Non-cultivated plants of the Tallgrass Prairie Preserve of northeastern Oklahoma frequently contain virus-like sequences in particulate fractions

Muthukumar, Vijay; Melcher, Ulrich; Pierce, Marlee L.; Wiley, Graham B.; Roe, Bruce A.; Palmer, Michael W.; Thapa, Vaskar; Ali, Akhtar; Ding, Tao

doi:10.1016/j.virusres.2008.06.016

Cited by 73 publications

(50 citation statements)

References 14 publications

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“…In contrast with other genera of plant-infecting viruses, it seems to be a trait of the genus Tymovirus that a high fraction (about one-third) of the currently known species were isolated from wild plants. This suggests that tymoviruses are prevailing in wild plant ecosystems, as substantiated by a recent report on viruses infecting wild plants in the Tallgrass Prairie Preserve in Oklahoma [54]. The role of tymovirus infection in ecosystem webs could be complex, as indicated by one of the few reports of a benefit for a host plant derived from virus infection: the bright symptoms induced by KYMV in the wild legume Kennedya rubicunda was associated with a decreased herbivory [55].…”

Section: Discussionmentioning

confidence: 97%

Genomic and biological characterization of chiltepín yellow mosaic virus, a new tymovirus infecting Capsicum annuum var. aviculare in Mexico

et al. 2010

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The characterization of viruses infecting wild plants is a key step towards understanding the ecology of plant viruses. In this work, the complete genomic nucleotide sequence of a new tymovirus species infecting chiltepin, the wild ancestor of Capsicum annuum pepper crops, in México was determined, and its host range has been explored. The genome of 6,517 nucleotides has the three open reading frames described for tymoviruses, putatively encoding an RNA-dependent RNA polymerase, a movement protein and a coat protein. The 5' and 3' untranslated regions have structures with typical signatures of the tymoviruses. Phylogenetic analyses revealed that this new virus is closely related to the other tymoviruses isolated from solanaceous plants. Its host range is mainly limited to solanaceous species, which notably include cultivated Capsicum species. In the latter, infection resulted in a severe reduction of growth, indicating the potential of this virus to be a significant crop pathogen. The ñame of chiltepin yellow mosaic virus (ChiYMV) is proposed for this new tymovirus.

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Section: Discussionmentioning

confidence: 97%

Genomic and biological characterization of chiltepín yellow mosaic virus, a new tymovirus infecting Capsicum annuum var. aviculare in Mexico

et al. 2010

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“…This article is a part of the Plant Virus Biodiversity and Ecology project, which documented many novel plant viruses from the TGPP (Melcher et al. 2008; Muthukumar et al. 2009; Shah 2010; Thapa et al.…”

Section: Discussionmentioning

confidence: 99%

Determinants of taxonomic composition of plant viruses at the Nature Conservancy’s Tallgrass Prairie Preserve, Oklahoma

et al. 2015

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The role of biotic and abiotic factors in shaping the diversity and composition of communities of plant viruses remain understudied, particularly in natural settings. In this study, we test the effects of host identity, location, and sampling year on the taxonomic composition of plant viruses in six native plant species [Ambrosia psilostachya (Asteraceae), Vernonia baldwinii (Asteraceae), Asclepias viridis (Asclepiadaceae), Ruellia humilis (Acanthaceae), Panicum virgatum (Poaceae) and Sorghastrum nutans (Poaceae)] from the Nature Conservancy’s Tallgrass Prairie Preserve in northeastern Oklahoma. We sampled over 400 specimens of the target host plants from twenty sites (plots) in the Tallgrass Prairie Preserve over 4 years and tested them for the presence of plant viruses applying virus-like particle and double-stranded RNA enrichment methods. Many of the viral sequences identified could not be readily assigned to species, either due to their novelty or the shortness of the sequence. We thus grouped our putative viruses into operational viral taxonomic units for further analysis. Partial canonical correspondence analysis revealed that the taxonomic composition of plant viruses in the target species had a significant relationship with host species (P value: 0.001) but no clear relation with sampling site or year. Variation partitioning further showed that host identity explained about 2–5 per cent of the variation in plant virus composition. We could not interpret the significant relationship between virus composition and host plants with respect to host taxonomy or ecology. Only six operational viral taxonomic units had over 5 per cent incidence over a 4-year period, while the remainder exhibited sporadic infection of the target hosts. This study is the first of its kind to document the dynamics of the entire range of viruses in multiple plant species in a natural setting.

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“…If past quarantine practices are continued, this rate of quarantine evasion is likely to continue as there is a large pool of potyviruses found elsewhere in the world that are not yet recorded in Australia. Similar studies of the viruses of the tallgrass prairie reserve of north-eastern Oklahoma (Muthukumar et al, 2009) and viruses of Costa Rica (Wren et al, 2006) are being undertaken.…”

Section: Why Bother With Rates and Dates?mentioning

confidence: 98%

Time - the emerging dimension of plant virus studies

Gibbs¹,

Fargette

García‐Arenal

et al. 2009

Journal of General Virology

103

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Recent research has revealed that some plant viruses, like many animal viruses, have measurably evolving populations. Most of these viruses have single-stranded positive-sense RNA genomes, but a few have single-stranded DNA genomes. The studies show that extant populations of these viral species are only decades to centuries old. The genera in which they are placed have diverged since agriculture was invented and spread around the world during the Holocene period. We suggest that this is not mere coincidence but evidence that the conditions generated by agriculture during this era have favoured particular viruses. There is also evidence, albeit less certain, that some plant viruses, including a few shown to have measurably evolving populations, have much more ancient origins. We discuss the possible reasons for this clear discordance between short-and long-term evolutionary rate estimates and how it might result from a large timescale dependence of the evolutionary rates. We also discuss briefly why it is useful to know the rates of evolution of plant viruses.

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Non-cultivated plants of the Tallgrass Prairie Preserve of northeastern Oklahoma frequently contain virus-like sequences in particulate fractions

Cited by 73 publications

References 14 publications

Genomic and biological characterization of chiltepín yellow mosaic virus, a new tymovirus infecting Capsicum annuum var. aviculare in Mexico

Genomic and biological characterization of chiltepín yellow mosaic virus, a new tymovirus infecting Capsicum annuum var. aviculare in Mexico

Determinants of taxonomic composition of plant viruses at the Nature Conservancy’s Tallgrass Prairie Preserve, Oklahoma

Time - the emerging dimension of plant virus studies

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