ISHS Acta Horticulturae 110: V International Symposium on Virus diseases of Ornamental Plants
SOME PROPERTIES OF A POTYVIRUS OCCURRING IN TRADESCANTIA AND ZEBRINA SPP. |
| Authors: | B.E.L. Lockhart, J. Betzold |
| Abstract:
Ornamental Tradescantia and Zebrina spp. showing abnormal growth in commercial greenhouses in Minnesota were found to be infected with a filamentous virus. Symptoms of infection included mosaic, leaf deformation and stunting. This virus was transmissible mechanically only to three genera of the Commelinaceae: Tradescantia, Zebrina and Rheoe, and was trasmitted in a nonpersistent manner by Myzus persicae and Rhopalosiphum padi. In crude extracts of infected Tradescantia leaf tissue, the virus had a thermal inactivation point of 54–58 °C, a longevity in vitro of 1–2 days at 22–24 °C, dilution end point of 10-3 10-4, and an average particle length of 754 nm. Pinwheel and tubular inclusions were observed in ultrathin sections of infected leaf tissue. The virus did not react in agar gel immunodiffusion tests with antisera to any of eleven other potyviruses. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
