Some Hosts and Properties of a Potyvirus Infecting Vanilla fragrans (Orchidaceae) in the Kingdom of Tonga |
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| Authors: | M N Pearson A A Brunt S P Pone |
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| Institution: | Department of Botany, University of Auckland, New Zealand Institute of Horticultural Research, Littlehampton, England |
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| Abstract: | Abstract A potyvirus was isolated from Vanilla fragrans exhibiting leaf distortion, chlorotic and necrotic lesions and vine die-back. The virus can be propagated in Nicotiana clevelandii and N. benthamiana and induces local lesions in Chenopodium amaranticolor and C. quinoa. The flexuous particles have a mean length of 765 nm, pinwheel inclusions are found in systemically infected N. benthamiana leaves and SDS-polyacrylamide gel electrophoresis indicates a single polypeptide of M 32.7 × 103. The virus is transmissible from N. clevelandii to N. clevelandii by the aphid species Myzus persicae and Aphis gossypii. A polyclonal antiserum raised to the Tongan potyvirus failed to react, with the potyvirus associated with mosaic symptoms of V. tahitensis in French Polynesia and ISEM failed to detect any close relationship to 22 other potyviruses. |
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