Archives of Phytopathology and Plant Protection (2017) 50, 70-83

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Trinh Xuan Hoat, Mai Van Quan, La Van Hao, Tran Thi Chi, Dang Thi Lan Anh, Pham Van Son, Nguyen Nhu Cuong and Assunta Bertaccini (2017)
Association of Eriophyes dimocarpi (Acari: Eriophyidae) with longan witches' broom disease in Vietnam
Archives of Phytopathology and Plant Protection 50 (1-2), 70-83
Abstract: Longan witches' broom (LgWB) syndrome was observed in all longan-growing provinces of Vietnam. Key symptoms include: small, stunted shoots with curved, rolled up margins, deformed leaves with blisters and hairy patches on the underside; abnormal development of flower structures, flower abortion, failure to produce fruits or developing small fruits. During 2012–2015, field surveys and study of the relationship between LgWB symptoms and Eriophyes dimocarpi mites presence were carried out. Moreover, molecular analysis, electron microscopy observations, E. dimocarpi inoculations, pruning of affected spikelets and miticide experiments were performed. An average of 36.58% of longan seedlings inoculated with E. dimocarpi mites showed typical symptoms of LgWB at about 27.5 days after inoculation. The use of several pesticides in different combinations showed high efficacy on E. dimocarpi mites elimination and of symptomatology incidence reduction. These results suggest a significant association of E. dimocarpi with LgWB syndrome in Vietnam.
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Link to article at publishers website
Database assignments for author(s): Assunta Bertaccini, Trinh Xuan Hoat

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Eriophyes dimocarpi Longan (Dimocarpus longan) Vietnam