Evolution and Molecular Biology of Luteoviruses

Martín, Robert R.; Keese, Paul; Young, Mark; Waterhouse, P. M.; Gerlach, W. L.

doi:10.1146/annurev.py.28.090190.002013

Cited by 106 publications

(68 citation statements)

References 32 publications

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“…As no recombinants were detected between the two sobemoviruses, it is not clear whether the reason is the extent and/or the content of identical blocks or not. It was surprising that no recombination events in the putative subgenomic promoter area were identified, as the evolution of Pro-VPg-RdRp/CP region in the "supergroup" of luteo-sobemo-tombusviruses is modular (aus dem Siepen et al, 2005;Gibbs and Cooper, 1995;Martin et al, 1990;Mayo and Jolly, 1991;Mayo and Ziegler-Graff, 1996;Miller and Rasochova, 1997;Moonan and Mirkov, 2002;Moonan et al, 2000). Thus, although the evolutionary analysis supports the idea of frequent recombinations within this supergroup, this study was unable to confirm that RNA recombinations take place during the replication of sobemoviruses.…”

Section: Discussionmentioning

confidence: 65%

“…At the same time, the products of ORF1 and ORF2 of viruses from genus Luteovirus are most similar to those of the viruses of the genus Dianthovirus from the family Tombusviridae (D' Arcy and Domier, 2005). Taking into account all of these homologies, it has been suggested that the key mechanism in the evolution of "the supergroup" composed of luteo-, sobemo-and tombusviruses is RNA recombination (Martin et al, 1990). A recent report of the sequence of Poinsettia cryptic virus described a virus showing a close relationship to poleroviruses within the first three quarters of its genome, but rather to sobemoviruses in the last quarter.…”

Section: Introductionmentioning

confidence: 99%

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An attempt to identify recombinants between two sobemoviruses in doubly infected oat plants

Meier

Truve

2006

Environ. Biosafety Res.

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Recombination in RNA viruses is considered to play a major role as a driving force in virus variability to counterbalance loss in fitness that can be due to the accumulation of detrimental mutations. Studies on mixed infections are pertinent for understanding the role of recombination in virus evolution. They also provide important baseline information for studying the biosafety of plants expressing viral sequences. To investigate the possibility of RNA recombination occurrence between two sobemoviruses under little or no selection pressure, we co-infected test plants with Cocksfoot mottle virus (CfMV) and Ryegrass mottle virus (RGMoV). CfMV and RGMoV were selected because of their overlapping host range and geographical distribution. First, symptom development of both viruses in barley (Hordeum vulgare) and oat (Avena sativa) was examined. Both viruses generated quite strong infection symptoms in oat, but synergism was not detected. RGMoV was lethal for barley, whereas CfMV infection in barley was nearly symptomless. RT-PCR analysis revealed 100% infection with both viruses in oat but not in barley. Therefore, an RNA recombination study of CfMV and RGMoV was performed in oat. 105 plants were co-inoculated with both viruses and putative recombinational hot spot regions were screened for recombination events by RT-PCR analysis at a sensitivity level down to 0.1-100 pg of viral genomic RNA. No recombination events between the two sobemoviruses were detected.

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Section: Discussionmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

An attempt to identify recombinants between two sobemoviruses in doubly infected oat plants

Meier

Truve

2006

Environ. Biosafety Res.

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“…During the processing of this manuscript, a tentative phylogenetic tree generated by a cluster algorithm was published, and included a subset of the viral CPs considered here (Martin et al, 1990). The tree topology was similar to that derived in this paper, with the exception that the grouping of MCMV with SBMV was not observed by these workers.…”

Section: Phylogeny Of Capsid Proteinsmentioning

confidence: 99%

Phylogeny of capsid proteins of small icosahedral RNA plant viruses

Dolja

Koonin

1991

Journal of General Virology

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Statistically significant alignment was generated between the amino acid sequences of the (putative) shell (S) domains of the capsid proteins of small RNA plant viruses with icosahedral capsids in the tombusvirus, carmovirus, dianthovirus, sobemovirus and luteovirus groups. Inspection of the alignment showed good correspondence between the experimentally defined fl-strands and ~-helices of the capsid proteins of tomato bushy stunt, southern bean mosaic and turnip crinkle viruses, allowing prediction of the secondary structure elements in proteins with unresolved tertiary structure. It is concluded that this set of viral capsid proteins forms a tight evolutionary cluster. Comparison of the alignment of the proteins of this family with the sequences of other capsid proteins of icosahedral RNA viruses revealed more distant similarities to the satellites of tobacco necrosis, panicum mosaic, tobacco mosaic and maize white line mosaic viruses, as well as to nepo-and comoviruses. The tentative phylogenetic tree derived from the capsid protein alignment separated into three main lineages: (l) carmo-, tombus-and dianthoviruses, (II) southern bean mosaic, tobacco necrosis and maize chlorotic mottle viruses, and (III) luteoviruses. Comparison of this tree topology with the tentative evolutionary schemes for the respective virus RNA-dependent RNA polymerases suggested that gene shuffling is the universal trend in the evolution of small RNA plant virus genomes.

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“…Pathogen system Burnett (1989), Martin et al (1990), Gray et al (1993) and Agrios (1997) Griffith (1987), Giblin-Davis (1990) and Agrios (1997) a See Labandeira et al (2007).…”

Section: Introductionmentioning

confidence: 99%