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Mutation of AREA affects growth, sporulation, nitrogen regulation, and pathogenicity in Colletotrichum gloeosporioides

文献类型： 外文期刊

作者： Bi, Fangcheng 1 ; Ment, Dana 4 ; Luria, Neta 4 ; Meng, Xiangchun 1 ; Prusky, Dov 4 ;

作者机构： 1.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou 510640, Guangdong, Peoples R China

2.Minist Agr, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangzhou 510640, Guangdong, Peoples R China

3.Key Lab Trop & Subtrop Fruit Tree Res, Guangzhou 510640, Guangdong, Peoples R China

4.Agr Res Org, Dept Postharvest Sci Fresh Produce, Volcani Ctr, IL-50250 Bet Dagan, Israel

关键词： Colletotrichum gloeosporioides;AreA homolog;Nitrogen regulation;Pathogenicity

期刊名称：FUNGAL GENETICS AND BIOLOGY （ 影响因子：3.495； 五年影响因子：3.831 ）

ISSN：

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收录情况： SCI

摘要： The GATA transcription factor AreA is a global nitrogen regulator that restricts the utilization of complex and poor nitrogen sources in the presence of good nitrogen sources in microorganisms. In this study, we report the biological function of an AreA homolog (the CgareA gene) in the fruit postharvest pathogen Colletotrichum gloeosporioides. Targeted gene deletion mutants of areA exhibited significant reductions in vegetative growth, increases in conidia production, and slight decreases in conidial germination rates. Quantitative RT-PCR (gRT-PCR) analysis revealed that the expression of AreA was highly induced under nitrogen-limiting conditions. Moreover, compared to wild-type and complemented strains, nitrogen metabolism-related genes were misregulated in Delta areA mutant strains. Pathogenicity assays indicated that the virulence of Delta areA mutant strains were affected by the nitrogen content, but not the carbon content, of fruit hosts. Taken together, our results indicate that CgareA plays a critical role in fungal development, conidia production, regulation of nitrogen metabolism and virulence in Colletotrichum gloeosporioides. (C) 2017 Elsevier Inc. All rights reserved.

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