Xylem-limited bacteria (XLB) were recovered from the sharpshooter leafhoppers, Homalodisca coagulata (Say), Oncometopia orbona (F.), and Paraulacizes irrorata (F.), and cultured on artificial agar medium. Seasonal occurrence of XLB in H. coagulata and its plant hosts were determined by in vitro isolations and enzyme-linked immunosorbent assays (ELISA) for XLB. XLB were recovered frequently from H. coagulata from numerous feeding hosts soon after they moved into peach orchards. Highest recoveries of XLB from host plants were from commercial plums, Prunus salicina L. (70.1%), that showed visible leaf scald symptoms, followed by peaches, Prunus persica (L. [Batsch[) (31.4%).
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Yonce et al. (1987) studied this question.