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Clg2p interacts with Clf and ClUrase to regulate appressorium formation, pathogenicity and conidial morphology in

Tong Liu1,2, Yuying Wang1, Bingchen Ma1

  • 1Institute of Plant Pathology and Applied Microbiology, School of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, P. R. China.

Scientific Reports
|April 5, 2016
PubMed

Insights

This study identifies the Clg2p Ras protein in Curvularia lunata, revealing its crucial role in fungal development and pathogenicity. Disrupting Clg2p impacts appressorium formation and virulence, highlighting its importance in fungal pathogenesis.

Area of Science:

  • Molecular biology
  • Mycology
  • Plant pathology

Background:

  • Ras proteins are key regulators of cellular development and morphogenesis.
  • Understanding Ras protein function is critical for controlling fungal pathogens.

Purpose of the Study:

  • To identify and functionally characterize the Clg2p gene, a Ras homolog in Curvularia lunata.
  • To elucidate the regulatory mechanism of Clg2p in fungal development and pathogenicity.

Main Methods:

  • Gene deletion and complementation in Curvularia lunata.
  • Yeast two-hybrid assay to identify interacting proteins.
  • Functional characterization of Clg2p and its interactors.

Main Results:

  • Clg2p deletion mutants exhibited defects in appressorium formation, conidial morphology, and pathogenicity.
  • Clg2p interacts with Clf (MAP kinase kinase kinase homolog) to regulate appressorium formation and pathogenicity.
  • Clg2p interacts with urate oxidase (ClUrase) to regulate conidial morphology, independent of pathogenicity.

Conclusions:

  • Clg2p is a key Ras protein regulating critical developmental processes and pathogenicity in Curvularia lunata.
  • Specific interactions of Clg2p with Clf and ClUrase mediate distinct cellular functions.

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