The Arrestin-like Protein palF Contributes to Growth, Sporulation, Spore Germination, Osmolarity, and Pathogenicity of Coniella vitis
文献类型： 外文期刊
作者： Yin, Xiangtian 1 ; Chen, Zihe 2 ; Li, Tinggang 1 ; Liu, Qibao 1 ; Jiang, Xilong 1 ; Han, Xing 1 ; Wang, Chundong 1 ; Wei, Yanfeng 1 ; Yuan, Lifang 1 ;
作者机构： 1.Shandong Acad Agr Sci, Shandong Acad Grape, Jinan 250100, Peoples R China
2.Hebei Univ Engn, Sch Landscape & Ecol Engn, Handan 056038, Peoples R China
关键词： Coniella vitis; palF; RNA interference; growth; virulence
期刊名称：JOURNAL OF FUNGI （ 影响因子：4.2； 五年影响因子：4.5 ）
ISSN：
年卷期： 2024 年 10 卷 7 期
页码：
收录情况： SCI
摘要： Coniella vitis is a dominant phytopathogen of grape white rot in China, significantly impacting grape yield and quality. Previous studies showed that the growth and pathogenicity of C. vitis were affected by the environmental pH. Arrestin-like protein PalF plays a key role in mediating the activation of an intracellular-signaling cascade in response to alkaline ambient. However, it remains unclear whether palF affects the growth, development, and virulence of C. vitis during the sensing of environmental pH changes. In this study, we identified a homologous gene of PalF/Rim8 in C. vitis and constructed CvpalF-silenced strains via RNA interference. CvpalF-silenced strains exhibited impaired fungal growth at neutral/alkaline pH, accompanied by reduced pathogenicity compared to the wild-type (WT) and empty vector control (CK) strains. The distance between the hyphal branches was significantly increased in the CvpalF-silenced strains. Additionally, CvpalF-silenced strains showed increased sensitivity to NaCl, H2O2, and Congo red, and decreased sensitive to CaSO4. RT-qPCR analysis demonstrated that the expression level of genes related to pectinase and cellulase were significantly down-regulated in CvpalF-silenced strains compared to WT and CK strains. Moreover, the expression of PacC, PalA/B/C/F/H/I was directly or indirectly affected by silencing CvpalF. Additionally, the expression of genes related to plant cell wall-degrading enzymes, which are key virulence factors for plant pathogenic fungi, was regulated by CvpalF. Our results indicate the important roles of CvpalF in growth, osmotolerance, and pathogenicity in C. vitis.
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