However, many of landrace cultivars, including most popular varieties, reproduce exclusively vegetative propagation (planting tubers). These varieties are either sterile produce sparse irregular flowering with high flower abortion rate, low fruit seed set. Production crossbreed seeds genetic improvement maintaining diversity yams is, therefore, mainly achieved through natural managed pollination. Flowering yam mostly dioecious and, some instances, monoecious. asynchrony, sticky nature pollen grains, cross incompatibility among challenges making progress breeding. There limitations basic applied knowledge biology This paper, reviews biology, pollination, methods improving pollination efficiency breeding programs.

Language: Английский

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