1. Insertion sequence- and tandem repeat-based genotyping techniques for Xanthomonas citri pv. mangiferaeindicae.
- Author
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Pruvost O, Vernière C, Vital K, Guérin F, Jouen E, Chiroleu F, Ah-You N, and Gagnevin L
- Subjects
- Amplified Fragment Length Polymorphism Analysis, Asia, Australia, Bacterial Typing Techniques methods, Brazil, Comoros, DNA Footprinting, DNA, Bacterial chemistry, DNA, Bacterial genetics, France, Genetic Variation, Genotype, Mauritania, Molecular Epidemiology methods, Polymerase Chain Reaction methods, South Africa, Xanthomonas genetics, Xanthomonas pathogenicity, DNA Transposable Elements genetics, Mangifera microbiology, Plant Diseases microbiology, Tandem Repeat Sequences genetics, Xanthomonas classification
- Abstract
Molecular fingerprinting techniques that have the potential to identify or subtype bacteria at the strain level are needed for improving diagnosis and understanding of the epidemiology of pathogens such as Xanthomonas citri pv. mangiferaeindicae, which causes mango bacterial canker disease. We developed a ligation-mediated polymerase chain reaction targeting the IS1595 insertion sequence as a means to differentiate pv. mangiferaeindicae from the closely related pv. anacardii (responsible for cashew bacterial spot), which has the potential to infect mango but not to cause significant disease. This technique produced weakly polymorphic fingerprints composed of ≈70 amplified fragments per strain for a worldwide collection of X. citri pv. mangiferaeindicae but produced no or very weak amplification for pv. anacardii strains. Together, 12 tandem repeat markers were able to subtype X. citri pv. mangiferaeindicae at the strain level, distinguishing 231 haplotypes from a worldwide collection of 299 strains. Multilocus variable number of tandem repeats analysis (MLVA), IS1595-ligation-mediated polymerase chain reaction, and amplified fragment length polymorphism showed differences in discriminatory power and were congruent in describing the diversity of this strain collection, suggesting low levels of recombination. The potential of the MLVA scheme for molecular epidemiology studies of X. citri pv. mangiferaeindicae is discussed.
- Published
- 2011
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