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Biological role of the superoxide dismutase TaSOD on vegetative growth, stress response, and antagonism in Trichoderma asperellum

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Abstract

Trichoderma asperellum can produce chlamydospores to resist extreme external environment. We previously identified a superoxide dismutase (SOD) protein that may be closely related to the enhancement of stress resistance by using two-dimensional gel electrophoresis. T. asperellum SOD (TaSOD) consists of 154 amino acids and shows high homology with T. koningii SOD. The mycelial growth rate of the TaSOD knockout mutant (ΔTaSOD) was significantly slower than that of wild type. In addition, ΔTaSOD showed a decreased osmotic stress resistance and antagonistic activity against Curvularia lunata, Fusarium verticillioides, and Rhizoctonia solani. Results showed that TaSOD plays a vital role in regulating the stress response and antagonism of T. asperellum.

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Acknowledgments

We would like to thank Qiangqiang Wang for the great work on Trichoderma spp. identification. The work was supported by National Key Research and Development Program of China (Synergism of Live Bio-pesticides and Related Mechanism of Ecological Regulation on Pest, No. 2017YFD0200403), Key National R & D Programs - Key International Intergovernmental Scientific and Technological Innovation Cooperation Projects (2017YFE0104900), Agriculture Research System of Shanghai. China (Grant No.201710), 948 Key Project (2016-X48), and China Agriculture Research System (CARS-02).

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Authors and Affiliations

  1. School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Jinxin Gao, Qiangqiang Wang, Jianan Sun, Anle He & Jie Chen

  2. State Key Laboratory of Microbial Metabolism, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Jinxin Gao, Qiangqiang Wang, Jianan Sun, Anle He & Jie Chen

  3. Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Shanghai, 200240, People’s Republic of China

    Jinxin Gao, Qiangqiang Wang, Jianan Sun, Anle He & Jie Chen

  4. Department of Immunology and Microbial Diseases, Albany Medical College, Albany, NY, 12208, USA

    Jinxin Gao

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  1. Jinxin Gao
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  2. Qiangqiang Wang
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  3. Jianan Sun
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  4. Anle He
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  5. Jie Chen
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Correspondence to Jie Chen.

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Gao, J., Wang, Q., Sun, J. et al. Biological role of the superoxide dismutase TaSOD on vegetative growth, stress response, and antagonism in Trichoderma asperellum. Australasian Plant Pathol. 47, 623–627 (2018). https://doi.org/10.1007/s13313-018-0605-5

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  • DOI: https://doi.org/10.1007/s13313-018-0605-5

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