文献类型： 外文期刊

作者： Lu, Jia ¹ ; Lu, Lixin ³ ; Yao, Fangjie ¹ ; Fang, Ming ³ ; Ma, Xiaoxu ¹ ; Meng, Jingjing ³ ; Shao, Kaisheng ¹ ;

作者机构： 1.Jilin Agr Univ, Engn Res Ctr, Minist Educ China Food & Med, Changchun 130118, Peoples R China

2.Guizhou Acad Agr Sci, Guizhou Key Lab Edible Fungi Breeding, Guiyang 550006, Peoples R China

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

关键词： Auricularia heimuer; fruiting body type; Genetic linkage mapping; Genomic co-linearity; TATA-box

期刊名称：JOURNAL OF FUNGI （ 影响因子：4.7； 五年影响因子：5.2 ）

ISSN：

年卷期： 2023 年 9 卷 9 期

页码：

收录情况： SCI

摘要： Auricularia heimuer is a widely cultivated jelly mushroom. The fruiting bodies are categorized into cluster and chrysanthemum types. With changing consumer demands and the need to reduce bio-waste, the demand for clustered fruiting bodies is increasing. Therefore, gene mining for fruiting body types is a matter of urgency. We determined that the A. heimuer locus for fruiting body type was located at one end of the genetic linkage map. The locus was localized between the markers D23860 and D389 by increasing the density of the genetic linkage map. BlastN alignment showed that the marker SCL-18 was also located between D23860 and D389, and a total of 25 coding genes were annotated within this interval. Through parental transcriptome analysis and qRT-PCR verification, the locus g7219 was identified as the gene controlling the fruiting body type. A single-nucleotide substitution in the TATA box of g7219 was detected between the parents. By PCR amplification of the promoter region of g7219, the TATA-box sequences of the cluster- and chrysanthemum-type strains were found to be CATAAAA and TATAAAA, respectively. This study provides a foundation for the breeding of fruiting body types and strain improvement of A. heimuer.