title: Xylella and Xanthomonas Mobil'omics.
abstract: The gamma-proteobacterium Xanthomonadales groups two closely related genera of plant pathogens, Xanthomonas and Xylella. Whole genome sequencing and comparative analyses disclosed a high degree of identity and co-linearity of the chromosome backbone between species and strains. Differences observed are usually clustered into genomic islands, most of which are delimited by genetic mobile elements. Focus is given in this paper to describe which groups of mobile elements are found and what is the relative contribution of these elements to Xanthomonas and Xylella genomes. Insertion sequence (IS) elements have invaded the Xanthomonas genome several times, whereas Xylella is rich in phage-related regions. Also, different plasmids are found inhabiting the bacterial cells studied here. Altogether, these results suggest that the integrative elements such as phages and transposable elements as well as the episomal plasmids are important drivers of the genome evolution of this important group of plant pathogens.
authors.affiliation: Labinfo-LNCC, Petrópolis, RJ, Brazil.
authors.forename: Claudia B
authors.initials: CB
authors.lastname: Monteiro-Vitorello
authors.forename: Mariana C
authors.initials: MC
authors.lastname: de Oliveira
authors.forename: Marcelo M
authors.initials: MM
authors.lastname: Zerillo
authors.forename: Alessandro M
authors.initials: AM
authors.lastname: Varani
authors.forename: Edwin
authors.initials: E
authors.lastname: Civerolo
authors.forename: Marie-Anne
authors.initials: MA
authors.lastname: Van Sluys
mesh_terms: D000595:Amino Acid Sequence; D001435:Bacteriophages / Q000235:genetics; D001483:Base Sequence; D004251:DNA Transposable Elements / Q000235:genetics; D004269:DNA, Bacterial / Q000235:genetics; D016680:Genome, Bacterial; D008969:Molecular Sequence Data; D010802:Phylogeny; D010957:Plasmids / Q000235:genetics; D039002:Prophages / Q000235:genetics; D018626:Retroelements; D013045:Species Specificity; D014974:Xanthomonas / Q000145:classification / Q000235:genetics* / Q000821:virology; D044167:Xylella / Q000145:classification / Q000235:genetics* / Q000821:virology
chemical_list: D004251:DNA Transposable Elements; D004269:DNA, Bacterial; D018626:Retroelements