Dataset Information

E-TABM-573

ABSTRACT: Transcription profiling of wild type and delta-sba1 yeast treated with radicicol to study gene regulation by sba1

PROVIDER: E-TABM-573 | ExpressionAtlas | 2015-11-02

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-TABM-573-analysis-methods.tsv	Tabular
	E-TABM-573-atlasExperimentSummary.Rdata	Rdata
	E-TABM-573-configuration.xml	Xml
	E-TABM-573-percentile-ranks.tsv	Tabular
	E-TABM-573.condensed-sdrf.tsv	Tabular

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Project description:Pmk1, a highly conserved pathogenicity-related mitogen-activated protein kinase (MAPK) in pathogenic fungi, is phosphorylated and activated by MAP2K and acts as a global regulator of fungal infection and invasive growth by modulating downstream targets. However, the hierarchical CcPmk1 regulatory network in Cytospora chrysosperma, the main causal agent of canker disease in many woody plant species, is still unclear. In this study, we analyzed and compared the phosphoproteomes and metabolomes of ΔCcPmk1 and wild-type strains and identified pathogenicity-related downstream targets of CcPmk1. We found that CcPmk1 could interact with the downstream homeobox transcription factor CcSte12 and affect its phosphorylation. In addition, the ΔCcSte12 displayed defective phenotypes that were similar to yet not identical to that of the ΔCcPmk1 and included significantly reduced fungal growth, conidiation and virulence. Remarkably, CcPmk1 could phosphorylate proteins translated from a putative secondary metabolism-related gene cluster, which is specific to C. chrysosperma, and the phosphorylation of several peptides was completely abolished in the ΔCcPmk1. Functional analysis of the core gene (CcPpns1) in this gene cluster revealed its essential roles in fungal growth and virulence. Metabolomic analysis showed that amino acid metabolism and biosynthesis of secondary metabolites, lipids, and lipid-like molecules significantly differed between wild type and ΔCcPmk1. Importantly, most of the annotated lipids and lipid-like molecules were significantly downregulated in the ΔCcPmk1 compared to the wild type. Collectively, these findings suggest that CcPmk1 may regulate a small number of downstream master regulators to control fungal growth, conidiation and virulence in C. chrysosperma. Data availability:The proteomics data have been deposited into the ProteomeXchange Consortium via the PRIDE partner repository with the data set identifier <a href='https://www.ebi.ac.uk/pride/archive/projects/PXD032206' rel='noopener noreferrer' target='_blank'>PXD032206</a>.

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E-TABM-573

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