文献类型： 外文期刊

作者： Lu, Jia ¹ ; Fang, Ming ³ ; Yao, Fangjie ¹ ; Lu, Lixin 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; genetic map improvement; genomic anchoring; quality traits; QTL

期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）

ISSN：

年卷期： 2023 年 9 卷 7 期

页码：

收录情况： SCI

摘要： Auricularia heimuer is among China's most important edible mushrooms and is rich in gum. With the improvement of people's quality of life, demand is increasing for high-quality and good-tasting food; thus, the texture of A. heimuer is the focus of increasing attention. In this study, we added extra markers to a previously constructed genetic linkage map to generate a high-density genetic linkage map of A. heimuer, resolved the attributes of substrate quality-related traits, and performed quantitative trait locus (QTL) localization. The original genetic linkage map was improved by adding two new linkage groups, merging seven linkage groups into three linkage groups, and increasing the average linkage distance and total linkage estimated length. We anchored the 142 scaffolds of the genome to the improved genetic linkage map. In total, 15 significant QTLs controlling four quality-related traits were detected. Gumminess and chewiness, and cohesiveness and resilience, were linked. Three genes controlled cohesiveness and resilience; one gene controlled gumminess and chewiness. In conclusion, this study lays the foundation for gene localization and chromosome assembly in A. heimuer, elucidation of the mechanism of substrate quality-related trait formation, and provides a basis for precision breeding of A. heimuer.