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园艺学报 ›› 2026, Vol. 53 ›› Issue (5): 1315-1328.doi: 10.16420/j.issn.0513-353x.2025-0545

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

ABC转运蛋白基因LeABC2在香菇耐热性中的功能研究

吴玉龙1, 王艺菲1, 刘高磊1,2, 王璐1, 赵之栋1, 王卓仁3, 肖扬1,*()   

  1. 1 华中农业大学应用真菌研究所农业微生物资源发掘与利用全国重点实验室,湖北洪山实验室, 武汉 430070
    2 武汉市农科院蔬菜研究所, 武汉 430065
    3 湖北省农业科学院经济作物研究所, 武汉 430064
  • 收稿日期:2025-11-13 修回日期:2025-12-01 出版日期:2026-05-25 发布日期:2026-05-26
  • 通讯作者:
  • 基金资助:
    湖北省支持种业高质量发展资金项目(HBZY2023B004-2); 现代农业产业技术体系建设专项资助(CARS-20)

Study on the Function of ABC Transporter Gene LeABC2 in Thermotolerance of Lentinula edodes

WU Yulong1, WANG Yifei1, LIU Gaolei1,2, WANG Lu1, ZHAO Zhidong1, WANG Zhuoren3, XIAO Yang1,*()   

  1. 1 Institute of Applied Mycology/State Key Laboratory of Agricultural Microbiology/Hubei Hongshan LaboratoryHuazhong Agricultural University, Wuhan 430070, China
    2 Institute of VegetableWuhan Academy of Agricultural Sciences and Technology, Wuhan 430065, China
    3 Institute of Economic CropsHubei Academy of Agricultural Sciences, Wuhan 430064, China
  • Received:2025-11-13 Revised:2025-12-01 Published:2026-05-25 Online:2026-05-26
  • Contact:

摘要:

测定了126个香菇菌株的耐热性表型,经全基因组关联分析,挖掘出与香菇耐热性相关的遗传位点,发现ABC转运蛋白基因LeABC2与香菇耐热性密切相关。通过RNAi技术沉默LeABC2基因后,转化子菌株在高温胁迫后恢复生长速度显著提升,临界耐热温度较野生型菌株提高。研究结果表明,LeABC2基因对香菇菌丝耐热性有负调控作用。

关键词: 香菇, 高温胁迫, 耐热性, ABC转运蛋白, 全基因组关联分析

Abstract:

In this study,thermotolerance phenotypes of 126 Lentinula edodes strains were evaluated. Through genome-wide association analysis,genetic loci associated with thermotolerance in L. edodes were identified. Further investigation revealed a significant correlation between the ABC transporter gene LeABC2 and thermotolerance in L. edodes. Upon silencing the LeABC2 gene via RNAi,the recovery growth rates of the transformant strains after high-temperature stress were significantly enhanced,and the critical high-temperature thresholds were higher compared to the wild-type strain. These results indicated that the LeABC2 gene negatively regulates the mycelial thermotolerance of L. edodes.

Key words: Lentinula edodes, high temperature stress, thermotolerance, ABC transporter, genome-wide association study