Vol. 54 No. 1 (2015)
Research Papers

Identification of 16SrIX-C phytoplasmas in Argyranthemum frutescens in Italy

Luca FERRETTI
Agricultural Research Council - Plant Pathology Research Centre (CRA-PAV), Rome (Italy)
Elisa COSTANTINI
Agricultural Research Council - Plant Pathology Research Centre (CRA-PAV), Rome (Italy)
Graziella PASQUINI
Agricultural Research Council - Plant Pathology Research Centre (CRA-PAV), Rome (Italy)

Published 2014-09-19

Keywords

  • Picris echioides yellows,
  • ornamentals,
  • RFLP analysis,
  • marguerite daisy

How to Cite

[1]
L. FERRETTI, E. COSTANTINI, and G. PASQUINI, “Identification of 16SrIX-C phytoplasmas in Argyranthemum frutescens in Italy”, Phytopathol. Mediterr., vol. 54, no. 1, pp. 21–27, Sep. 2014.

Abstract

Phytoplasmas are cell wall-less microorganisms associated with plant diseases worldwide. Many important food, vegetable and fruits crops as well as ornamental plants can be severely affected by these pathogens, with significant economic impacts. Phytoplasma diseases of ornamentals have been described worldwide in a wide range of plant genera, and 11 different 16Sr groups have been identified. In Italy, many ornamental plant species belonging to several botanical families have been found to be infected by phytoplasmas, classified into the ribosomal groups 16SrI, 16SrII, 16SrV and 16SrXII. During a survey carried out in commercial gardens in Rome, some marguerite daisy (Argyranthemum frutescens) plants showing symptoms of phytoplasma-like disease, were collected and submitted to molecular analyses. Cloning and sequencing of the portion of the 16S rRNA gene followed by BLAST analysis, real and virtual restriction fragment length polymorphism anlaysis with AluI and RsaI, allowed assignment of the detected phytoplasma to the 16SrIX-C group (Picris echioides yellows, PEY).

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