ArticleGenes & genomics2020
Identifying genes for resistant starch, slowly digestible starch, and rapidly digestible starch in rice using genome-wide association studies.
Article in Genes & genomics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 15 citations in OpenAlex.
- A Comprehensive Review of Starches From Diverse Millets: Composition, Structure, Functionality, and Strategies for Genetic Improvement.Comprehensive reviews in food science and food safety · 2026Review
- Unlocking Low-glycemic Potential in Rice: Genetic Insights and Breeding Strategies.Plant foods for human nutrition (Dordrecht, Netherlands) · 2026Review
- Genome-Wide Association Study of Starch Properties in Local Thai Rice.Plants (Basel, Switzerland) · 2023Article
- Genotype-by-environment interactions for starch, mineral, and agronomic traits in pearl millet hybrids evaluated across five locations in West Africa.Frontiers in plant science · 2023Article
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundThe digestibility of starch is important for the nutritive value of staple food. Although several genes are responsible for resistant starch (RS) and slowly digestible starch (SDS), gaps persist concerning the molecular basis of RS and SDS formation due to the complex genetic mechanisms of starch digestibility.
objectivesThe objective of this study was to identify new genes for starch digestibility in rice and interprete the genetic mechanisms of RS and SDS by GWAS.
methodsGenome-wide association studies were conducted by associating the RS and SDS phenotypes of 104 re-sequenced rice lines to an SNP dataset of 2,288,867 sites using a compressed mixed linear model. Candidate genes were identified according to the position of the SNPs based on data from the MSU Rice Genome Annotation Project.
resultsSeven quantitative trait loci (QTLs) were detected to be associated with the RS content, among which the SNP 6 m1765761 was located on Waxy. Starch branching enzymes IIa (BEIIa) close to QTL qRS-I4 was detected and further identified as a specific candidate gene for RS in INDICA. Two QTLs were associated with SDS, and the LOC_Os09g09360 encoding lipase was identified as a causal gene for SDS.
conclusionsGWAS is a valid strategy to genetically dissect the formation of starch digestion properties in rice. RS formation in grains is dependent on the rice type; lipid might also contribute to starch digestibility and should be an alternative factor to improve rice starch digestibility.
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