Isolates of bean common mosaic virus comprising two distinct potyviruses

Reference Report for IND92062689

Title:	Isolates of bean common mosaic virus comprising two distinct potyviruses
Authors:	McKern, N.M., Mink, G.I., Barnett, O.W., Mishra, A., Whittaker, L.A., Silbernagel, M.J., Ward, C.W., Shukla, D.D.
Source:	Phytopath. 1992, 82(9):923-929
Abstract:	Strains of bean common mosaic potyvirus (BCMV) have been identified largely by their characteristic interactions with a selected number of differential bean (Phaseolus vulgaris) cultivars. Recent studies have suggested that BCMV strains could be classified on serological and other grounds as strains of 2 distinct potyviruses. Using high-performance liquid chromatographic peptide profiles of coat protein digests together with limited peptide analysis, 22 isolates of BCMV, including representatives from 7 recognized pathotypes, were compared with each other and with the type strains of blackeye cowpea mosaic potyvirus (BlCMV) and peanut stripe potyvirus (PStV). The peptide profiles confirm the existence of 2 distinct potyviruses among the current isolates of BCMV. BCMV strains NL-3, NL-5, NL-8 and TN-1 are strains of 1 of the potyviruses, for which the name ""bean necrosis mosaic virus"" is proposed, since these strains induce temp.-insensitive necrosis in bean cultivars that carry the dominant I gene. Strains CH-2, NL-1, NL-2, NL-4, NL-6, NL-7, PR-1, RU-1, US-1, US-2 (3 variant isolates), US-3, US-4, US-5, US-6, US-7 and US-10 are strains of the second potyvirus, for which retention of the name BCMV is suggested. Peptide profile data also suggest that isolates of BlCMV, PStV, azuki bean mosaic potyvirus (AzMV), and 3 potyvirus isolates from soyabean (PM, PN and 74) are all strains of the second potyvirus, BCMV.

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