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Identification of Critical Candidate Genes Controlling Monokaryon Fruiting in Flammulina filiformis Using Genetic Population Construction and Bulked Segregant Analysis Sequencing

文献类型： 外文期刊

作者： Wang, Peng 1 ; Yu, Ya 1 ; Xia, Lei 1 ; Yan, Qi 2 ; Tan, Xiao 1 ; Wang, Dongyin 3 ; Wang, Xue 3 ; Zhang, Zhibin 4 ; Wen, Jiawei 1 ; Huang, Xiao 1 ;

作者机构： 1.Jilin Acad Agr Sci, Northeast Agr Res Ctr China, Changchun 130033, Peoples R China

2.Jilin Agr Univ, Coll Hort, Changchun 130118, Peoples R China

3.Inst Sci & Technol Informat Jilin Prov, Changchun 130033, Peoples R China

4.Northeast Normal Univ, Sch Life Sci, Changchun 130024, Peoples R China

关键词： Flammulina filiformis; genetic population construction; BSA-seq; monokaryotic fruiting

期刊名称：JOURNAL OF FUNGI （ 影响因子：4.0； 五年影响因子：4.5 ）

ISSN：

年卷期： 2025 年 11 卷 7 期

页码：

收录情况： SCI

摘要： Fruiting body formation in edible fungi is a critical development process for both scientific understanding and industrial cultivation, yet the underlying genetic mechanisms remain poorly elucidated. This study aimed to identify key genes regulating monokaryotic fruiting in Flammulina filiformis. A genetic segregation population was constructed through selfing purification and hybrid segregation of the FF002 strain, followed by mapping candidate genes with bulked segregant analysis sequencing (BSA-seq). A 10 kb genomic region on scaffold19 was identified, pinpointing the gene FV-L110034160, which encodes a U2 snRNP complex component involved in pre-mRNA splicing. A T -> G SNP located 121 bp downstream of the ATG codon caused a serine-to-alanine substitution, disrupting a conserved domain and altering fruiting phenotypes. Phylogenetic analysis further revealed conservation of this gene in fungal genera. These findings elucidate a key regulatory gene controlling monokaryotic fruiting in F. filiformis, providing novel insights into fruiting body formation mechanisms and establishing a foundation for genetic studies in other edible fungi.

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