ISHS Acta Horticulturae 164: VI International Symposium on Virus Diseases of Ornamental Plants
A NEW DISEASE CAUSING STUNTING AND SHOOT PROLIFERATION IN CARNATION |
| Authors: | V. Lisa, G. D'Agostino, G. Boccardo |
| Abstract:
A disease with symptoms of stunting, shoot proliferation, poor flower set and flower distortion afflicts carnations in Tuscany, Central Italy. Viruses, mycoplasma-like organisms (MLO) and viroids were considered as possible agents. Viruses were excluded because plants with specific symptoms were either virus-free or infected with common carnation viruses present also in plants lacking these symptoms. MLO were observed in affected plants, but in very low concentrations; they could not be graft-transmitted to carnation and other plants, and tetracycline treatment did not ameliorate the symptoms. Using PAGE under denaturing conditions, a viroid-like RNA, not present in healthy plants, was detected in carnations with symptoms and in previously healthy carnations grafted with diseased scions. | |
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