Unveiling the Genetic Basis Underlying Rice Anther Culturability via Segregation Distortion Analysis in Doubled Haploid Population
文献类型： 外文期刊
作者： Sun, Bin 1 ; Ding, Xiaorui 3 ; Ye, Junhua 1 ; Dai, Yuting 1 ; Cheng, Can 1 ; Zhou, Jihua 1 ; Niu, Fuan 1 ; Tu, Rongjian 1 ; Hu, Qiyan 4 ; Xie, Kaizhen 5 ; Qiu, Yue 3 ; Li, Hongyu 4 ; Feng, Zhizun 6 ; Shao, Chenbing 5 ; Cao, Liming 1 ; Zhang, Anpeng 2 ; Chu, Huangwei 1 ;
作者机构： 1.Coconstruct Minist & Prov, Minist Agr & Rural Affairs, Crop Breeding & Cultivat Res Inst, Key Lab Germplasm Innovat & Genet Improvement Grai, Shanghai 201403, Peoples R China
2.Shanghai Acad Agr Sci, Shanghai Key Lab Agr Genet & Breeding, Shanghai 201106, Peoples R China
3.Shanghai Normal Univ, Coll Life Sci, Dev Ctr Plant Germplasm Resources, Shanghai 200234, Peoples R China
4.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
5.Jiangxi Agr Univ, Coll Agron, MOE Key Lab Crop Physiol Ecol & Genet Breeding, Nanchang 330045, Peoples R China
6.Shanxi Agr Univ, Coll Agron, Jinzhong 030801, Peoples R China
关键词： anther culture; doubled haploid; rice; segregation distortion
期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）
ISSN：
年卷期： 2023 年 14 卷 11 期
页码：
收录情况： SCI
摘要： Anther culture (AC) is a valuable technique in rice breeding. However, the genetic mechanisms underlying anther culturability remain elusive, which has hindered its widespread adoption in rice breeding programs. During AC, microspores carrying favorable alleles for AC are selectively regenerated, leading to segregation distortion (SD) of chromosomal regions linked to these alleles in the doubled haploid (DH) population. Using the AC method, a DH population was generated from the japonica hybrid rice Shenyou 26. A genetic map consisting of 470 SNPs was constructed using this DH population, and SD analysis was performed at both the single- and two-locus levels to dissect the genetic basis underlying anther culturability. Five segregation distortion loci (SDLs) potentially linked to anther culturability were identified. Among these, SDL5 exhibited an overrepresentation of alleles from the female parent, while SDL1.1, SDL1.2, SDL2, and SDL7 displayed an overrepresentation of alleles from the male parent. Furthermore, six pairs of epistatic interactions (EPIs) that influenced two-locus SDs in the DH population were discovered. A cluster of genetic loci, associated with EPI-1, EPI-3, EPI-4, and EPI-5, overlapped with SDL1.1, indicating that the SDL1.1 locus may play a role in regulating anther culturability via both additive and epistatic mechanisms. These findings provide valuable insights into the genetic control of anther culturability in rice and lay the foundation for future research focused on identifying the causal genes associated with anther culturability.
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