The MAP kinase FvHog1 regulates FB1 synthesis and Ca 2+homeostasis in Fusarium verticillioides
文献类型： 外文期刊
作者： Xia, Haoxue 1 ; Xia, Xinyao 1 ; Guo, Min 2 ; Liu, Wende 1 ; Tang, Guangfei 1 ;
作者机构： 1.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China
2.Anhui Agr Univ, Anhui Higher Educ Inst, Coll Plant Protect, Key Lab Biol & Sustainable Management Plant Dis &, Hefei 230036, Peoples R China
关键词： Fusarium verticillioides; Hog1-MAPK pathway; FB1; Pathogenicity; Ca 2+homeostasis
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：12.2； 五年影响因子：11.9 ）
ISSN： 0304-3894
年卷期： 2024 年 473 卷
页码：
收录情况： SCI
摘要： The high osmolarity glycerol 1 mitogen-activated protein kinase (Hog1-MAPK) cascade genes are important for diverse biological processes. The activated Hog1 upon multiple environmental stress stimuli enters into the nucleus where it directly phosphorylates transcription factors to regulate various physiological processes in phytopathogenic fungi. However, their roles have not been well-characterized in Fusarium verticillioides . In this study, FvHog1 is identified and functionally analyzed. The findings reveal that the phosphorylation level and nuclear localization of FvHog1 are increased in Fumonisin B1 (FB1)-inducing condition to regulate the expression of FB1 biosynthesis FUM genes. More importantly, the deletion mutants of Hog1-MAPK pathway show increased sensitivity to Ca 2 + stress and elevated intracellular Ca 2 + content. The phosphorylation level and nuclear localization of FvHog1 are increased with Ca 2 + treatment. Furthermore, our results show that FvHog1 can directly phosphorylate Ca 2 + -responsive zinc finger transcription factor 1 (FvCrz1) to regulate Ca 2 + homeostasis. In conclusion, our findings indicate that FvHog1 is required for FB1 biosynthesis, pathogenicity and Ca 2 + homeostasis in F. verticillioides . It provides a theoretical basis for effective prevention and control maize ear and stalk rot disease.
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