Study on the Antagonistic Effect of Three Strains of Endophytic Bacteria on Cotton-wilt Fusarium
[Objective]To explore the antagonistic effect of three endophytic bacteria in cotton against Fusarium wilt.[Method]Using the plate confrontation method,three endophytic bacterial suspensions,supernatants,and volatiles were used to study the antagonistic effects of the three endophytic bacteria against the cotton Fusarium wilt pathogen. [Result]The antagonistic effect of the three bacterial suspensions on Fu-sarium oxysporum was O>T>DG3-1. The antagonistic effect of the supernatant of the three bacterial strains on F. oxysporum was T>O>DG3-1; the antagonistic effect of volatiles from three strains of bacteria on F. oxysporum was DG3-1>T>O. Microscopic observation of the morphol-ogy of the mycelium that suppressed F. oxysporum showed cavities,breakage,and partial dissolution of the cell wall. Recreate the inhibited F. oxysporum,which could grow normally but slowly. [Conclusion]Three endophytic bacteria have varying degrees of influence on the growth of Fusarium wilt.
万方数据
维普
