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Botrytis cinerea  is a necrotrophic pathogen that infects many important crops. In an attempt to unravel some novel factors that govern pathogenicity in  B. cinerea ,  Agrobacterium tumefaciens  mediated transformation (ATMT) was deployed, and a number of tagged transformants were generated. Among these, a mutant, BCM-29 exhibited slower growth rate, reduced conidia size, conidiation and penetration. The mutant was also defective in secretion of oxalic acid (OA) and exhibited reduced activities of polygalacturonase (PG) and pectin methyl esterases (PME). TAIL-PCR followed by BLAST search identified the tagged gene as  KLP-7  that encodes for kinesin. Targeted deletion of  KLP-7  resulted in several folds decrease in virulence of mutants as compared to WT, while complementation of the gene helped in rescue of virulence traits. This is the first time when a unique kinesin  KLP-7  that is mainly found in the phylum Pezizomycotina has been linked to virulence in  B. cinerea .

A Botrytis cinerea KLP-7 Kinesin acts as a Virulence Determinant during Plant Infection