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A xylem-limited bacterium resemblingXylella fastidiosa has been shown previously by electron mmcroscopy to be associated with citrus variegated chlorosis (CVC), a new disease of sweet organe tress in(More)
Conserved gene sequences, including 16S rRNA and ribosomal protein gene sequences, were used to evaluate genetic variations in phytoplasma strains belonging to 16S rRNA groups I (aster yellows and(More)
The species Pseudomonas syringae encompasses plant pathogens with differing host specificities and corresponding pathovar designations. P. syringae requires the Hrp (type III protein secretion)(More)