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Developing new SSR markers from ESTs of pea (Pisum sativum L.)

文献类型： 外文期刊

作者： Gong, Ya-ming 1 ; Xu, Sheng-chun 1 ; Mao, Wei-hua 2 ; Hu, Qi-zan 1 ; Zhang, Gu-wen 1 ; Ding, Ju 1 ; Li, Ya-dan 2 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Vegetables, Hangzhou 310021, Zhejiang, Peoples R China

2.Zhejiang Univ, Ctr Anal & Measurement, Hangzhou 310029, Zhejiang, Peoples R China

关键词： Pea;Expressed sequence tag (EST);Simple sequence repeat (SSR);Microsatellite

期刊名称：JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B （ 影响因子：3.066； 五年影响因子：3.057 ）

ISSN： 1673-1581

年卷期： 2010 年 11 卷 9 期

页码：

收录情况： SCI

摘要： The development of expressed sequence tags (ESTs) from pea has provided a useful source for mining novel simple sequence repeat (SSR) markers. In the present research, in order to find EST-derived SSR markers, 18 552 pea ESTs from the National Center for Biotechnology Information (NCBI) database were downloaded and assembled into 10 086 unigenes. A total of 586 microsatellites in 530 unigenes were identified, indicating that merely 5.25% of sequences contained SSRs. The most abundant SSRs within pea were tri-nucleotide repeat motifs, and among all the tri-nucleotide repeats, the motif GAA was the most abundant type. In total, 49 SSRs were used for primer design. EST-SSR loci were subsequently screened on 10 widely adapted varieties in China. Of these, nine loci showed polymorphic profiles that revealed two to three alleles per locus. The polymorphism information content value ranged from 0.18 to 0.58 with an average of 0.41. Furthermore, transferable analysis revealed that some of these loci showed transferability to faba bean. Because of their polymorphism and transferability, these nine novel EST-SSRs will be valuable tools for marker-assisted breeding and comparative mapping of pea in the future.

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[1]Determination of the genetic diversity of vegetable soybean [Glycine max (L.) Merr.] using EST-SSR markers. Zhang, Gu-wen,Xu, Sheng-chun,Hu, Qi-zan,Gong, Ya-ming,Mao, Wei-hua. 2013

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