Integrated Consensus Map of Cultivated Peanut and Wild Relatives Reveals Structures of the A and B Genomes of Arachis and Divergence of the Legume Genomes
文献类型: 外文期刊
第一作者: Shirasawa, Kenta
作者: Shirasawa, Kenta;Hirakawa, Hideki;Tabata, Satoshi;Isobe, Sachiko;Bertioli, David J.;Varshney, Rajeev K.;Thudi, Mahendar;Pandey, Manish K.;Moretzsohn, Marcio C.;Leal-Bertioli, Soraya C. M.;Rami, Jean-Francois;Fonceka, Daniel;Gowda, Makanahally V. C.;Qin, Hongde;Qin, Hongde;Guo, Baozhu;Hong, Yanbin;Liang, Xuanqiang
作者机构:
关键词: Arachis spp.;comparative genomics;genetic linkage map;integrated consensus map;legume genome
期刊名称:DNA RESEARCH ( 影响因子:4.458; 五年影响因子:5.371 )
ISSN: 1340-2838
年卷期: 2013 年 20 卷 2 期
页码:
收录情况: SCI
摘要: The complex, tetraploid genome structure of peanut (Arachis hypogaea) has obstructed advances in genetics and genomics in the species. The aim of this study is to understand the genome structure of Arachis by developing a high-density integrated consensus map. Three recombinant inbred line populations derived from crosses between the A genome diploid species, Arachis duranensis and Arachis stenosperma; the B genome diploid species, Arachis ipaensis and Arachis magna; and between the AB genome tetraploids, A. hypogaea and an artificial amphidiploid (A. ipaensis x A. duranensis)(4x), were used to construct genetic linkage maps: 10 linkage groups (LGs) of 544 cM with 597 loci for the A genome; 10 LGs of 461 cM with 798 loci for the B genome; and 20 LGs of 1442 cM with 1469 loci for the AB genome. The resultant maps plus 13 published maps were integrated into a consensus map covering 2651 cM with 3693 marker loci which was anchored to 20 consensus LGs corresponding to the A and B genomes. The comparative genomics with genome sequences of Cajanus cajan, Glycine max, Lotus japonicas, and Medicago truncatula revealed that the Arachis genome has segmented synteny relationship to the other legumes. The comparative maps in legumes, integrated tetraploid consensus maps, and genome-specific diploid maps will increase the genetic and genomic understanding of Arachis and should facilitate molecular breeding.
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