Gamliel-Atinsky E, Freeman S, Sztejnberg A, Maymon M, Ochoa R, Belausov E, Palevsky E
Department of Plant Pathology and Microbiology, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel.
Phytopathology. 2009 Feb;99(2):152-9. doi: 10.1094/PHYTO-99-2-0152.
The role of the mango bud mite, Aceria mangiferae, in carrying conidia of Fusarium mangiferae, vectoring them into potential infection sites, and assisting fungal infection and dissemination was studied. Following the mite's exposure to a green fluorescent protein-marked isolate, conidia were observed clinging to the mite's body. Agar plugs bearing either bud mites or the pathogen were placed on leaves near the apical buds of potted mango plants. Conidia were found in bud bracts only when both mites and conidia were co-inoculated on the plant, demonstrating that the mite vectored the conidia into the apical bud. Potted mango plants were inoculated with conidia in the presence or absence of mites. Frequency and severity of infected buds were significantly higher in the presence of mites, revealing their significant role in the fungal infection process. Conidia and mite presence were monitored with traps in a diseased orchard over a 2-year period. No windborne bud mites bearing conidia were found; however, high numbers of windborne conidia were detected in the traps. These results suggest that A. mangiferae can carry and vector conidia between buds and assist in fungal penetration but does not play a role in the aerial dissemination of conidia between trees.
研究了芒果芽螨（Aceria mangiferae）在携带芒果镰刀菌（Fusarium mangiferae）分生孢子、将其传播到潜在感染部位以及协助真菌感染和传播方面的作用。在将芽螨暴露于绿色荧光蛋白标记的分离株后，观察到分生孢子附着在芽螨的身体上。将带有芽螨或病原体的琼脂块放置在盆栽芒果树顶芽附近的叶片上。仅当螨和分生孢子同时接种到植物上时，才在芽鳞片中发现分生孢子，这表明芽螨将分生孢子传播到顶芽中。在有或没有芽螨的情况下，用分生孢子接种盆栽芒果树。在有芽螨的情况下，受感染芽的频率和严重程度显著更高，这揭示了它们在真菌感染过程中的重要作用。在一个患病果园中，用诱捕器对分生孢子和芽螨的存在情况进行了为期两年的监测。未发现携带分生孢子的随风传播的芽螨；然而，在诱捕器中检测到大量随风传播的分生孢子。这些结果表明，芒果芽螨可以在芽之间携带和传播分生孢子，并协助真菌穿透，但在树木之间分生孢子的空气传播中不起作用。
