Identification and functional characterization of Si4CLL1 controlling the male sterility in the sesame genic male sterile mutant, ms1812
文献类型： 外文期刊
作者： Guo, Qiuyue 1 ; Miao, Hongmei 1 ; Li, Chun 1 ; Duan, Yinghui 1 ; Ju, Ming 1 ; Ma, Qin 1 ; Wang, Huili 1 ; Zhang, Haiyang 1 ;
作者机构： 1.Zhengzhou Univ, Henan Acad Agr Sci, Henan Sesame Res Ctr, Postgrad T&R Base, Zhengzhou, Peoples R China
2.Zhengzhou Univ, Sch Agr Sci, Zhengzhou, Peoples R China
3.Henan Acad Agr Sci, Henan Sesame Res Ctr, Henan Key Lab Specif Oilseed Crops Genom, Zhengzhou, Peoples R China
4.Shennong Lab, Zhengzhou, Peoples R China
5.Henan Acad Agr Sci, Henan Sesame Res Ctr, Zhengzhou 450002, Henan, Peoples R China
期刊名称：CROP SCIENCE （ 影响因子：2.3； 五年影响因子：2.5 ）
ISSN： 0011-183X
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Sesame (Sesamum indicum L.), 2n = 2x = 26, is an important oilseed crop with high heterosis potential. In this study, we explored the histological and genetic characters and causal gene of a male sterile sesame mutant, ms1812 (ms3). The microspore abortion of ms1812 that led to male sterility (MS) occurred at the tetrad stage of microspore development. No normal pollens were formed and observed in anther chambers of ms1812 at the microspore mature stage. With the aid of high-efficient association mapping and the sesame var. Yuzhi 11 reference genome, we identified the single nucleotide polymorphism 10505640 on SiChr.3 segregating with the MS and the mutated gene, Si4cll1, controlling the recessive MS in sesame. Si4CLL1 encodes a 4-coumarate-CoA ligase-like protein. The 1292th nucleotide (T1292) of Si4CLL1 mutated into A1292, resulting in the amino acid change from Ile239 to Lys239. Si4CLL1 is mainly expressed in young developing buds. Compared with the wild type, the transcript abundance of Si4cll1 in the developing buds of ms1812 reduced significantly, which might affect the phenylpropanoid biosynthesis pathway and finally, the lignin formation of microspore cell wall. These findings provide key new information for deciphering the molecular mechanism underlying MS and hybrid variety breeding assisted by MS in sesame.
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