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First Report of Pierce’s Disease in New Mexico

J. J. Randall, M. Radionenko, J. M. French, N. P. Goldberg, and S. F. Hanson

October 2007


In the fall of 2006, Vitis vinifera Chardonnay grapevines from two vineyards in southern New Mexico exhibited leaf scorch and dieback symptoms consistent with Pierce’s disease. ELISA, PCR, and culturing assays all detected the presence of Xylella fastidiosa in symptomatic tissue from both vineyards confirming Pierce’s disease in NM. Phylogenetic analysis indicates that isolates from NM grapes are closely related to a X. fastidiosa isolate recently found in the landscape plant Chitalpa tashkentensis in New Mexico.


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