Incidence of cereal and pasture viruses in New Zealand's native grasses

Delmiglio, Catia; Pearson, M. N.; Lister, R.A.; Guy, P. L.

doi:10.1111/j.1744-7348.2010.00406.x

Cited by 22 publications

(12 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, detection of Cocksfoot mottle virus (CfMV) in New Zealand is most probably of foreign origin as it has no beetle vector there [ 7 ] and its host plant cocksfoot has been introduced [ 8 ]. During recent decades, CfMV has colonized new native host species in New Zealand [ 9 ].…”

Section: Geographical Distribution Host Range Transmissionmentioning

confidence: 99%

Overview on Sobemoviruses and a Proposal for the Creation of the Family Sobemoviridae

Sõmera

Sarmiento

Truve

2015

Viruses

View full text Add to dashboard Cite

The genus Sobemovirus, unassigned to any family, consists of viruses with single-stranded plus-oriented single-component RNA genomes and small icosahedral particles. Currently, 14 species within the genus have been recognized by the International Committee on Taxonomy of Viruses (ICTV) but several new species are to be recognized in the near future. Sobemovirus genomes are compact with a conserved structure of open reading frames and with short untranslated regions. Several sobemoviruses are important pathogens. Moreover, over the last decade sobemoviruses have become important model systems to study plant virus evolution. In the current review we give an overview of the structure and expression of sobemovirus genomes, processing and functions of individual proteins, particle structure, pathology and phylogenesis of sobemoviruses as well as of satellite RNAs present together with these viruses. Based on a phylogenetic analysis we propose that a new family Sobemoviridae should be recognized including the genera Sobemovirus and Polemovirus. Finally, we outline the future perspectives and needs for the research focusing on sobemoviruses.

show abstract

Section: Geographical Distribution Host Range Transmissionmentioning

confidence: 99%

Overview on Sobemoviruses and a Proposal for the Creation of the Family Sobemoviridae

Sõmera

Sarmiento

Truve

2015

Viruses

View full text Add to dashboard Cite

show abstract

“…Accordingly, relative quantification of the WDV titre in inoculated wheat and ryegrass plants evidently confirmed that the WDV titre is much lower in inoculated grass compared to infected cereal. A low titre of virus inoculum in grasses compared to cereals has been reported previously Accepted Article in the case of BYDV-PAV (Delmiglio et al, 2010). However, the transmission experiments show that even with a low virus titre, grass may still play a role in virus dissemination.…”

Section: Discussionmentioning

confidence: 63%

Reservoirs of plant virus disease: Occurrence of wheat dwarf virus and barley/cereal yellow dwarf viruses in Sweden

2021

View full text Add to dashboard Cite

Non-crop plants such as grasses and volunteer plants are an inseparable part of the flora of crop fields, and can influence virus incidence in crop plants. The presence of grasses as virus reservoirs can lead to a higher probability of virus incidence in crop plants. However, the role of reservoirs as an inoculum source in agricultural fields has not been well studied for many viral diseases of crops. Grasses have been found to constitute potential reservoirs for cereal-infecting viruses in different parts of the worlds. This study revealed that cereal-infecting viruses such as wheat dwarf virus (WDV), barley yellow dwarf viruses (BYDVs) and cereal yellow dwarf virus-RPV (CYDV-RPV) can be found among ryegrass growing in or around winter wheat fields. Phylogenetic analysis showed that a WDV isolate from ryegrass was a typical WDV-E isolate that infects wheat. Similarly, a ryegrass isolate of BYDV-PAV grouped in a clade together with other BYDV-PAV isolates. Inoculation experiments under greenhouse condition confirmed that annual ryegrass of various genotypes can be infected with WDV to a very low titre.Moreover, leafhoppers were able to acquire WDV from infected ryegrass plants, despite the low titre, and transmit the virus to wheat resulting in symptoms. Information from the grass reservoir may contribute to improving strategies for controlling plant virus outbreaks in the field. Knowledge of the likely levels of virus in potential reservoir plants can be used to inform the decisions on insect vector control strategies, and may help to prevent virus disease outbreaks in the future.

show abstract

“…; Delmiglio et al . ), suggesting that communities that include P. pratensis and P. dilatatum will support greater virus prevalence. This effect could be magnified if the presence of these species increases virus transmission to other host species (Power & Mitchell ).…”

Section: Discussionmentioning

confidence: 99%

“…Such differences in infection prevalence among host species could be a result of species-specific characteristics that determine a host's ability to support vector populations, transmit infection to new hosts and/or ability to become infected (LoGiudice et al 2003;Borer et al 2007;Cronin et al 2010). These differences among host species can lead to effects of community composition on virus prevalence Delmiglio et al 2010), suggesting that communities that include P. pratensis and P. dilatatum will support greater virus prevalence. This effect could be magnified if the presence of these species increases virus transmission to other host species (Power & Mitchell 2004).…”

Section: Discussionmentioning

confidence: 99%

Climate drivers, host identity and fungal endophyte infection determine virus prevalence in a grassland ecosystem

2014

View full text Add to dashboard Cite

Summary1. Under climate change, alterations to precipitation and temperature regimes are expected to impact ecosystem structure and function. These impacts may in part be determined by feedbacks between plants and associated microbes, including both endophytic fungal symbionts and viral pathogens. 2. To test potential key components of these feedbacks in a grassland system, we conducted a field experiment that factorially manipulated temperature regime, precipitation regime and endophyte infection of a dominant species, Schedonorus arundinaceus. After one growing season, we evaluated the four most frequently occurring grass species for infection by three species of barley and cereal yellow dwarf viruses (B/CYDVs). For S. arundinaceus, we also tracked changes in viral prevalence over an additional two growing seasons, for a total of three growing seasons. 3. Plant species identity played a strong role in determining virus prevalence; Poa pratensis and Paspalum dilatatum were more frequently infected than either S. arundinaceus (endophyte infected or endophyte free) or Eleusine indica. Both elevated temperature and elevated precipitation impacted virus prevalence, but effects varied among years and interacted with fungal endophyte symbiosis for S. arundinaceus. 4. In the final year of data collection, elevated precipitation increased virus prevalence in endophyte-infected, but not endophyte-free, S. arundinaceus. In the same year, but regardless of endophyte infection, elevated temperature by itself increased virus prevalence for S. arundinaceus. This effect of temperature on virus prevalence may have been driven by vector abundance because the viruses are obligately aphid-transmitted, and aphids were found more frequently in heated plots. 5. Synthesis. Overall, our investigation experimentally demonstrates strong combined impacts of biotic and abiotic factors on disease dynamics in a grassland system. Impacts of climate change on virus prevalence in grasslands may depend on the responses of aphid vectors and the presence of endophytic fungal symbionts.

show abstract

Incidence of cereal and pasture viruses in New Zealand's native grasses

Cited by 22 publications

References 37 publications

Overview on Sobemoviruses and a Proposal for the Creation of the Family Sobemoviridae

Overview on Sobemoviruses and a Proposal for the Creation of the Family Sobemoviridae

Reservoirs of plant virus disease: Occurrence of wheat dwarf virus and barley/cereal yellow dwarf viruses in Sweden

Climate drivers, host identity and fungal endophyte infection determine virus prevalence in a grassland ecosystem

Contact Info

Product

Resources

About