Vol. 60 No. 2 (2021)
Articles

First report of Erwinia amylovora in Tuscany, Italy

Duccio MIGLIORINI
Institute for Sustainable Plant Protection - National Research Council (IPSP-CNR), Via Madonna del Piano 10, I-50019, Sesto Fiorentino, Firenze
Francesco PECORI
Institute for Sustainable Plant Protection - National Research Council (IPSP-CNR), Via Madonna del Piano 10, I-50019, Sesto Fiorentino, Firenze
Aida RAIO
Institute for Sustainable Plant Protection - National Research Council (IPSP-CNR), Via Madonna del Piano 10, I-50019, Sesto Fiorentino, Firenze
Nicola LUCHI
Institute for Sustainable Plant Protection - National Research Council (IPSP-CNR), Via Madonna del Piano 10, I-50019, Sesto Fiorentino, Firenze
Domenico RIZZO
Laboratory of Phytopathological Diagnostics and Molecular Biology, Plant Protection Service of Tuscany, 51100 Pistoia
Carlo CAMPANI
Laboratory of Phytopathological Diagnostics and Molecular Biology, Plant Protection Service of Tuscany, 51100 Pistoia
Lorenzo NERI
Laboratory of Phytopathological Diagnostics and Molecular Biology, Plant Protection Service of Tuscany, 51100 Pistoia
Alberto SANTINI
Institute for Sustainable Plant Protection - National Research Council (IPSP-CNR), Via Madonna del Piano 10, I-50019, Sesto Fiorentino, Firenze
Published September 13, 2021
Keywords
  • Fire blight,
  • AJ75/AJ76 and AMSbL/AMSbR primers,
  • recA gene
How to Cite
[1]
D. MIGLIORINI, “First report of Erwinia amylovora in Tuscany, Italy”, Phytopathol. Mediterr., vol. 60, no. 2, pp. 253-257, Sep. 2021.

Funding data

Abstract

2-years-old plants of Pyrus communis showing symptoms of fire blight disease were sampled in an orchard in Tuscany (Italy) during Autumn 2020. Plants were obtained the previous spring from a commercial nursery located in a region where the disease is present since 1994. The collected material was processed in the lab in order to verify the presence of the bacterium Erwinia amylovora, the causal agent of fire blight. Pure isolates showing white mucoid colonies and levan producers on Levan medium were putatively assimilated to E. amylovora. DNA was extracted from the cultures and analysed with three molecular assays, including duplex PCR of the 29-Kb plasmid pEA29 and the ams chromosomal region, sequencing of the 16S rDNA and recA gene regions, two real-time PCR assays on symptomatic plant tissues. All tests confirmed the presence of E. amylovora. Symptomatic and surrounding plants were removed and immediately destroyed according to the regional phytosanitary protocol. This outcome poses a serious threat for fruit orchards in the area.

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