ArticleBMC genomics2024
Whole-genome sequencing and comparative genomics reveal candidate genes associated with quality traits in Dioscorea alata.
Article in BMC genomics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 12 citations in OpenAlex.
- Haplotype-resolved genome assembly of a male Dioscorea alata cultivar reveals the structure and evolution of young sex chromosomes.The Plant journal : for cell and molecular biology · 2026Article
- Genome-wide association study revealed genomic regions associated with tuber quality traits in water yam (Dioscorea alata L.).PloS one · 2026Article
- A telomere-to-telomere genome assembly for greater yam (Dioscorea alata).Plant communications · 2025Article
- Genome-wide association analysis and transgenic characterization for amylose content regulating gene in tuber of Dioscorea zingiberensis.BMC plant biology · 2024Article
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
Abstract
backgroundQuality traits are essential determinants of consumer preferences. Dioscorea alata (Greater Yam), is a starchy tuber crop in tropical regions. However, a comprehensive understanding of the genetic basis underlying yam tuber quality remains elusive. To address this knowledge gap, we employed population genomics and candidate gene association approaches to unravel the genetic factors influencing the quality attributes of boiled yam. METHODS AND
resultsComparative genomics analysis of 45 plant species revealed numerous novel genes absent in the existing D. alata gene annotation. This approach, adding 48% more genes, significantly enhanced the functional annotation of three crucial metabolic pathways associated with boiled yam quality traits: pentose and glucuronate interconversions, starch and sucrose metabolism, and flavonoid biosynthesis. In addition, the whole-genome sequencing of 127 genotypes identified 27 genes under selection and 22 genes linked to texture, starch content, and color through a candidate gene association analysis. Notably, five genes involved in starch content and cell wall composition, including 1,3-beta Glucan synthase, β-amylase, and Pectin methyl esterase, were common to both approaches and their expression levels were assessed by transcriptomic data.
conclusionsThe analysis of the whole-genome of 127 genotypes of D. alata and the study of three specific pathways allowed the identification of important genes for tuber quality. Our findings provide insights into the genetic basis of yam quality traits and will help the enhancement of yam tuber quality through breeding programs.
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