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Genomic analysis reveals rich genetic variation and potential targets of selection during domestication of castor bean from perennial woody tree to annual semi-woody crop
Xu, Wei1; Yang, Tianquan2; Qiu, Lijun1; Chapman, Mark A.3,4; Li, De-Zhu2; Liu, Aizhong1,5
Corresponding AuthorLiu, Aizhong(liuaizhong@mail.kib.ac.cn)
2019-10-01
Source PublicationPLANT DIRECT
Volume3Issue:10Pages:16
AbstractRelatively, little is known about the genetic variation of woody trees during domestication. Castor bean (Ricinus communis L. Euphorbiaceae) is a commercially important nonedible annual oilseed crop and differs from its wild progenitors that have a perennial woody habit. Although castor bean is one of the oldest cultivated crops, its domestication origin, genomic variation, and potential targets of selection underlying domestication traits remain unknown. Here, we performed a phylogenetic analysis, which suggests that the wild accessions were distinctively separated from the cultivated accessions. Genome sequencing of three accessions (one each wild, landrace, and cultivar) showed a large number of genetic variants between wild and cultivated castor bean (ZB306 or Hale), and relatively few variants between cultivar ZB306 and Hale. Comparative genome analysis revealed many candidate genes of selection and key pathways potentially involved in the transition from a perennial woody tree to annual crop. Interestingly, among 16 oil-related genes only three showed evidence of selection and the remainder showed low genetic variation at the population level, suggesting strong purifying selection in both the wild and domesticated gene pools. These results extend our understanding of the origin, genomic variation, and domestication, and provide a valuable resource for future gene-trait associations and castor bean breeding.
Keywordcastor bean domestication selection genetic variation seed storage lipids woody tree
DOI10.1002/pld3.173
Indexed BySCI ; SCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000509902200004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/70859
Collection资源植物与生物技术所级重点实验室
Corresponding AuthorLiu, Aizhong
Affiliation1.Chinese Acad Sci, Dept Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming Inst Bot, Kunming, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China
3.Univ Southampton, Biol Sci, Southampton, Hants, England
4.Univ Southampton, Ctr Underutilised Crops, Southampton, Hants, England
5.Southwest Forestry Univ, Minist Educ, Key Lab Forest Resources Conservat & Utilizat Sou, Kunming, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Xu, Wei,Yang, Tianquan,Qiu, Lijun,et al. Genomic analysis reveals rich genetic variation and potential targets of selection during domestication of castor bean from perennial woody tree to annual semi-woody crop[J]. PLANT DIRECT,2019,3(10):16.
APA Xu, Wei,Yang, Tianquan,Qiu, Lijun,Chapman, Mark A.,Li, De-Zhu,&Liu, Aizhong.(2019).Genomic analysis reveals rich genetic variation and potential targets of selection during domestication of castor bean from perennial woody tree to annual semi-woody crop.PLANT DIRECT,3(10),16.
MLA Xu, Wei,et al."Genomic analysis reveals rich genetic variation and potential targets of selection during domestication of castor bean from perennial woody tree to annual semi-woody crop".PLANT DIRECT 3.10(2019):16.
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