Abstract
Publisher Summary Among the Acari, only the Eriophyoidea are important vectors of plant pathogens. Currently, about a dozen plant diseases are known to be caused by the agents that are transmitted by eriophyoids and all currently recognized vector species belong to one family, the Eriophyidae. The relationship between eriophyid vector and transmitted agent is highly specific. No plant pathogen is known to be transmitted by the members of any other taxa, nor by more than one species of eriophyid. Although evidence exists that both of the grass-infesting species, Aceria tulipae Keifer and Abacarus hystrix Nalepa, transmit more than one pathogen, the vectors of broad-leafed plant pathogens each transmit just one agent, and each pathogen of woody plants is transmitted by just one species of eriophyid. Wheat streak mosaic virus (WSMV) and its vector, A. tulipae , are found worldwide. Fig mosaic and its vector, Aceria ficus , occur wherever figs are grown commercially. The other pathogens of woody broad-leafed plants and their eriophyid vectors are limited regionally and are absent from the major areas where their hosts are grown.
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