Genetic discovery for oil production and quality in sesame

作者：Xin Wei, Kunyan Liu, Yanxin Zhang, Qi Feng, Linhai Wang, Yan Zhao, Donghua Li, Qiang Zhao, Xiaodong Zhu, Xiaofeng Zhu, Wenjun Li, Danlin Fan, Yuan Gao, Yiqi Lu, Xianmei Zhang, Xiumei Tang, Xiumei Tang, Congcong Zhou, Chuanrang Zhu, Lifeng Liu, Ruichun Zhong, Qilin Tian, Ziruo Wen, Qijun Weng, Bin Han, Xuehui Huang, Xiurong Zhang, Xiurong Zhang · 发表于：Nature Communications · 年份：2015 · DOI：10.1038/ncomms9609 · 被引用次数：270 · 研究领域：Sesame and Sesamin Research、Lipid metabolism and biosynthesis、Nitrogen and Sulfur Effects on Brassica

Oilseed crops are used to produce vegetable oil. Sesame (Sesamum indicum), an oilseed crop grown worldwide, has high oil content and a small diploid genome, but the genetic basis of oil production and quality is unclear. Here we sequence 705 diverse sesame varieties to construct a haplotype map of the sesame genome and de novo assemble two representative varieties to identify sequence variations. We investigate 56 agronomic traits in four environments and identify 549 associated loci. Examination of the major loci identifies 46 candidate causative genes, including genes related to oil content, fatty acid biosynthesis and yield. Several of the candidate genes for oil content encode enzymes involved in oil metabolism. Two major genes associated with lignification and black pigmentation in the seed coat are also associated with large variation in oil content. These findings may inform breeding and improvement strategies for a broad range of oilseed crops.