全基因组关联研究揭示了全球水稻核心种质种子耐贮性的数量性状位点。

Genome-Wide Association Study Reveals the QTLs for Seed Storability in World Rice Core Collections.

作者信息

Wu Fangxi, Luo Xi, Wang Lingqiang, Wei Yidong, Li Jianguo, Xie Huaan, Zhang Jianfu, Xie Guosheng

机构信息

Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350019, China.

MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.

出版信息

Plants (Basel). 2021 Apr 20;10(4):812. doi: 10.3390/plants10040812.

Seed storability is a main agronomically important trait to assure storage safety of grain and seeds in rice. Although many quantitative trait loci (QTLs) and associated genes for rice seed storability have been identified, the detailed genetic mechanisms of seed storability remain unclear in rice. In this study, a genome-wide association study (GWAS) was performed in 456 diverse rice core collections from the 3K rice genome. We discovered the new nine QTLs designated as , , , , , , , , and . According to the analysis of the new nine QTLs, our results could well explain the reason why seed storability of subspecies was superior to subspecies in rice. Among them, and were potentially co-localized with a known associated / and , respectively. Our results also suggest that pyramiding breeding of superior alleles of these associated genes will lead to new varieties with improved seed storability in the future.

种子耐贮性是确保水稻谷物和种子贮藏安全的一个主要农学重要性状。尽管已经鉴定出许多与水稻种子耐贮性相关的数量性状位点（QTL）和相关基因，但水稻种子耐贮性的详细遗传机制仍不清楚。在本研究中，对来自3K水稻基因组的456份不同水稻核心种质进行了全基因组关联研究（GWAS）。我们发现了9个新的QTL，分别命名为、、、、、、、和。根据对这9个新QTL的分析，我们的结果能够很好地解释为什么水稻中籼稻亚种的种子耐贮性优于粳稻亚种。其中，和可能分别与一个已知相关基因/和共定位。我们的结果还表明，这些相关基因优良等位基因的聚合育种未来将培育出种子耐贮性得到改善的新品种。