Xylella fastidiosa in landscape trees
Xylella fastidiosa (EPPO A1 organism) mainly known as a pathogen of grapevine has been reported to infect landscape trees and is present on Quercus palustris and Q. rubra in 11 cities in the USA.
Investigations showed that the pathogen is distributed from New York in the North to Texas in the South. Diseased trees show a premature leaf browning and defoliation as well as marginal leaf necrosis.
Sources
Hartman, J.R.; Kaiser, C.A.; Jarlfors, V.E.; Eshenaur, B.C. (1991) Occurrence of oak bacterial leaf scorch caused by Xylella fastidiosa in Kentucky.
Plant Disease 75, 862.