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Tomato leaf curl New Delhi virus:an emerging plant begomovirus threatening cucurbit production

aBIOTECH 2023年第3期4卷 257-266页

作者： Lingmin Cai Yuzhen Mei Ruyi Ye Yun Deng Xuejun Zhang Zhongyuan Hu Xueping Zhou Mingfang Zhang Jinghua Yang Laboratory of Germplasm Innovation and Molecular Breeding Institute of Vegetable ScienceZhejiang UniversityHangzhou 310058China Institute of Biotechnology Zhejiang UniversityHangzhou 310058China Peking University Institute of Advanced Agricultural Sciences Weifang 261000China Hami Melon Research Center Xinjiang Academy of Agricultural SciencesUrumqi 830091China Hainan Institute Zhejiang UniversityYazhou Bay Science and Technology CitySanya 572025China Key Laboratory of Horticultural Plant Growth and Development Ministry of Agriculture and Rural AffairsHangzhou 310058China

Tomato leaf curl New Delhi virus(ToLCNDV),a bipartite begomovirus,was first reported to infect tomato and has recently spread rapidly as an emerging disease to Cucurbitaceae *** date,the virus has been reported to infect more than 11 cucurbit crops,in 16 countries and regions,causing severe yield *** autumn 2022,ToLCNDV was first isolated from cucurbit plants in Southeastern coastal areas of *** analysis established that these isolates belong to the Asian ToLCNDV clade,and shared high nucleotide identity and closest genetic relationship with the DNA-A sequence from the Chinese tomato-infecting ToLCNDV isolate(Accession ***356207)and the tomato New Delhi ToLCNDV-Severe isolate(Accession ***159454).In this review,we summarize the occurrence and distribution,host range,detection and diagnosis,control strategies,and genetic resistance of ToLCNDV in the *** then summarize pathways that could be undertaken to improve our understanding of this emerging disease,with the objective to develop ToLCNDV-resistant cucurbit cultivars.

关键词： Tomato leaf curl New Delhi virus cucurbits Emerging virus disease Genetic resistance

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Cucurbit Host Range of <i>Myrothecium roridum</i>Isolated from Watermelon

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American Journal of Plant Sciences 2012年第3期3卷 353-359页

作者： Wayne W. Fish Benny D. Bruton Thomas W. Popham USDA-ARS Stillwater USA Wes Watkins Agricultural Research Laboratory USDA-ARS Lane USA

In 2010, a foliar and stem-lesion disease that produced moderate to severe defoliation of watermelon was observed in the southern Great Plains. The disease was ultimately determined to be caused by Myrothecium roridum. The objective of this study was to compare the susceptibility of the vegetation and fruit of a broad range of commercially important cucurbits to three isolates obtained from these foliar lesions on watermelon. In greenhouse foliar inoculation experiments, cantaloupe, honeydew, cucumber, squash, and watermelon were susceptible to the fungus with cantaloupe and honeydew being the most susceptible and watermelon the most resistant. Furthermore, greenhouse inoculations supported earlier field observations as differential resistance was exhibited among the watermelon cultivars as well as the cucurbit types. All tested cucurbit fruit exhibited interior lesions when inoculated sub-epidermally with M. roridum isolates. However, natural infection of watermelon and pumpkin fruit has never been reported.

关键词： Myrothecium roridum Watermelon Leaf and Stem Blight cucurbits

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