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Erwinia pyrifoliae, a new pathogen on strawberry in the Netherlands1

Article type: Research Article

Authors: Wenneker, Marcela; * | Bergsma-Vlami, Mariab

Affiliations: [a] Applied Plant Research, Wageningen University & Research Centre, Randwijk, The Netherlands | [b] National Plant Protection Organisation (NPPO), Wageningen, The Netherlands

Correspondence: [*] Corresponding author: Marcel Wenneker, Applied Plant Research, Research Unit Fruit, Wageningen University & Research Centre, Randwijk, The Netherlands. Tel.: +31 488473745; Fax: +31 488473717; E-mail: marcel.wenneker@wur.nl.

Note: [1] Paper presented at IOBC Workshop on Integrated Soft Fruit Production, Pergine Valsugana (Italy), May 25-26, 2014.

Keywords: Erwinia, strawberry, bacterial disease, fire blight

DOI: 10.3233/JBR-140086

Journal: Journal of Berry Research, vol. 5, no. 1, pp. 17-22, 2015

Received 1 November 2014
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Accepted 25 December 2014
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Published: 13 March 2015
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Abstract

BACKGROUND:

During the late spring of 2013 strawberry plants grown under protection (Fragaria x ananassa cv. Elsanta) were found at several locations in the Netherlands showing an intense brown to black discoloration of their immature fruits, their fruit calyx and the attached stems.

OBJECTIVE:

Identification of a new bacterial disease on strawberry.

METHOD:

Identification and characterization was based on the requirements of EPPO (European and Mediterranean Plant Protection Organization), followed by a pathogenicity test on strawberry plants for verification of the virulence.

RESULTS:

The isolates exhibited biochemical profiles closely related to Erwinia pyrifoliae reference strain LMG 25888. The isolates were further identified as E. pyrifoliae based on the real time PCR assay. Pathogenicity of several isolates was tested and confirmed on potted strawberry plants (cvs. Elsanta and Selva).

CONCLUSION:

Erwinia pyrifoliae is a pathogen on strawberry. Thus far occurrence of this pathogen on strawberry has not been reported nor its presence outside Asia.

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