当前位置： SCI文献检索 > WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY期刊下所有文献 > The potential protein kinase A (Pka) phosphorylation site is required for the function of FgSge1 in Fusarium graminearum.

The potential protein kinase A (Pka) phosphorylation site is required for the function of FgSge1 in Fusarium graminearum.

Abstract：

:The new transcription factor Sge1 has garnered much attention in filamentous fungi recently, which highlights its role in pathogenicity, conidiation, and the production of secondary metabolites. In this study, we demonstrated that FgSge1 is localized in the nucleus in Fusarium graminearum using fluorescent protein GFP. Mutants containing a T67A mutation within the potential protein kinase A (Pka) phosphorylation site of FgSge1 exhibited a significant decrease in conidiation and dramatically impaired virulence on both wheat head and non-host tomato. These results indicated that the Pka phosphorylation site is required for the function of FgSge1 in F. graminearum. In addition, we characterized the FgSGE1 deletion mutants and found that the mutants showed increased sensitivity to osmotic stress mediated by NaCl or KCl, and to cell wall damaging agent congo red (CR). Real-time PCR assays revealed increased transcription levels of FgSGE1 with the treatment of NaCl or CR, and decreased FgSGE1 transcription in the FgOS-2 deletion mutant ΔFgOs-2. Based on the transcription levels, it can be concluded that FgSge1 is a downstream target of the mitogen-activated protein kinase FgOs-2.

journal_name

World J Microbiol Biotechnol

journal_title

World journal of microbiology & biotechnology

authors

Yu FW,Zhang XP,Yu MH,Yin YN,Ma ZH

doi

10.1007/s11274-015-1894-2

subject

Has Abstract

pub_date

2015-09-01 00:00:00

pages

1419-30

issue

9

eissn

0959-3993

issn

1573-0972

journal_volume

31

pub_type

杂志文章

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