Identification of VdASP F2-interacting Protein As a Regulator of Microsclerotial Formation in Verticillium Dahliae

Overview

Journal Microb Biotechnol

Specialties Biotechnology
Microbiology

Date 2022 Apr 28

PMID 35478269

Authors

Cuimei Guo

Xing Yang

Hongli Shi

Chi Chen

Zhijuan Hu

Xinyao Zheng

Xingyong Yang

Chengjian Xie

Affiliations

Soon will be listed here.

Abstract

Verticillium dahliae, a notorious phytopathogenic fungus, causes vascular wilt diseases in many plant species. The melanized microsclerotia enable V. dahliae to survive for years in soil and are crucial for its disease cycle. In a previous study, we characterized the secretory protein VdASP F2 from V. dahliae and found that VdASP F2 deletion significantly affected the formation of microsclerotia under adverse environmental conditions. In this study, we clarified that VdASP F2 is localized to the cell wall. However, the underlying mechanism of VdASP F2 in microsclerotial formation remains unclear. Transmembrane ion channel protein VdTRP was identified as a candidate protein that interacts with VdASP F2 using pull-down assays followed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis, and interaction of VdASP F2 and VdTRP was confirmed by bimolecular fluorescence complementary and coimmunoprecipitation assays. The deletion mutant was analysed to reveal that VdTRP is required for microsclerotial production, but it is not essential for stress resistance, carbon utilization and pathogenicity of V. dahliae. RNA-seq revealed some differentially expressed genes related to melanin synthesis and microsclerotial formation were significantly downregulated in the VdTRP deletion mutants. Taken together, these results indicate that VdASP F2 regulates the formation of melanized microsclerotia by interacting with VdTRP.

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Identification of VdASP F2-interacting protein as a regulator of microsclerotial formation in Verticillium dahliae.

Guo C, Yang X, Shi H, Chen C, Hu Z, Zheng X Microb Biotechnol. 2022; 15(7):2040-2054.

PMID: 35478269 PMC: 9249328. DOI: 10.1111/1751-7915.14066.

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