The genetic structure of the A mating-type locus of Lentinula edodes

被引:33
作者
Au, Chun Hang [1 ]
Wong, Man Chun [1 ]
Bao, Dapeng [2 ]
Zhang, Meiyan [2 ]
Song, Chunyan [2 ]
Song, Wenhua [2 ]
Law, Patrick Tik Wan [1 ]
Kues, Ursula [3 ]
Kwan, Hoi Shan [1 ]
机构
[1] Chinese Univ Hong Kong, Sch Life Sci, Biol Programme, Shatin, Hong Kong, Peoples R China
[2] Shanghai Acad Agr Sci, Edible Fungi Inst, Shanghai, Peoples R China
[3] Univ Gottingen, Busgen Inst, Div Mol Wood Biotechnol & Tech Mycol, D-37077 Gottingen, Germany
关键词
Lentinula edodes; Mushroom; Tetrapolar; Mating-type; Homeodomain; MULTIPLE SEQUENCE ALIGNMENT; HOMEODOMAIN PROTEINS; NUCLEAR-LOCALIZATION; SEXUAL DEVELOPMENT; COPRINUS-CINEREUS; WOOD DECAY; MUSHROOM; EVOLUTION; SPECIFICITIES; BASIDIOMYCETE;
D O I
10.1016/j.gene.2013.11.036
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
The Shiitake mushroom, Lentinula edodes (Berk.) Pegler is a tetrapolar basidiomycete with two unlinked mating-type loci, commonly called the A and B loci. Identifying the mating-types in shiitake is important for enhancing the breeding and cultivation of this economically-important edible mushroom. Here, we identified the A mating-type locus from the first draft genome sequence of L. edodes and characterized multiple alleles from different monokaryotic strains. Two intron-length polymorphism markers were developed to facilitate rapid molecular determination of A mating-type. L. edodes sequences were compared with those of known tetrapolar and bipolar basidiomycete species. The A mating-type genes are conserved at the homeodomain region across the order Agaricales. However, we observed unique genomic organization of the locus in L edodes which exhibits atypical gene order and multiple repetitive elements around its A locus. To our knowledge, this is the first known exception among Homobasidiomycetes, in which the mitochondrial intermediate peptidase (mip) gene is not closely linked to A locus. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:184 / 190
页数:7
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