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

doi:10.1038/s41598-019-48492-8

	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, Anmin 1,3; Li, Fei 1; Xu, Wei1 ; Wang, Zaiqing 1,3; Sun, Chao 1; Han, Bing 1,3; Wang, Yue 1; Wang, Bo 4; Cheng, Xiaomao 2; Liu, Aizhong2
通讯作者	Liu, Aizhong(liuaizhong@mail.kib.ac.cn)
	2019-08-16
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	9 页码:11
摘要	Castor 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.
DOI	10.1038/s41598-019-48492-8
收录类别	SCI
语种	英语
WOS记录号	WOS:000481585600011
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/68345
专题	资源植物与生物技术所级重点实验室
通讯作者	Liu, Aizhong
作者单位	1.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
推荐引用方式 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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