Inhibitory Effect of Beauveria bassiana on Three Apple Pathogens
SUO Xiangmin
MA Bin
HAO Jie
LIU Tiezheng
FENG Jianzhong
YAN Xinmin
WANG Xian'ge
LI Xueying
Abstract：To study the antimicrobial activity of Beauveria bassiana against pathogenic fungi of fruit tree,in vitro antagonism of the Beauveria bassiana strain BD-B180 was tested against Valsa mali Miyabe et Yamada,Physalospora piricola Nose,and Alternaria mali Roberts in laboratory.The results showed that B.bassiana BD-B180 had a certain inhibition against the three kinds of pathogenic fungi by confront culture and showed the best inhibition effect on A.mali Roberts.The highest inhibition rate to mycelia growth of A.mali Roberts,P.piricola Nose,and V.mali Miyabe et Yamada by BD-B180 reached 45.08％,41.35％,and 39.74％ respectively.On the PDA plate mixed with BD-B180 conidia suspension,different doses of conidia had different inhibitory effects,with inhibition rate linearly correlated to inoculums.On the PDA plate mixed with 2.49 × 107 cfu/mL of BD-B180 conidia,BD-B180 had the best inhibition effect on P.piricola Nose with the highest inhibition rate of 90.81％,and the highest inhibition rates on A.mali Roberts and V.mali Miyabe et Yamada were 77.14％ and 52.78％ respectively.The sterile fermented broth of BD-B180 also displayed inhibition,with inhibition rate linearly correlated to metabolite concentration.The highest inhibition rates to mycelia growth of P.piricola Nose,A.mali Roberts and V.mali Miyabe et Yamada by BD-B180 fermented broth cultured for 20 d reached 59.76％,66.42％ and 68.33％,respectively.It indicates that developing active substances anti-fruit tree pathogens from B.bassiana has great potential.
Keywords：Beauveria bassianaValsa mali Miyabe et YamadaPhysalospora piricola NoseAlternaria mali RobertsInhibitory effect
Publication Date：2018-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 71-77 )