The quarantine bacterium Xylella fastidiosa was first detected in Salento (Apulia, Italy) 2013 and caused severe symptoms olives, leading to plant death. disease, named Olive Quick Decline Syndrome (OQDS), is by the strain “De Donno” ST53 of subspecies pauca this (XfDD), which spread insect Philaenus spumarius. epidemic poses a serious threat agricultural economy landscape, as X. infects severa...

Some of us joined this Academy when Carlos Chagas was president. Upon meeting him for the first time, we knew that we were in the presence of a person of great vision, enormous integrity, and unquestioned dedication to science. His dedication to science had two foundations. One was his inherent fascination with the natural world. The second was his conviction that science could advance human we...

A ≈ 38kB plasmid (pXF-RIV5) was present in the Riv5 strain of Xylella fastidiosa subsp. multiplex isolated from ornamental plum in southern California. The complete nucleotide sequence of pXF-RIV5 is almost identical to that of pXFAS01 from X. fastidiosa subsp. fastidiosa strain M23; the two plasmids vary at only 6 nucleotide positions. BLAST searches and phylogenetic analyses indicate pXF-RIV5...

Xylella fastidiosa strain riv11 harbors a 25-kbp plasmid (pXF-RIV11) belonging to the IncP-1 incompatibility group. Replication and stability factors of pXF-RIV11 were identified and used to construct plasmids able to replicate in X. fastidiosa and Escherichia coli. Replication in X. fastidiosa required a 1.4-kbp region from pXF-RIV11 containing a replication initiation gene (trfA) and the adja...