Lasiodiplodia pseudotheobromae causes pedicel and peduncle discolouration of grapes in China

摘要

A botryosphaeriaceous taxon causing fruit peduncle and pedicel discolouration was found infecting grapevines in Hubei and Jiangsu Provinces in China. Morphological and phylogenetic analyses showed the taxon to be Lasiodiplodia pseudotheobromae. Pathogenicity testing and Koch’s postulates proved that Lasiodiplodia pseudotheobromae caused fruit peduncle and pedicel discolouration on grape fruit clusters. This is the first report of this fungus causing grapevine fruit peduncle and pedicel discolouration worldwide.