Hsp40 Protein LeDnaJ07 Enhances the Thermotolerance of and Regulates IAA Biosynthesis by Interacting LetrpE.

Gangzheng Wang, Yi Luo, Chen Wang, Yan Zhou, Chunye Mou, Heng Kang, Yang Xiao, Yinbing Bian, Yu Hua Gong
Author Information
  1. Gangzheng Wang: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  2. Yi Luo: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  3. Chen Wang: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  4. Yan Zhou: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  5. Chunye Mou: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  6. Heng Kang: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  7. Yang Xiao: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  8. Yinbing Bian: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
  9. Yu Hua Gong: Institute of Applied Mycology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.

Abstract

Our previous study found that RNAi decreased resistance to heat stress and infection. In this study, the structure and function of the gene was analyzed by gene cloning and overexpression in stress-sensitive strain YS55 via the -mediated transformation method. Transformants were confirmed by qRT-PCR, fluorescence observation and Southern blotting. Overexpression of in YS55 not only enhanced mycelial resistance to heat stress but also facilitated mycelial growth. In the presence of heat stress, the intracellular IAA content showed a significant increase in the two overexpression strains but only a slight change in the YS55 wild type strain. Moreover, the interaction between LeDnaJ07 and LetrpE was demonstrated via Y2H and BiFC assays. These results suggested that LeDnaJ07 may be involved in regulating IAA biosynthesis and the resistance of to heat stresses via interacting with LetrpE.

Keywords

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Word Cloud

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