ENVIRONMENTAL FATE OF A GENETICALLY MARKED ENDOPHYTE IN GRAPEVINES AND THE GLASSY-WINGED SHARPSHOOTER

• Author(s): Bextine, Blake; Miller, Thomas; Lampe, David; Lauzon, Carol; Richards, Frank;
• Abstract: A permit was obtained from EPA in late spring to conduct field trials in covered grapevines at three commercial vineyards and one experiment station in California. Alcaligenes xylosoxidans denitrificans (Axd) bacteria, modified to produce a fluorescent protein, were applied to grapevines by needle inoculation, foliar spray application, and soil drench. The plants were covered with insect-free screening, to exclude arthropods from test plants. Samples were taken throughout the growing season and are currently being processed. Grapevines at the Riverside field site were exposed to glassy-winged sharpshooters to test the affect of insect feeding on the translocation of Axd in grapevines. Samples from these plots are being analyzed. The results are too preliminary to report at this meeting.
• Publication Date: Aug 2003
• Journal: 2003 Pierce's Disease Research Symposium