ISSN:
1365-3059
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
A new virus, subterranean clover mottle virus (SCMoV) was found at several locations in Western Australia in Trifolium subterraneum L. (subterranean clover) with severe disease symptoms. Paiticles of the virus were shown to share many physical properties with members of the sobemo-virus group. However, in addition to the single-stranded RNA of MJ about 1.5 × 106 which is characteristic of sobemoviruses, SCMoV particles also contained circular and linear viroid-like RNAs of two size classes, one about 400 and the other about 300 nucleotides long. At present it is not clear if the two types of viroid-like RNAs are components of the same SCMoV strain or of closely related strains of the virus which are able to confect subterranean clover.SCMoV was shown to be serologically related to lucerne transient streak virus (LTSV). However, the relationship was remote and whereas most high-titred antisera to LTSV reacted with SCMoV particles, antisera to SCMoV failed to recogaize those of LTSV. Neither SCMoV nor LTSV are serologically related to velvet tobacco mottle virus (VTMoV) or Solanum nodiflorum mottle virus (SNMV). However, particles of all four viruses have many physical and chemical properties in common, including RNA complements consisting of both virus-like and viroid-like RNAs. Because of their affinities and unique RNA complements, we suggest that SCMoV, LTSV, VTMoV and SNMV may warrant inclusion in a new taxonomic group.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-3059.1983.tb01300.x
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