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Relationships Among Australian and North American Isolates of the Bean Yellow Mosaic Potyvirus Subgroup. O. W. Barnett, Department of Plant Pathology and Physiology, Clemson University, Clemson, South Carolina 29634-0377; J. W. Randles(2), and P. M. Burrows(3). (2)Department of Plant Pathology, Waite Agricultural Research Institute, Glen Osmond, SA 5064, Australia; (3)Experimental Statistics Unit, Clemson University, Clemson, South Carolina 29634-0367. Phytopathology 77:791-799. Accepted for publication 9 October 1986. Copyright 1987 The American Phytopathological Society. DOI: 10.1094/Phyto-77-791.

Relationships among 17 isolates from the bean yellow mosaic potyvirus subgroup were investigated by molecular hybridization, using randomly primed complementary DNA to each of the isolate-RNA’s, and by direct enzyme-linked immunosorbent assay, using antisera to five of the isolates. The same general pattern of relationships among isolates was found by both methods. Six clover yellow vein virus (CYVV) isolates from Australia appeared to be related to a North American isolate, CYVV-Pratt, though they were more closely related to each other. Relationships among seven bean yellow mosaic virus (BYMV) isolates from Australia were more diverse, with some isolates appearing closely related to a North American isolate, BYMV-Scott. None of the Australian isolates, including pea mosaic virus I, were closely related to the North American pea mosaic virus (BYMV)-204-1. The Australian sweet pea mosaic virus was not closely related to BYMV, CYVV, or pea mosaic virus.