ISHS Acta Horticulturae 681: IV International Congress on Artichoke
FIRST REPORT OF TOMATO SPOTTED WILT VIRUS AFFECTING GLOBE ARTICHOKE IN CALIFORNIA, USA |
| Authors: | M. Vilchez, A.O. Paulus, J.W. Moyer, W.L. Schrader |
| Keywords: | host range, TSWV, symptoms, western blot analysis. |
| Abstract:
California’s globe artichoke crop has an approximate value of $70 million annually. Globe artichokes are grown along the California coast which has a moderate frost-free climate. In August 1999, artichoke plants with a virus-like disease were detected in an experimental growth regulator study plot at the University of California South Coast Research & Extension Center, Irvine, California. The Irvine area is known to have a high incidence of tomato spotted wilt virus (TSWV) as well as high population of thrips species which acts as its vector. The disease symptoms observed, were general plant and leaf stunting, leaf chlorosis, leaf and stem necrosis, and plant death. Indicator plants inoculated with sap of symptomatic artichoke leaf tissue, produced symptoms similar to those of tomato spotted wilt virus. The pathogen was subsequently identified as tomato spotted wilt virus using host range studies, observation of typical TSWV symptoms on host plants and western blot analysis. | |
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