| genetic analysis of a novel xylella fastidiosa subspecies found in the southwestern united states. | xylella fastidiosa, the causal agent of several scorch diseases, is associated with leaf scorch symptoms in chitalpa tashkentensis, a common ornamental landscape plant used throughout the southwestern united states. for a number of years, many chitalpa trees in southern new mexico and arizona exhibited leaf scorch symptoms, and the results from a regional survey show that chitalpa trees from new mexico, arizona, and california are frequently infected with x. fastidiosa. phylogenetic analysis of ... | 2009 | 19581467 |