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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: DNA markers for detection and genotyping of Xanthomonas euroxanthea
Authors: Silva, Kayla Gisela
Martins, Leonor
Teixeira, Miguel
Pothier, Joël F.
Tavares, Fernando
et. al: No
DOI: 10.3390/microorganisms10061078
Published in: Microorganisms
Volume(Issue): 10
Issue: 6
Page(s): 1078
Issue Date: 24-May-2022
Publisher / Ed. Institution: MDPI
ISSN: 2076-2607
Language: English
Subjects: Xanthomonas euroxanthea; Taxon-specific DNA marker; Multiplex PCR; Comparative genomics; Genotyping
Subject (DDC): 572: Biochemistry
579: Microbiology
Abstract: Xanthomonas euroxanthea is a bacterial species encompassing both pathogenic and non-pathogenic strains and is frequently found colonizing the same host plants as X. arboricola. This presents the need to develop a detection and genotyping assay able to track these bacteria in microbial consortia with other xanthomonads. Eight X. euroxanthea-specific DNA markers (XEA1-XEA8) were selected by comparative genomics and validated in silico regarding their specificity and consistency using BLASTn, synteny analysis, CG content, codon usage (CAI/eCAI values) and genomic proximity to plasticity determinants. In silico, the selected eight DNA markers were found to be specific and conserved across the genomes of 11 X. euroxanthea strains, and in particular, five DNA markers (XEA4, XEA5, XEA6, XEA7 and XEA8) were unfailingly found in these genomes. A multiplex of PCR targeting markers XEA1 (819 bp), XEA8 (648 bp) and XEA5 (295 bp) was shown to successfully detect X. euroxanthea down to 1 ng of DNA (per PCR reaction). The topology of trees generated with the concatenated sequences of three markers (XEA5, XEA6 and XEA8) and four housekeeping genes (gyrB, rpoD, fyuA and acnB) underlined the equal discriminatory power of these features and thus the suitability of the DNA markers to discriminate X. euroxanthea lineages. Overall, this study displays a DNA-marker-based method for the detection and genotyping of X. euroxanthea strains, contributing to monitoring for its presence in X. arboricola-colonizing habitats. The present study proposes a workflow for the selection of species-specific detection markers. Prospectively, this assay could contribute to unveil alternative host species of Xanthomonas euroxanthea; and improve the control of phytopathogenic strains.
Further description: Related publications:,
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Published as part of the ZHAW project: Comparative genomics of the plant pathogen Xanthomonas arboricola pv. pruni and related xanthomonads
Appears in collections:Publikationen Life Sciences und Facility Management

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Silva, K. G., Martins, L., Teixeira, M., Pothier, J. F., & Tavares, F. (2022). DNA markers for detection and genotyping of Xanthomonas euroxanthea. Microorganisms, 10(6), 1078.
Silva, K.G. et al. (2022) ‘DNA markers for detection and genotyping of Xanthomonas euroxanthea’, Microorganisms, 10(6), p. 1078. Available at:
K. G. Silva, L. Martins, M. Teixeira, J. F. Pothier, and F. Tavares, “DNA markers for detection and genotyping of Xanthomonas euroxanthea,” Microorganisms, vol. 10, no. 6, p. 1078, May 2022, doi: 10.3390/microorganisms10061078.
SILVA, Kayla Gisela, Leonor MARTINS, Miguel TEIXEIRA, Joël F. POTHIER und Fernando TAVARES, 2022. DNA markers for detection and genotyping of Xanthomonas euroxanthea. Microorganisms. 24 Mai 2022. Bd. 10, Nr. 6, S. 1078. DOI 10.3390/microorganisms10061078
Silva, Kayla Gisela, Leonor Martins, Miguel Teixeira, Joël F. Pothier, and Fernando Tavares. 2022. “DNA Markers for Detection and Genotyping of Xanthomonas Euroxanthea.” Microorganisms 10 (6): 1078.
Silva, Kayla Gisela, et al. “DNA Markers for Detection and Genotyping of Xanthomonas Euroxanthea.” Microorganisms, vol. 10, no. 6, May 2022, p. 1078,

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