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journal1 ›› 2018, Vol. 34 ›› Issue (3): 423-430.DOI: 10.16409/j.cnki.2095-039x.2018.03.010

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Antagonism of Bjerkandera adusta M-1 against Colletotrichum gloeosprioides and Optimization of Fermentation Conditions

WANG Wenqiang, LI Yong, ZHANG Xuhui, WEI Wanling, ZHOU Fengwu, LI Suping, LI Jie   

  1. College of Resources and Environment, Southwest University, Chongqing 400715, China
  • Received:2018-01-01 Online:2018-06-08 Published:2018-06-14

Abstract: In this study, the biocontrol efficiency of Bjerkandera adusta M-1 strain on Colletotrichum gloeosprioides was investigated by the plate confrontation test and fermentation conditions of M-1 were optimized by the single factor test and the response surface methodology. The results showed that M-1 can obviously inhibit the growth of C. gloeosprioides, with the inhibitory rate of 65.7%, significantly higher than Carbendazim and Thiophanate methyl. The optimized fermentation conditions were C/N of 7.5, pH of 6.5, culture volume 36% of bottling capacity, a culture time of 22 d, a rotational speed of 180 r/min, and a culture temperature of 30℃, and the inhibition rate reached 71.1%. In conclusion, it was the first report that B. adusta M-1 strain had a strong antagonistic activity against C. gloeosprioides, and the inhibition rate of fermentation broth was strengthened after the fermentation parameters were optimized. The results laid a theoretical foundation for potential application of M-1 against C. gloeosprioides in practice.

Key words: Bjerkandera adusta, response surface methodology, Colletotrichum gloeosprioides, fermentation broth, antagonism

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