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Identification, Analysis, and Confirmation of Seed Storability-Related Loci in Dongxiang Wild Rice (Oryza rufipogon Griff.)

文献类型: 外文期刊

作者: Zhao, Minmin 1 ; Hu, Biaolin 2 ; Fan, Yuanwei 3 ; Ding, Gumu 1 ; Yang, Wanling 4 ; Chen, Yong 4 ; Chen, Yanhong 1 ; Xie, Jiankun 4 ; Zhang, Fantao 1 ;

作者机构: 1.Jiangxi Normal Univ, Coll Life Sci, Nanchang 330022, Jiangxi, Peoples R China

2.Jiangxi Acad Agr Sci, Rice Res Inst, Rice Natl Engn Lab, Nanchang 330022, Jiangxi, Peoples R China

3.Beijing Forestry Univ, Coll Biol Sci & Biotechnol, Beijing 100083, Peoples R China

4.Jiangxi Prov Key Lab Protect & Utilizat Subtrop P, Nanchang 330022, Jiangxi, Peoples R China

5.Washington Univ, Dept Biol, Campus Box 1137, St Louis, MO 63130 USA

6.Washington Univ, Ctr Engn Mechanobiol, Campus Box 1137, St Louis, MO 63130 USA

关键词: wild rice; seed storability; BSA-seq; genetic resource; rice improvement

期刊名称:GENES ( 影响因子:4.141; 五年影响因子:4.474 )

ISSN:

年卷期: 2021 年 12 卷 11 期

页码:

收录情况: SCI

摘要: Dongxiang wild rice (Oryza rufipogon Griff.) (DXWR) has strong seed storability and identifying its elite gene resources may facilitate genetic improvements in rice seed storability. In this study, we developed two backcross inbred lines (BILs) populations, with DXWR as a common donor parent and two rice varieties (F6 and R974) as recipient parents. Bulked segregant analysis via whole genome sequencing (BSA-seq) was used to identify seed storability-related loci in the DXWR and F6 population. Two main genomic regions containing 18,550,000-20,870,000 bp on chromosome 4 and 7,860,000-9,780,000 bp on chromosome 9 were identified as candidate loci of DXWR seed storability; these overlapped partially with seed storability-related quantitative trait loci (QTLs) discovered in previous studies, suggesting that these loci may provide important regions for isolating the responsible genes. In total, 448 annotated genes were predicted within the identified regions, of which 274 and 82 had nonsynonymous and frameshift mutations, respectively. We detected extensive metabolic activities and cellular processes during seed storability and confirmed the effects of the seed storability-related candidate loci using four BILs from DXWR and R974. These results may facilitate the cloning of DXWR seed storability-related genes, thereby elucidating rice seed storability and its improvement potential.

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