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Antifungal Activity of Chaetoviridin A from Chaetomium globosum CEF-082 Metabolites Against Verticillium dahliae in Cotton
Molecular Plant-Microbe Interactions ( IF 3.5 ) Pub Date : 2021-08-15 , DOI: 10.1094/mpmi-02-21-0032-r
Yun Zhang 1 , Heqin Zhu 2 , Yonghao Ye 3 , Canming Tang 1
Affiliation  

Cotton Verticillium wilt (CVW) is a severe soilborne disease caused by the pathogen Verticillium dahliae, and it has a great impact on cotton production. Previous studies found that the biocontrol agent Chaetomium globosum CEF-082 and its metabolic filtrate could reduce the incidence of CVW; however, the underlying mechanism remains unclear. The metabolic crude extract of CEF-082 increased the sensitivity of V. dahliae to stress, degraded the cell wall of V. dahliae, and increased the emergence and plant height of cotton. Through separation and purification of the metabolic crude extract of CEF-082, chaetoviridin A was identified and found to be highly active against V. dahliae. The compound caused cell necrosis and mycelial deformation, increased the production of reactive oxygen species and nitrous oxide, and inhibited the germination of microsclerotia of V. dahliae, enhancing the cotton plant defense response. In addition, CEF-082 also colonized cotton plants.

Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.



中文翻译:

Chaetomium globosum CEF-082 代谢物中的毛壳病毒素 A 对棉花中大丽轮枝菌的抗真菌活性

棉花黄萎病(CVW)是由病原菌大丽轮枝菌引起的严重土传病害,对棉花生产有很大影响。以往的研究发现,生防剂球毛壳菌CEF-082及其代谢滤液可降低CVW的发生率;然而,潜在的机制仍不清楚。CEF-082 的代谢粗提物增加了V的敏感性。大丽花受到压力,降解了V的细胞壁。大丽花,并增加了棉花的出苗和株高。通过对 CEF-082 代谢粗提物的分离和纯化,鉴定出毛壳病毒素 A 并发现其具有高活性五、大丽花。该化合物引起细胞坏死和菌丝变形,增加活性氧和一氧化二氮的产生,抑制大丽花微菌核的萌发,增强棉株防御反应。此外,CEF-082 还定植于棉花植物。

版权所有 © 2021 作者。这是在 CC BY-NC-ND 4.0 国际许可下分发的开放获取文章。

更新日期:2021-10-17
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