Characterization of Emerging Xanthomonas campestris Isolates on the Nonnative Weed Garlic Mustard (Alliaria petiolata)

Nonnative plant infestations provide unique opportunities to investigate pathogen emergence with evolutionarily recent plant introduction events. The widespread distribution of invasive plants and their proximity to genetically related crops highlights the risks of nonnative plants acting as ancilla...

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Veröffentlicht in:Plant disease. - 1997. - 108(2024), 6 vom: 19. Juni, Seite 1418-1424
1. Verfasser: Tancos, Matthew A (VerfasserIn)
Weitere Verfasser: Harney-Davila, Gabriela, Cipollini, Don
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Brassica Xanthomonas Xanthomonas campestris Xanthomonas campestris pv. barbareae cabbage crucifers garlic mustard invasive weeds pathogen emergence
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520 |a Nonnative plant infestations provide unique opportunities to investigate pathogen emergence with evolutionarily recent plant introduction events. The widespread distribution of invasive plants and their proximity to genetically related crops highlights the risks of nonnative plants acting as ancillary hosts and fostering microbial recombination and pathogen selection. Garlic mustard (Alliaria petiolata) is a widespread, nonnative cruciferous weed that grows throughout North America and along the forested edges of diverse agricultural fields. The recent identification of a novel Xanthomonas campestris pv. incanae strain isolated from a diseased A. petiolata population led to the current investigation of the distribution and diversity of X. campestris isolates from naturally infected A. petiolata. A total of 14 diseased A. petiolata sites were sampled across three states, leading to the identification of diverse X. campestris pathotypes and genotypes. Pathogenicity assays and multilocus sequence analyses identified pathogenic X. c. pv. incanae and X. c. pv. barbareae strains collected from disparate A. petiolata populations. Moreover, independently collected X. c. pv. incanae strains demonstrated a broad cruciferous host range by infecting cabbage (Brassica oleracea var. capitata), garden stock (Matthiola incana), and the cover crop yellow mustard (Guillenia flavescens). This study highlights the genetic variability and host potential of natural X. campestris populations and the potential risks to Brassica crops via widespread, dense garlic mustard reservoirs 
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650 4 |a Xanthomonas campestris pv. barbareae 
650 4 |a cabbage 
650 4 |a crucifers 
650 4 |a garlic mustard 
650 4 |a invasive weeds 
650 4 |a pathogen emergence 
700 1 |a Harney-Davila, Gabriela  |e verfasserin  |4 aut 
700 1 |a Cipollini, Don  |e verfasserin  |4 aut 
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