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Bean yellow mosaic virus isolated from Winged Bean (Psophocarpus tetragonolobus) in Italy

P. Montalbini, G. Bellezza and M. Marte
Phytopathologia Mediterranea
Vol. 27, No. 2 (Agosto 1988), pp. 57-61
Stable URL: http://www.jstor.org/stable/42684898
Page Count: 5
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Abstract

A virus identified as Bean yellow mosaic virus (BYMV) was isolated from winged Bean (Psophocarpus tetragonolobus) plants showing green mosaic, leaf distortion, yellow mosaic, periveinal necrosis and stunting. Purification, determination of the host range and serological assays (immunodiffusion tests and immune electron microscopy) showed that the BYMV isolated from winged bean is closely related to a bean isolate of the same virus. Minor difference between the two isolates were detected especially in the response induced on some host plants. Un isolato di virus del mosaico giallo del Fagiolo (NYMV) è stato ottenuto da piante di Fagiolo alato (Psophocarpus tetragonolobus) che presenta vano sintomi di mosaico verde, deformazioni fogliari, mosaico giallo, necrosi perinervali e riduzione di sviluppo. Mediante purificazione, inoculazione su specie indicatrici e saggi sierologici (immunodiffusione e immunomicroscopia elettronica), si è accertato che l'isolato di BYMV da Fagiolo alato è strettamente affine ad un isolato dello stesso virus ottenuto da fagiolo. Le limitate differenze tra i due isolati riguardavano soprattutto la risposta di alcune specie ospiti.

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