1. Sequencing of Chinese castor lines reveals genetic signatures of selection and yield-associated loci
- Author
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Cheng Pan, Donghai Li, Shiyou Lü, Aimin Wu, Wanfei Liu, Xinxin Yu, Xingchu Yan, Jun Yu, Chen Chen, Lianlian Hu, Peng Cui, Wei Fan, Meilian Tan, Qiang Lin, Songnian Hu, Jianjun Lu, Lei Wang, Jue Ruan, and Lijun Wang
- Subjects
Agricultural genetics ,0301 basic medicine ,China ,Candidate gene ,Plant domestication ,Science ,Plant genetics ,General Physics and Astronomy ,Genome-wide association study ,02 engineering and technology ,Biology ,Lignin ,Article ,General Biochemistry, Genetics and Molecular Biology ,Population genomics ,03 medical and health sciences ,Plant Oils ,Genetic variation ,Selection, Genetic ,Cellulose ,Domestication ,lcsh:Science ,Selection (genetic algorithm) ,Genetic association ,Genetics ,Genetic diversity ,Multidisciplinary ,Geography ,Ricinus ,Glycosyltransferases ,General Chemistry ,021001 nanoscience & nanotechnology ,Natural variation in plants ,030104 developmental biology ,Fruit ,lcsh:Q ,0210 nano-technology ,Genome, Plant ,Genome-Wide Association Study - Abstract
Oil produced by castor (Ricinus communis) has broad industrial applications. However, knowledge on the genetic diversity, especially genetic alterations that occurred during domestication and subsequent traits selection, of this oil crop is limited. Here, our population genomics analyses show that the Chinese castors have developed a geographic pattern, classified into the southern-, the middle-, and the northern-China groups. We detect a number of candidate genomic loci that are associated with the selection signals during the geographical differentiation and domestication. Using genome-wide association analysis, we identify candidate genes associated with nine agronomically important traits. One of the candidate genes encoding a glycosyltransferase related to cellulose and lignin biosynthesis is associated with both capsule dehiscence and endocarp thickness. We hypothesize that the abundance of cellulose or lignin in endocarp is an important factor for capsule dehiscence. Our results provide foundation for castor breeding and genetic study., Castor is an important industrial oil crop, but knowledge on its genetic diversity is limited. Here, Fan et al. show geographic pattern of Chinese castors that have developed during domestication by population genetic analyses, and reveal candidate genes associated with agronomically important traits.
- Published
- 2019