The present application belongs to the field of
plant disease control research, and relates to a cucumber multi-host coelomyces
effector protein CcSP1, a coding
gene thereof and application. The present application provides a new cucumber multi-host coelomyces
effector protein CcSP1, a coding
gene thereof and application. The
nucleotide sequence of the coding
gene of the multi-host coelomyces
effector protein CcSP1 is shown as SEQ ID NO. 1. Transient expression of the CcSP1 gene in N. benthamiana can inhibit hypersensitive
necrosis caused by N. benthamiana. A
gene deletion mutant ΔCcSP1 is constructed by
homologous recombination, and the deletion of the gene does not affect the vegetative growth, but significantly reduces the
pathogenicity when invading the cucumber leaves. It is shown that CcSP1 is involved in the
lesion expansion of the
plant after the invasion of the multi-host coelomyces, and plays an important role in the pathogenic process of the multi-host coelomyces. The present application has important significance for analyzing the related
molecular mechanism of cucumber coelomyces
leaf spot and establishing the comprehensive control technology strategy of the
plant cucumber coelomyces
leaf spot.