生防菌防治棉花黄萎病的研究进展OA

Cotton Verticillium wilt is a vascular fungal disease caused by Verticillium dahliae that reduces cotton yield and fiber quality and seriously restricts the green development of the cotton industry.Cotton Verticillium wilt is characterised by high incidence,wide distribution,rapid spread,and difficulty in prevention and control.The main modes of transmission include seed dispersal,plant disease residue dispersal,and soil dispersal.Current methods of controlling Verticillium wilt mainly include agricultural control,chemical control,biological control,and selection of disease-resistant varieties.In an environment where the country is actively implementing the reduction of chemical agents and green prevention and control technologies,biological control has become an important means to prevent and control Verticillium wilt in cotton due to its advantages of less pollution,high safety,less resistance to the disease,and improvement of the soil environment.Biocontrol bacteria can not only directly inhibit the growth and infection of Verticillium dahliae through antagonism,competition for nutrients and reproductive space,secretion of bactericidal substances or reduction of pathogenicity,but can also regulate the homeostasis of soil rhizosphere microbial communities,promote plant growth or enhance plant immunity,thereby indirectly preventing and controlling Verticillium wilt in cotton.In this article,the progress of research on cotton Verticillium wilt biocontrol bacteria from five aspects:bacteria,fungi,actinomycetes,avirulent/weakly toxic strains and mycoviruses was reviewed,and outlook on future development trends in the control of cotton Verticillium wilt biocontrol bacteria was conducted to provide a theoretical reference for the development of Verticillium wilt biocontrol fungicides and for the environmentally friendly and efficient control of Verticillium wilt in cotton.