Invasive Species Compendium

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Abstract

Virus and phytoplasma infections on 'officinal' plants in Emilia-Romagna. III report.

Abstract

The results of a field study of virus and phytoplasma infections occurring at the Officinal Garden of Casola Valsenio (Ravenna, Emilia-Romagna region, Italy) during 1997-1998 are reported. Arabis mosaic nepovirus (ArMV) was detected for the first time on Asclepias syriaca. The following other viruses were also found: cucumber mosaic cucumovirus (CMV) on Borago officinalis and Valeriana phu; alfalfa mosaic alfamovirus (AMV) on Salvia sclarea and Teucrium scorodonia; broad bean wilt fabavirus, serotype I, on Leonorus cardiaca [Leonurus cardiaca]. By applying PCR/RFLP analyses, Digitalis lutea resulted in a new natural host of phytoplasmas belonging to the aster yellows group (16SrI-B), CMV, AMV and BBWV were probably transmitted by aphids from infected weeds or other medicinal plants cultivated in the same area.