Constructing a new integrated genetic linkage map and mapping quantitative trait loci for vegetative mycelium growth rate in Lentinula edodes
文献类型: 外文期刊
第一作者: Gong, Wen-Bing
作者: Gong, Wen-Bing;Bian, Yin-Bing;Zhou, Yan;Xiao, Yang;Gong, Wen-Bing;Liu, Wei;Lu, Ying-Ying;Bian, Yin-Bing;Zhou, Yan;Xiao, Yang;Liu, Wei;Lu, Ying-Ying;Kwan, Hoi Shan;Cheung, Man Kit
作者机构:
关键词: Genetic linkage map;Quantitative trait loci;Shiitake mushroom;Vegetative mycelium growth rate
期刊名称:FUNGAL BIOLOGY ( 影响因子:3.099; 五年影响因子:3.364 )
ISSN: 1878-6146
年卷期: 2014 年 118 卷 3 期
页码:
收录情况: SCI
摘要: The most saturated linkage map for Lentinula edodes to date was constructed based on a mono-. karyotic population of 146 single spore isolates (SSIs) using sequence-related amplified polymorphism (SRAP), target region amplification polymorphism (TRAP), insertion deletion (InDel) markers, and the mating-type loci. Five hundred and twenty-four markers were located on 13 linkage groups (LGs). The map spanned a total length of 1006.1 cM, with an average marker spacing of 2.0 cM. Quantitative trait loci (QTLs) mapping was utilized to uncover the loci regulating and controlling the vegetative mycelium growth rate on various synthetic media, and complex medium for commercial cultivation of L. edodes. Two and 13 putative QTLs, identified respectively in the monokaryotic population and two testcross dikaryotic populations, were mapped on seven different LGs. Several vegetative mycelium growth rate-related QTLs uncovered here were clustered on LG4 (Qmgr1, Qdgr1, Qdgr2 and Qdgr9) and LG6 (Qdgr3, Qdgr4 and Qdgr5), implying the presence of main genomic areas responsible for growth rate regulation and control. The QTL hotspot region on LG4 was found to be in close proximity to:the region containing the mating-type A (MAT-A) locus. Moreover, Qdgr2 on LG4 was detected on different media, contributing 8.07%-23.71% of the phenotypic variation. The present study provides essential information for QTL mapping and marker-assisted selection (MAS) in L. edodes. (C) 2014 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
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