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Comparative proteomics of sugarcane smut fungus - Sporisorium scitamineum unravels dynamic proteomic alterations during the dimorphic transition

ABSTRACT: Dimorphic fungi have the ability to change morphology during their lifecycle, a crucial feature for the establishment of infection and fungal growth and development in planta. Life cycle of the dimorphic sugarcane smut fungi, Sporisorium scitamineum, involves recognition and mating of compatible saprophytic yeast-like haploid sporidia (MAT-1 and MAT-2) that upon fusion, develop into infective dikaryotic mycelia. Although the dimorphic transition is intrinsically linked with the pathogenicity and virulence of S. scitamineum, it has never been studied using a proteomics approach. In the present study, an iTRAQ-based comparative proteomic analysis of three distinct stages covering the dimorphic transition period - haploid sporidial stage (MAT-1 and MAT-2) to the transition phase (24 hours post co-culturing (hpc)) and dikaryotic mycelial stage (48 hpc) was carried out. Functional categorization showed that the most altered biological processes were energy production, primary metabolism especially carbohydrate, amino acid, fatty acid, followed by translation, post-translation and protein turnover. The identified proteins could be grouped into 8 distinct clusters with different trends in abundance. Enrichment analysis of the clusters showed that biological processes related to energy production through oxidative phosphorylation, citrate cycle, and β-oxidation, transcription, translation and redox homeostasis were specifically altered. In addition, an overall downregulation of carbohydrate metabolism and reprogrammed amino acid metabolism were observed. Several differentially abundant proteins (DAPs), especially in the dikaryotic mycelial stage were predicted as effectors. Taken together, key molecular mechanisms underpinning the dimorphic transition in S. scitamineum at the proteome level were highlighted. A catalogue of stage-specific and dimorphic transition-associated -proteins and potential effectors identified herein are potential candidates for defective mutant screening to elucidate their functional role in the dimorphic transition and pathogenicity in S. scitamineum.

INSTRUMENT(S): LTQ Orbitrap

ORGANISM(S): Sporisorium Scitamineum

SUBMITTER: Giorgio Arrigoni

LAB HEAD: Giorgio Arrigoni

PROVIDER: PXD043431 | Pride | 2024-06-27

REPOSITORIES: Pride

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			Action	DRS
	10Oct2019_MIX_1_SCX_100mM.raw	Raw
	10Oct2019_MIX_1_SCX_100mM_ExclList.raw	Raw
	10Oct2019_MIX_1_SCX_200mM.raw	Raw
	10Oct2019_MIX_1_SCX_350mM.raw	Raw
	10Oct2019_MIX_2_SCX_100mM.raw	Raw

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Comparative proteomics of sugarcane smut fungus - Sporisorium scitamineum unravels dynamic proteomic alterations during the dimorphic transition.

Kumaravel Nalayeni N Ebinezer Leonard Barnabas LB Ashwin N M R NMR Franchin Cinzia C Battisti Ilaria I Carletti Paolo P Ramesh Sundar Amalraj A Masi Antonio A Malathi Palaniyandi P Viswanathan Rasappa R Arrigoni Giorgio G

Journal of proteomics 20240618

Life cycle of the dimorphic sugarcane smut fungi, Sporisorium scitamineum, involves recognition and mating of compatible saprophytic yeast-like haploid sporidia (MAT-1 and MAT-2) that upon fusion, develop into infective dikaryotic mycelia. Although the dimorphic transition is intrinsically linked with the pathogenicity and virulence of S. scitamineum, it has never been studied using a proteomic approach. In the present study, an iTRAQ-based comparative proteomic analysis of three distinct stages ...[more]

PMID: 38901800

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