AI Article Synopsis
- Slt2 is essential for regulating several key processes in plant fungi, including growth, cell wall integrity, and pathogenicity.
- A gene ortholog identified in this study was knocked out, leading to defects in spore morphology, vegetative growth, and sporulation in the mutant strain.
- This Δ strain exhibited reduced virulence, lower melanin accumulation, and was sensitive to cell wall inhibitors, highlighting the gene's critical role in infection structure formation and overall fungal pathogenicity.
Article Abstract
Slt2 is an important component of the Slt2-MAPK pathway and plays critical regulatory roles in growth, cell wall integrity, melanin biosynthesis, and pathogenicity of plant fungi. , an ortholog of the gene, was identified from in this study, and its function was clarified by knockout of the gene. The Δ strain of was found to be defective in spore morphology, vegetative growth, and sporulation. Analysis of gene expression showed that expression of the gene was significantly up-regulated during infection structure formation of on hydrophobic and pear wax extract-coated surfaces. Further tests on onion epidermis confirmed that spore germination was reduced in the Δ strain, together with decreased formation of appressorium and infection hyphae. Moreover, the Δ strain was sensitive to cell wall inhibitors, and showed significantly reduced virulence on pear fruit. Furthermore, cell wall degradation enzyme (CWDE) activities, melanin accumulation, and toxin biosynthesis were significantly lower in the Δ strain. Overall, the findings demonstrate the critical involvement of in growth regulation, stress adaptation, infection structure formation, and virulence in .
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11595810 | PMC |
| http://dx.doi.org/10.3390/jof10110774 | DOI Listing |
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