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

• Genetic & Breeding · Germplasm Resources · Molecular Biology • Previous Articles     Next Articles

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 Online:2026-05-25 Published:2026-05-26
  • Contact: XIAO Yang

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