Abstract:The data base on transmission of western X-disease agent (WXDA) by Colladonus montanus leafhoppers was expanded in studies using celery, Apium graveo/ens as the host. Transmission was affected or limited by the availability threshold, instar efficiency, and acquisition and inoculation rates, along with vector biotype and pathogen strain. Transmission also was moderated by circadian rhythms. Serial passage by injection of the pathogen into a, sequence of healthy insects was accomplished, and some evidence was o… Show more
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