Evaluating the Mode of Antifungal Action of Heat-Stable Antifungal Factor (HSAF) in Neurospora crassa
文献类型： 外文期刊
作者： Liu, Xiaodong 1 ; Jiang, Xianzhang 1 ; Sun, Haowen 1 ; Du, Jiawen 1 ; Luo, Yuhang 1 ; Huang, Jianzhong 1 ; Qin, Lina 1 ;
作者机构： 1.Fujian Normal Univ, Coll Life Sci, Natl Joint Engn Res Ctr Ind Microbiol & Fermentat, Fuzhou 350108, Peoples R China
2.Fujian Acad Agr Sci, Inst Biotechnol, Fuzhou 350003, Peoples R China
关键词： HSAF; antifungal; transcriptome; Neurospora crassa; cell wall; autophagy
期刊名称：JOURNAL OF FUNGI （ 影响因子：5.724； 五年影响因子：6.413 ）
ISSN：
年卷期： 2022 年 8 卷 3 期
页码：
收录情况： SCI
摘要： Heat-stable antifungal factor (HSAF) isolated from Lysobacter enzymogenes has shown a broad-spectrum of antifungal activities. However, little is known about its mode of action. In this study, we used the model filamentous fungus Neurospora crassa to investigate the antifungal mechanism of HSAF. We first used HSAF to treat the N. crassa strain at different time points. Spore germination, growth phenotype and differential gene expression analysis were conducted by utilizing global transcriptional profiling combined with genetic and physiological analyses. Our data showed that HSAF could significantly inhibit the germination and aerial hyphae growth of N. crassa. RNA-seq analysis showed that a group of genes, associated with cell wall formation and remodeling, were highly activated. Screening of N. crassa gene deletion mutants combined with scanning electron microscopic observation revealed that three fungal cell wall integrity-related genes played an important role in the interaction between N. crassa and L. enzymogens. In addition, Weighted Gene Co-Expression Network Analysis (WGCNA), accompanied by confocal microscopy observation revealed that HSAF could trigger autophagy-mediated degradation and eventually result in cell death in N. crassa. The findings of this work provided new insights into the interactions between the predatory Lysobacter and its fungal prey.
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