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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (18): 115-124.doi: 10.11924/j.issn.1000-6850.casb2023-0587

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Physical Mutagenesis Technology in Enhancing Antagonism of Beneficial Microorganisms Against Banana Fungal Pathogens: A Review

WU Li1,2(), WANG Yongfen2,3, YU Hongwei1,2, DING Mingbi1,2, BAI Tingting2, LI Shu2(), ZHENG Sijun2,4()   

  1. 1 Resource Plant Research Institute, Yunnan University, Kunming 650500
    2 Yunnan Key Laboratory of Green Control of Agricultural Transboundary Pests/Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205
    3 Institute of Tropical and Subtropical Economic Crops, Yunnan Academy of Agricultural Sciences, Longyang 678000
    4 Bioversity International, Kunming 650205
  • Received:2023-08-22 Revised:2023-11-16 Online:2024-06-25 Published:2024-06-18

Abstract:

Banana fungal disease is one of the main diseases in banana production, which can seriously hinder the sustainable development of banana industry. The biological control based on biocontrol bacteria has great application prospects in the prevention and control of banana fungal diseases. However, the effective colonization of biocontrol bacteria to the host in the field and its stability of disease prevention ability have always been the problems to be solved. The mutation and improvement of biocontrol strains by physical mutagenesis technology can significantly improve the colonization ability of biocontrol bacteria to hosts and the control effect of diseases. In order to elucidate the impact of physical mutagenesis technology on improving the field control efficiency of biocontrol bacteria, this paper provides a comprehensive overview of the various types and mechanisms of physical mutagenesis technology, as well as its application in antagonizing bacteria. Additionally, it summarizes the utilization of physical mutagenesis in improving the resistance of beneficial microorganisms to banana fungus pathogens, along with the screening and identification methods for mutant strains. Furthermore, an analysis is conducted on the advantages and disadvantages associated on each mutagenesis technology. It is pointed out that the physical mutagenesis technology has some problems of difficulty to master the direction of induced mutation, low efficiency and instability. In order to address these limitations, novel physical mutagenesis techniques such as ion beam, intense pulsed light and space mutagenesis are proposed. The aim of this paper is to provide a comprehensive reference for the application of physical mutagenesis technology in enhancing the efficacy of biocontrol bacteria for plant disease management. The application prospect of physical mutagenesis technology in enhancing antagonistic bacteria on banana fungal pathogens is also discussed.

Key words: fungal pathogens, fusarium wilt of banana, biocontrol bacteria, physical mutagenesis, mutation breeding, biological control, antagonistic bacteria