First report of Botryosphaeria wangensis, Colletotrichum nymphaeae, Diaporthe eres, and Geotrichum candidum causing postharvest fruit rot of plums (Prunus salicina) in China

Plums (Prunus salicina) are highly valued for their diverse flavors and nutritional benefits, making them essential ingredients in processed foods such as juices and jams, making them one of the world's most popular fruits. However, their postharvest short shelf life, compounded by rapid deterioration and rot, presents significant challenges to maintaining fruit quality and extending shelf stability, resulting in substantial economic losses for the industry. This study employed both morphological and molecular biology approaches to identify and characterize pathogens from diseased plum samples collected in major production regions. Key pathogens responsible for postharvest fruit rot in plums in Guizhou, China, were identified as Botryosphaeria wangensis, Colletotrichum nymphaeae, Diaporthe eres, and Geotrichum candidum. The comprehensive identification of these causative agents is crucial for developing targeted disease management strategies. This research contributes crucial insights for enhancing plum quality and extending shelf stability in the industry, addressing essential needs in fruit preservation and economic sustainability. •Identified key pathogens causing plum postharvest rot in GuizhouProvince, China.•Utilized morphological and molecular biology for pathogen identification.•Reported four new plum pathogens in China.