Colletotrichum fructicola CfGti1 Transcriptionally Regulates Penetration, Colonization, and Pathogenicity on Apple.

ABSTRACT: Glomerella leaf spot (GLS), mainly caused by Colletotrichum fructicola, is a destructive disease of apple. However, the underlying pathogenesis mechanisms of GLS are still largely obscure. Previous infection transcriptome analysis showed that transcription factor CfGti1 was induced during leaf infection. The present study confirms that the CfGti1 gene is strongly expressed in conidia and early infection. To identify functions performed, we generated gene deletion mutant ΔCfGti1 by homologous recombination. Phenotypic analysis revealed that ΔCfGti1 lost pathogenicity to apple leaves by blocking appressorium-mediated host penetration, although penetration pegs still developed on cellophane. In addition, ΔCfGti1 colonization and hyphal extension in wounded a

SUBMITTER: Liu W 

PROVIDER: S-EPMC12842837 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature