| assessment of the genetic diversity of xylella fastidiosa isolated from citrus in brazil by pcr-rflp of the 16s rdna and 16s-23s intergenic spacer and rep-pcr fingerprinting. | the genetic diversity among twenty three strains of xylella fastidiosa, isolated from sweet orange citrus, was assessed by rflp analysis of the 16s rdna and 16s-23s intergenic spacer and by rep-pcr fingerprinting together with strains isolated from coffee, grapevine, plum and pear. the pcr products obtained by amplification of the 16s rdna and 16s-23s spacer region were digested with restriction enzymes and a low level of polymorphism was detected. in rep-pcr fingerprinting, a relationship betwe ... | 2001 | 11392484 |