Chen Xia, Liu Hao, Dong Lanlan, Shi Junrui, Ma Zhonghua, Yan Leiyan, Yin Yanni
Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
Ningbo Academy of Agricultural Sciences, Ningbo 315040, China.
Plants (Basel). 2025 Mar 8;14(6):845. doi: 10.3390/plants14060845.
In 2022, an outbreak of fungal rot disease affected luffa crops in Shanghai and Zhejiang Province. Infected plants exhibited symptoms including yellowing, chlorosis, wilting, and water-soaked occurred on leaves and fruits. Dark brown, concave lesions developed, often accompanied by white or pale pink mold under moist conditions. Fourteen pathogen strains, morphologically resembling species, were isolated. Molecular analysis confirmed as the causative agent. Pathogenicity tests on luffa plants fulfilled Koch's postulates, with inoculated plants displaying the same symptoms. Re-isolation of the fungus from the inoculated plants confirmed its role in the disease. To our knowledge, this is the first report of causing leaf spot and fruit rot on luffa in China. Moreover, the soil bacterial strain BV171 displayed strong inhibition of mycelia growth and promoted the growth of sponge gourd plants. These findings lay the foundation for the development of diagnostic tools, disease management strategies, and the breeding of resistant luffa varieties.
2022年，上海和浙江省的丝瓜作物爆发了真菌性腐烂病。受感染的植株出现叶片和果实发黄、褪绿、萎蔫以及水渍状等症状。形成了深褐色的凹陷病斑，在潮湿条件下常伴有白色或浅粉色霉层。分离出了14个形态上类似该种的病原菌菌株。分子分析证实其为致病因子。对丝瓜植株进行的致病性测试符合科赫法则，接种的植株表现出相同症状。从接种植株上再次分离出该真菌证实了其在病害中的作用。据我们所知，这是在中国首次报道该菌引起丝瓜叶斑病和果实腐烂病。此外，土壤细菌菌株BV171对该菌的菌丝生长表现出强烈抑制作用，并促进了丝瓜植株的生长。这些发现为开发诊断工具、病害管理策略以及培育抗丝瓜品种奠定了基础。
