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Xylella and Xanthomonas Mobil'omics.
Claudia B Monteiro-Vitorello1, Mariana C de Oliveira, Marcelo M Zerillo
1Labinfo-LNCC, Petrópolis, RJ, Brazil.
Omics : a Journal of Integrative Biology
|June 23, 2005
Summary
Genomic analysis reveals mobile genetic elements like insertion sequences, phages, and plasmids significantly drive the evolution of plant pathogens Xanthomonas and Xylella.
Area of Science:
- Microbiology
- Genomics
- Plant Pathology
Background:
- Xanthomonadales, including Xanthomonas and Xylella, are significant plant pathogens.
- Comparative genomics reveals conserved chromosome backbones between these genera.
- Genomic variations are often associated with mobile genetic elements.
Purpose of the Study:
- To investigate the types and contributions of mobile genetic elements in Xanthomonas and Xylella genomes.
- To understand the role of these elements in the genome evolution of these plant pathogens.
Main Methods:
- Whole genome sequencing of Xanthomonas and Xylella species.
- Comparative genomic analyses to identify conserved regions and variations.
- Characterization of mobile genetic elements, including insertion sequences, phage-related regions, and plasmids.
Main Results:
- High chromosome backbone identity and co-linearity observed between Xanthomonas and Xylella.
- Genomic differences are primarily located in genomic islands delimited by mobile elements.
- Xanthomonas genomes show multiple insertions of insertion sequence (IS) elements.
- Xylella genomes are characterized by abundant phage-related regions.
- Various plasmids were identified within the studied bacterial populations.
Conclusions:
- Mobile genetic elements, including transposable elements (insertion sequences), phages, and plasmids, are crucial drivers of genome evolution in Xanthomonas and Xylella.
- Understanding these elements is key to comprehending the pathogenicity and evolution of these plant pathogens.