Sit4-associated protein is required for pathogenicity of Leptosphaeria maculans on Brassica napus

Andrew S. Urquhart, Alexander Idnurm*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

An insertional mutant with reduced pathogenicity on Brassica napus was identified in the plant pathogenic fungus Leptosphaeria maculans. The transfer-DNA molecule from Agrobacterium tumefaciens inserted into a gene encoding a protein with similarity to Sit4-associated proteins (SAPs). In contrast to Saccharomyces cerevisiae which has four members of the SAP family, there is a single copy of the gene in L. maculans. The mutant had normal spore production and spore germination, but altered hyphal branching, suggesting that nutrient signaling is impaired in the strain. This is the first time that a SAP gene has been mutated in a filamentous fungus and links the function of SAP proteins to plant pathogenesis and hyphal branching.
Original languageEnglish
Pages (from-to)1438–1446
Number of pages9
JournalCurrent Microbiology
Volume74
Issue number12
DOIs
Publication statusPublished - Dec 2017
Externally publishedYes

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