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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Differentiation of the Xanthomonas hortorum – Xanthomonas hydrangeae species complex using sensitive and selective LAMP assays
Authors: Dia, Nay C.
Cottyn, Bart
Blom, Jochen
Smits, Theo H. M.
Pothier, Joël F.
et. al: No
DOI: 10.3389/fagro.2022.898778
Published in: Frontiers in Agronomy
Volume(Issue): 4
Issue: 898778
Issue Date: 1-Jun-2022
Publisher / Ed. Institution: Frontiers Research Foundation
ISSN: 2673-3218
Language: English
Subjects: Singleton; Bacterial leaf spot; Diagnostic method; Natural infection; Hydrangea
Subject (DDC): 572: Biochemistry
579: Microbiology
Abstract: The seven pathovars of Xanthomonas hortorum and Xanthomonas hydrangeae, referred to as the X. hortorum – X. hydrangeae species complex, cause disease on a multitude of plants, including crops, ornamental and wild plants. Cross-pathogenicity was proven for some of the strains within this species complex. It is thus important to have highly specific and fast diagnostics methods for members of the X. hortorum – X. hydrangeae species complex. A comparative genomic analysis was conducted for representative members within the complex to identify singletons for use as genomic targets for the assays. Seven loop-mediated isothermal amplification (LAMP) diagnostics assays were developed for the detection of six clades within the X. hortorum – X. hydrangeae species complex, in addition to one assay specific for the entire species complex. Primer sets were tested on a set of 62 reference strains. The primer sets amplified their respective targets within 15 minutes. Based on the reference set, all assays had a sensitivity, specificity, and efficiency of 100%. The assays were used on a validation set of 60 strains. According to the LAMP results, out of the 60 strains, 39 strains were assigned to one of the clades within the complex, 9 were assigned to the complex but to yet undefined clades within the complex, and 12 strains were previously misclassified as X. hortorum since their genomic DNA did not yield amplification with any of the assays. The seven genome-based assays are promising for use as diagnostic tools for various members within the X. hortorum – X. hydrangeae species complex, and for assigning new and historical isolates to this complex.
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: Xhortomics: Entwicklung von diagnostischen und epidemiologischen Hilfsmitteln für die Xanthomonas hortorum Spezies Gruppe basierend auf OMICs Technologien
Appears in collections:Publikationen Life Sciences und Facility Management

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