Proceedings of the Korean Society of Crop Science Conference (한국작물학회:학술대회논문집)

The Korean Society of Crop Science (한국작물학회)
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Selective Allele Stacking of a Novel Quantitative Trait Locus Facilitates the Enhancement of Seed Epicatechin Contents in Soybean (Glycine max (L.) Merr.)

  • Sewon Park (Department of Agriculture, Agricultural Genomics, Seoul National University) ;
  • Hakyung Kwon (Department of Agriculture, Forestry and Bioresources and Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Jae Ah Choi (Department of Agriculture, Forestry and Bioresources and Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Moon Young Kim (Department of Agriculture, Forestry and Bioresources and Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Suk-Ha Lee (Department of Agriculture, Forestry and Bioresources and Research Institute of Agriculture and Life Sciences, Seoul National University)
  • Published : 2022.10.13
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Abstract

(-)-Epicatechin (EC), a primary form of flavan-3ol and a building block of proanthocyanidins, has health benefits as it is a potent antioxidant. So far, no quantitative trait loci (QTLs) associated with EC have yet been identified in soybean. In this study, QTLs for EC and hilum color were identified in recombinant inbred lines (RILs) derived from the varieties Jinpung and IT109098 using high-resolution single nucleotide polymorphism linkage mapping. This revealed two major QTLs for EC content, qEC06 and qEC08. qEC06 spanned the T Locus encoding flavonoid 3'-hydroxylase. qEC08, located near the I locus on Chr08, was also a major QTL for hilum color; however, allelic stacking of qEC08 and I revealed no relationship between I and EC content. RILs with IT 109098 alleles at both qEC06 and qEC08 had higher EC content than other lines. These results will enable the production of soybean varieties with high EC content via marker-assisted selection.

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Acknowledgement

Funding: This work was carried out with the support of "Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01582901)" Rural Development Administration, Republic of Korea.