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Article

Polyphasic Analysis of Isolates from Kiwifruit Reveal New Genetic Lineages of Pseudomonas syringae pv. actinidifoliorum Look-Alike

1
Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113 Valencia, Spain
2
Laboratorio de Sanidad Vegetal, Principado de Asturias, 433011 Asturias, Spain
3
Laboratorio de Diagnóstico Fitopatológico, Servicio de Seguridad y Control de la Producción Agraria, Generalitat Valenciana, 46460 Valencia, Spain
4
Estación Fitopatolóxica do Areeiro, Deputación de Pontevedra, 36153 Pontevedra, Spain
5
Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), 33300 Asturias, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Renaud Travadon
Agronomy 2021, 11(12), 2464; https://doi.org/10.3390/agronomy11122464
Received: 28 October 2021 / Revised: 20 November 2021 / Accepted: 2 December 2021 / Published: 3 December 2021
(This article belongs to the Special Issue Epidemiology and Management of Fruit and Foliar Diseases)
Currently, kiwifruit cultivation arouses great economic interest in the agricultural sector in several countries of the European Union due to high consumer demand and good results achieved in terms of production potential and fruit quality. One of the main bacterial species that cause yield losses in kiwifruit plants is Pseudomonas syringae. Diseases such as bacterial canker, caused by pathovar (pv.) actinidiae; floral bud necrosis caused by pv. syringae and leaf spots caused by pv. actinidifoliorum (Pfm) are clear examples. Between 2014 and 2017, in the main kiwifruit producing areas in the north and east of Spain, several surveys were carried out in search of these pathogens. Analyses realized from symptomatic and asymptomatic plants of Actinidiadeliciosa revealed the existence of new bacterial isolates close to Pfm. These new isolates werelow virulence pathogens similar to Pfm but belonging to a new group of P. syringae that affected the leaves of A. chinensis var. deliciosa. This study focused on the characterization and classification of these new isolates by a polyphasic approach in order to provide more information for understanding how the different populations of P.syringae affecting kiwifruit. They had the phenotypic characteristics of Pfm but by molecular approaches, they constituted a supported genetic lineage closely-related to Pfm independent of the five lineages described so far. This work revealed the great diversity found in P. syringae species affecting kiwifruit plants and supports the hypothesis that Pfm is a low virulence pathogen which is long established in Europe. View Full-Text
Keywords: pathovars; MLSA; virulence; classification; linage pathovars; MLSA; virulence; classification; linage
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MDPI and ACS Style

Morán, F.; Marco-Noales, E.; Landeras, E.; Roselló, M.; Abelleira, A.; Gonzalez, A.J.; López, M.M. Polyphasic Analysis of Isolates from Kiwifruit Reveal New Genetic Lineages of Pseudomonas syringae pv. actinidifoliorum Look-Alike. Agronomy 2021, 11, 2464. https://doi.org/10.3390/agronomy11122464

AMA Style

Morán F, Marco-Noales E, Landeras E, Roselló M, Abelleira A, Gonzalez AJ, López MM. Polyphasic Analysis of Isolates from Kiwifruit Reveal New Genetic Lineages of Pseudomonas syringae pv. actinidifoliorum Look-Alike. Agronomy. 2021; 11(12):2464. https://doi.org/10.3390/agronomy11122464

Chicago/Turabian Style

Morán, Félix, Ester Marco-Noales, Elena Landeras, Montserrat Roselló, Adela Abelleira, Ana J. Gonzalez, and María M. López. 2021. "Polyphasic Analysis of Isolates from Kiwifruit Reveal New Genetic Lineages of Pseudomonas syringae pv. actinidifoliorum Look-Alike" Agronomy 11, no. 12: 2464. https://doi.org/10.3390/agronomy11122464

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