Legume Luteovirus Taxonomy and Current Research.

Ashby, J. W.; Johnstone, G. R.

doi:10.1071/app9850002

Cited by 11 publications

(6 citation statements)

References 32 publications

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“…Furthermore, the epidemiologies of the members of each of these groups are similar; SCRLV perennates mostly in white clover in Australasia and spreads with A. solani to annual legumes, BLRV perennates in lucerne and spreads to annual legumes with A. pisum and the BWYV types spread in the field mostly with M. persicae and occur commonly in brassica, composite and legume crops and weeds. These three groupings appear to be natural and the various isolates should probably be considered as strains of these groups (Ashby and Johnstone, 1984).…”

Section: Discussionmentioning

confidence: 99%

The host ranges, classification and identification of eight persistent aphid-transmitted viruses causing diseases in legumes

Johnstone¹,

Ashby²,

Gibbs

et al. 1984

Netherlands Journal of Plant Pathology

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Seventy one seed-lines representing 23 species of papilionoid legumes and 17 species of nonlegumes were collected and distributed to four countries; Australia, New Zealand, the Netherlands and the U.S.A. In each of these countries plants were grown from the seeds and their suscept~ility to a total of eight persistent aphid isolates transmitted viruses was assessed. The viruses were a strain of beet western yellows (BWYV) from Glycine maxin Illinois, legume yellows (LYV) in California and a virus in Michigan (MiAV) from Medicago sativa, from Pisum sativum causing leaf roll and top yellows in New Zealand (PeLRV-NZ) and the Netherlands (BLRV), isolates of subterranean clover red leaf from New Zealand (SCRLV-NZ) and Tasmania (SCRLV-T); and Subterranean clover stunt (SCSV) from Tasmania.The relationships between the eight viruses as indicated by their host reactions were assessed using computer classification techniques. SCRLV-NZ and SCRLV-T were the most similar. They had moderately wide host ranges that included some non-legumes. A second group comprized BWYV and PeLRV-NZ. These were typical of most beet western yellows virus strains in that they infected Brassica napus, Capsella bursa-pastoris and Stellaria media. MiAV and BLRV also formed a pair. They generally induced severe symptoms on the hosts which they infected and had host ranges confined to legumes except that BLRV also infected Claytonia perfoliata and Erodium spp. The relationships of LYV and SCSV were not consistent. They paired together in some classifications, but SCSV sometimes grouped with the SCRLV isolates. Both had host ranges confined to legumes, caused severe symptoms in most hosts and were often difficult to recover from affected plants. LYV had some affinities with BLRV and MiAV.The tests indicated a set of test plants which were most useful for propagating and identifying persistent aphid-transmitted viruses from legumes. Two, P. sativum cv. Onyx and Trifolium subterraneum cv. Bacchus Marsh were susceptible to all isolates. Ten others distinguished between t]he isolates and were Arachis hypogea, Beta vulgaris, C. bursa-pastoris, G. max cv.

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Section: Discussionmentioning

confidence: 99%

The host ranges, classification and identification of eight persistent aphid-transmitted viruses causing diseases in legumes

Johnstone¹,

Ashby²,

Gibbs

et al. 1984

Netherlands Journal of Plant Pathology

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“…The symptoms of SCS also have similarities to those of milk vetch dwarf virus (MVDV) (Ashby & Johnstone, 1985). In addition MVDV and SCS are both transmitted by the cowpea aphid.…”

Section: Johnstone Unpublished Results)mentioning

confidence: 96%

“…Ashby & Kyriakou (1982) reported that SCRLV and SDV appeared identical when they were compared in serological agar gel double diffusion tests. Their host ranges and vector specificities are also similar (Tamada, 1970;Johnstone et al, 1984a;Ashby & Johnstone, 1985). It therefore appears that SCRLV and SDV should not be considered as separate viruses (Ashby & Johnstone, 1985), and there is no intention to include SCRLV separately in the CMI/AAB Plant Virus Descriptions (B. D. Harrison and A. F. Murant, personal communication).…”

Section: Johnstone Unpublished Results)mentioning

confidence: 96%

“…Their host ranges and vector specificities are also similar (Tamada, 1970;Johnstone et al, 1984a;Ashby & Johnstone, 1985). It therefore appears that SCRLV and SDV should not be considered as separate viruses (Ashby & Johnstone, 1985), and there is no intention to include SCRLV separately in the CMI/AAB Plant Virus Descriptions (B. D. Harrison and A. F. Murant, personal communication). This review therefore covers past references to SCRLV and SDV under the SDV acronym.…”

Section: Johnstone Unpublished Results)mentioning

confidence: 96%

“…Green peach aphids on brassicas infected with BWYV seem relatively unimportant in infection of legumes. It therefore appears that BWYV has different prime vectors in the field depending upon the crop (Ashby & Johnstone, 1985).…”

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Virus diseases of subterranean clover

Johnstone

McLean

1987

Annals of Applied Biology

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Subterranean clover (Trifolium subterraneum) is grown as a pasture legume in several temperate regions of the world where the soils are acidic and infertile, and the rainfall is winter dominant and less than 600 mm annually. It is particularly important in southern Australia where more than 16 million ha have been sown with this species as the pasture legume component.Nine viruses have been recorded infecting subterranean clover in the field. These are alfalfa mosaic, bean yellow mosaic (pea mosaic), beet western yellows, clover yellow vein, cucumber mosaic, pea enation mosaic, soybean dwarf (subterranean clover red leaf), subterranean clover mottle and white clover mosaic. In addition there is an important problem referred to as subterranean clover stunt that was assumed to be caused by a virus but whose aetiology is still unknown. The importance of these diseases is reviewed and details on their epidemiologies are outlined together with details on progress towards their control and some comments on matters worthy of attention in the future. Reference is also made to several exotic viruses known to infect subterranean clover experimentally that could possible cause problems if introduced into Australia.

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Luteoviruses

Casper¹

1988

The Plant Viruses

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Legume Luteovirus Taxonomy and Current Research.

Cited by 11 publications

References 32 publications

The host ranges, classification and identification of eight persistent aphid-transmitted viruses causing diseases in legumes

The host ranges, classification and identification of eight persistent aphid-transmitted viruses causing diseases in legumes

Virus diseases of subterranean clover

Luteoviruses

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