Molecular mapping of Arabidopsis thaliana lipid-related orthologous genes in Brassica napus
文献类型： 外文期刊
作者： Zhao, Jianyi 1 ; Huang, Jixiang 1 ; Chen, Fei 1 ; Xu, Fei 2 ; Ni, Xiyuan 1 ; Xu, Haiming 2 ; Wang, Yilong 3 ; Jiang, Chon 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Crop & Nucl Technol Utilizat, Hangzhou, Zhejiang, Peoples R China
2.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310003, Zhejiang, Peoples R China
3.Yangzhou Univ, Coll Biosci & Biotechnol, Yangzhou, Peoples R China
4.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan, Peoples R China
5.Hybrid Rapeseed Res Ctr Shaanxi, Dali, Peoples R China
6.NW A&F Univ, Coll Agron, Yanglin, Peoples R China
7.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, Hangzhou, Zhejiang, Peoples R China
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）
ISSN： 0040-5752
年卷期： 2012 年 124 卷 2 期
页码：
收录情况： SCI
摘要： Quantitative Trait Loci (QTL) for oil content has been previously analyzed in a SG-DH population from a cross between a Chinese cultivar and a European cultivar of Brassica napus. Eight QTL with additive and epistatic effects, and with environmental interactions were evaluated. Here we present an integrated linkage map of this population predominantly based on informative markers derived from Brassica sequences, including 249 orthologous A. thaliana genes, where nearly half (112) are acyl lipid metabolism related genes. Comparative genomic analysis between B. napus and A. thaliana revealed 33 colinearity regions. Each of the conserved A. thaliana segments is present two to six times in the B. napus genome. Approximately half of the mapped lipid-related orthologous gene loci (76/137) were assigned in these conserved colinearity regions. QTL analysis for seed oil content was performed using the new map and phenotypic data from 11 different field trials. Nine significant QTL were identified on linkage groups A1, A5, A7, A9, C2, C3, C6 and C8, together explaining 57.79% of the total phenotypic variation. A total of 14 lipid related candidate gene loci were located in the confidence intervals of six of these QTL, of which ten were assigned in the conserved colinearity regions and felled in the most frequently overlapped QTL intervals. The information obtained from this study demonstrates the potential role of the suggested candidate genes in rapeseed kernel oil accumulation.
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