文献类型： 外文期刊
作者： Miao, Hongmei 1 ; Wang, Lei 2 ; Qu, Lingbo 3 ; Liu, Hongyan 4 ; Sun, Yamin 2 ; Le, Meiwang 5 ; Wang, Qiang 6 ; Wei, Shuangling 1 ; Zheng, Yongzhan 1 ; Lin, Wenchao 2 ; Duan, Yinghui 1 ; Cao, Hengchun 1 ; Xiong, Songjin 2 ; Wang, Xuede 3 ; Wei, Libin 1 ; Li, Chun 1 ; Ma, Qin 1 ; Ju, Ming 1 ; Zhao, Ruihong 1 ; Li, Guiting 1 ; Mu, Cong 1 ; Tian, Qiuzhen 1 ; Mei, Hongxian 1 ; Zhang, Tide 1 ; Gao, Tongmei 1 ; Zhang, Haiyang 1 ;
作者机构： 1.Henan Acad Agr Sci, Henan Sesame Res Ctr, Zhengzhou 450002, Peoples R China
2.Nankai Univ, TEDA Sch Biol Sci & Biotechnol, Tianjin 300457, Peoples R China
3.Henan Technol Univ, Coll Food Sci & Technol, Zhengzhou 450001, Peoples R China
4.Henan Acad Agr Sci, Inst Plant Protect Res, Zhengzhou 450002, Peoples R China
5.Jiangxi Acad Agr Sci, Crops Res Inst, Nanchang 330200, Peoples R China
6.Anhui Acad Agr Sci, Crop Res Inst, Hefei 230031, Peoples R China
关键词： Sesamum; genome evolution; structural variation; plant architecture; Fusarium wilt disease; oil content
期刊名称：PLANT COMMUNICATIONS （ 影响因子：10.5； 五年影响因子：10.5 ）
ISSN： 2590-3462
年卷期： 2024 年 5 卷 1 期
页码：
收录情况： SCI
摘要： Sesame is an ancient oilseed crop with high oil content and quality. However, the evolutionary history and genetic mechanisms of its valuable agronomic traits remain unclear. Here, we report chromosome-scale genomes of cultivated sesame (Sesamum indicum L.) and six wild Sesamum species, representing all three karyotypes within this genus. Karyotyping and genome-based phylogenic analysis revealed the evolutionary route of Sesamum species from n = 13 to n = 16 and revealed that allotetraploidization occurred in the wild species Sesamum radiatum. Early divergence of the Sesamum genus (48.5-19.7 million years ago) during the Tertiary period and its ancient phylogenic position within eudicots were observed. Pan-genome analysis revealed 9164 core gene families in the 7Sesamumspecies. These families are significantly enriched in variousmetabolic pathways, including fatty acid (FA) metabolism and FA biosynthesis. Structural variations in SiPT1 and SiDT1 within the phosphatidyl ethanolamine-binding protein gene family lead to the genomic evolution of plant-architecture and inflorescence-development phenotypes inSesamum. A genome-wide association study (GWAS) of an interspecific population and genome comparisons revealed a long terminal repeat insertion and a sequence deletion inDIR genes of wildSesamum angustifoliumand cultivated sesame, respectively; both variations independently cause high susceptibility toFusariumwilt disease. A GWAS of 560 sesame accessions combined with an overexpression study confirmed that the NAC1andPPOgenes play an important role in upregulating oil content of sesame. Our study provides high-quality genomic resources for cultivated and wild Sesamum species and insights that can improve molecular breeding strategies for sesame and other oilseed crops.
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