The G-protein subunits FGA2 and FGB1 play distinct roles in development and pathogenicity in the banana fungal pathogen Fusarium oxysporum f. sp cubense

被引：23
|
作者：
Guo, Lijia [1 ,2 ]
Yang, Laying [1 ,2 ]
Liang, Changcong [1 ,2 ]
Wang, Jun [1 ,2 ]
Liu, Lei [1 ,2 ]
Huang, Junsheng [1 ,2 ]
机构：
[1] Minist Agr, Key Lab Integrated Pest Management Trop Crops, Beijing, Peoples R China
[2] Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China
来源：
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY | 2016年 / 93卷
基金：
中国国家自然科学基金;
关键词：
Fusarium oxysporum f. sp cubense; Musa spp; G-protein subunits; Pathogenicity; Cyclic AMP-dependent protein kinase A pathway; KELCH-REPEAT PROTEINS; BETA-SUBUNIT; ALPHA-SUBUNIT; ADENYLATE-CYCLASE; NEUROSPORA-CRASSA; SACCHAROMYCES-CEREVISIAE; TARGETED DISRUPTION; MAGNAPORTHE-GRISEA; MUSA SPP; KINASE-A;
D O I：
10.1016/j.pmpp.2015.12.003
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The soil-borne fungus Fusarium oxysporum f. sp. cubense causes banana ( Musa spp.) vascular wilt. Here, we examine the roles of G-protein alpha and beta subunit genes fga2 and fgb1 in F. oxysporum development and pathogenicity. Deletion of either or both genes led to increased heat resistance, lower cAMP levels, and enhanced pigmentation, whereas phenotypic defects of colony morphology and reduced conidiation were seen in Delta fgb1 and Delta fga2/Delta fgb1 deletion strains but not in Delta fga2. Conversely, Delta fgb1 retained greater virulence against banana, suggesting that FGA2 regulates fungal virulence whereas FGB1 modulates both development and virulence, potentially via the cAMP-dependent protein kinase A pathway. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：29 / 38
页数：10
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