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Application of a high-resolution genetic map for chromosome-scale genome assembly and fine QTLs mapping of seed size and weight traits in castor bean
Yu, Anmin1,3; Li, Fei1; Xu, Wei1; Wang, Zaiqing1,3; Sun, Chao1; Han, Bing1,3; Wang, Yue1; Wang, Bo4; Cheng, Xiaomao2; Liu, Aizhong2
Corresponding AuthorLiu, Aizhong(liuaizhong@mail.kib.ac.cn)
2019-08-16
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume9Pages:11
AbstractCastor bean (Ricinus communis L., Euphorbiaceae) is a critical biodiesel crop and its seed derivatives have important industrial applications. Due to lack of a high-density genetic map, the breeding and genetic improvement of castor bean has been largely restricted. In this study, based on a recombinant inbred line (RIL) population consisting of 200 individuals, we generated 8,896 high-quality genomic SNP markers and constructed a high-resolution genetic map with 10 linkage groups (LGs), spanning 1,852.33 centiMorgan (cM). Based on the genetic map, 996 scaffolds from the draft reference genome were anchored onto 10 pseudo-chromosomes, covering 84.43% of the castor bean genome. Furthermore, the quality of the pseudo-chromosome scale assembly genome was confirmed via genome collinearity analysis within the castor bean genome as well as between castor bean and cassava. Our results provide new evidence that the phylogenetic position of castor bean is relatively solitary from other taxa in the Euphorbiaceae family. Based on the genetic map, we identified 16 QTLs that control seed size and weight (covering 851 candidate genes). The findings will be helpful for further research into potential new mechanisms controlling seed size and weight in castor bean. The genetic map and improved pseudo-chromosome scale genome provide crucial foundations for marker-assisted selection (MAS) of QTL governing important agronomic traits, as well as the accelerated molecular breeding of castor bean in a cost-effective pattern.
DOI10.1038/s41598-019-48492-8
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000481585600011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/68345
Collection资源植物与生物技术所级重点实验室
Corresponding AuthorLiu, Aizhong
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming 650201, Yunnan, Peoples R China
2.Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sou, Minist Educ, Kunming 650224, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Wuhan Genoseq Technol Co Ltd, Wuhan 430070, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Yu, Anmin,Li, Fei,Xu, Wei,et al. Application of a high-resolution genetic map for chromosome-scale genome assembly and fine QTLs mapping of seed size and weight traits in castor bean[J]. SCIENTIFIC REPORTS,2019,9:11.
APA Yu, Anmin.,Li, Fei.,Xu, Wei.,Wang, Zaiqing.,Sun, Chao.,...&Liu, Aizhong.(2019).Application of a high-resolution genetic map for chromosome-scale genome assembly and fine QTLs mapping of seed size and weight traits in castor bean.SCIENTIFIC REPORTS,9,11.
MLA Yu, Anmin,et al."Application of a high-resolution genetic map for chromosome-scale genome assembly and fine QTLs mapping of seed size and weight traits in castor bean".SCIENTIFIC REPORTS 9(2019):11.
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