NDLI: Pathotyping Citrus Ornamental Relatives with Xanthomonas citri pv. citri and X. citri pv. aurantifolii Refines Our Understanding of Their Susceptibility to These Pathogens

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Pathotyping Citrus Ornamental Relatives with Xanthomonas citri pv. citri and X. citri pv. aurantifolii Refines Our Understanding of Their Susceptibility to These Pathogens

Content Provider	MDPI
Author	Licciardello, Grazia Caruso, Paola Bella, Patrizia Boyer, Claudine Smith, Malcolm W. Pruvost, Olivier Robene, Isabelle Cubero, Jaime Catara, Vittoria
Copyright Year	2022
Description	Xanthomonas citri pv. citri (Xcc) and X. citri pv. aurantifolii (Xca) are causal agents of Citrus Bacterial Canker (CBC), a devastating disease that severely affects citrus plants. They are harmful organisms not reported in Europe or the Mediterranean Basin. Host plants are in the Rutaceae family, including the genera Citrus, Poncirus, and Fortunella, and their hybrids. In addition, other genera of ornamental interest are reported as susceptible, but results are not uniform and sometimes incongruent. We evaluated the susceptibility of 32 ornamental accessions of the Rutaceae family belonging to the genera Citrus, Fortunella, Atalantia, Clausena, Eremocitrus, Glycosmis, Microcitrus, Murraya, Casimiroa, Calodendrum, and Aegle, and three hybrids to seven strains of Xcc and Xca. Pathotyping evaluation was assessed by scoring the symptomatic reactions on detached leaves. High variability in symptoms and bacterial population was shown among the different strains in the different hosts, indicative of complex host–pathogen interactions. The results are mostly consistent with past findings, with the few discrepancies probably due to our more complete experimental approach using multiple strains of the pathogen and multiple hosts. Our work supports the need to regulate non-citrus Rutaceae plant introductions into areas, like the EU and Mediterranean, that are currently free of this economically important pathogen.
Starting Page	986
e-ISSN	20762607
DOI	10.3390/microorganisms10050986
Journal	Microorganisms
Issue Number	5
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2022-05-08
Access Restriction	Open
Subject Keyword	Microorganisms Horticulture Citrus Bacterial Canker Rutaceae Ornamental Plants Hyperplastic Tissue Pathotype Host–plant Interaction
Content Type	Text
Resource Type	Article

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