The community ecology of barley/cereal yellow dwarf viruses in Western US grasslands

Alison G. Power; Elizabeth T. Borer; Parviez Hosseini; Charles E. Mitchell; Eric W. Seabloom

doi:10.1016/j.virusres.2011.05.016

The community ecology of barley/cereal yellow dwarf viruses in Western US grasslands

Alison G. Power, Elizabeth T. Borer, Parviez Hosseini, Charles E. Mitchell, Eric W. Seabloom

Ecology, Evolution and Behavior

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

Research on plant viruses in natural ecosystems has been increasing rapidly over the past decade. This paper reviews recent research on the barley and cereal yellow dwarf viruses (B/CYDVs) in grasslands of the western US, beginning with the evidence that the disease caused by these viruses facilitated the invasion of western US grasslands by European annual grasses. Observational and experimental studies of B/CYDVs were carried out along a latitudinal gradient (33.8-48.8°N) from southern California to southern Canada. The prevalence and community composition of B/CYDVs were assessed over a variety of scales and under a range of biotic and abiotic conditions. The findings indicate that both biotic and abiotic factors are important influences on virus ecology and epidemiology. Introduced annual grasses are high-quality hosts that amplify both virus and vector populations in this system, but our research suggests that endemic perennial grasses are critically important for sustaining virus populations in contemporary grasslands largely composed of introduced species. Experiments indicated that increased phosphorus supply to hosts resulted in greater host biomass and higher virus prevalence. Using experimental exclosures, it was found that the presence of grazing vertebrate herbivores increased the abundance of annual grasses, resulting in increased virus prevalence. The results of these studies suggest that patterns of B/CYDV prevalence and coinfection in western US grasslands are strongly shaped by the interactions of host plants, vectors, vertebrate herbivores, and abiotic drivers including nutrients.

Original language	English (US)
Pages (from-to)	95-100
Number of pages	6
Journal	Virus research
Volume	159
Issue number	2
DOIs	https://doi.org/10.1016/j.virusres.2011.05.016
State	Published - Aug 2011

Bibliographical note

Funding Information:
The research described here would not have been possible without the assistance of many people and organizations. Field and lab assistance was provided by M. Dekkers, C. Kahlke, B. Martin, E. Orling, and J. Peters. We also acknowledge the support of the University of California Reserve System (McLaughlin Natural Reserve) , University of California Research and Extension Centers (Hopland REC and Sierra Foothill REC) , and the U.S. Fish and Wildlife Service (Baskett Slough and William L. Finley National Wildlife Refuges) . Support for this research was provided, in part, by NSF grants EF-0525666 and DEB-1015805 to E. T. Borer and E. W. Seabloom, EF-05-25641 and DEB-10-15909 to C.E. Mitchell, and EF-0525669 and DEB-1015903 to A.G. Power as part of the joint NSF-NIH Ecology of Infectious Disease program.

Keywords

Barley yellow dwarf virus
Cereal yellow dwarf virus
Coinfection
Grasslands
Luteoviridae
Perennial bunchgrasses

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.virusres.2011.05.016

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title = "The community ecology of barley/cereal yellow dwarf viruses in Western US grasslands",

abstract = "Research on plant viruses in natural ecosystems has been increasing rapidly over the past decade. This paper reviews recent research on the barley and cereal yellow dwarf viruses (B/CYDVs) in grasslands of the western US, beginning with the evidence that the disease caused by these viruses facilitated the invasion of western US grasslands by European annual grasses. Observational and experimental studies of B/CYDVs were carried out along a latitudinal gradient (33.8-48.8°N) from southern California to southern Canada. The prevalence and community composition of B/CYDVs were assessed over a variety of scales and under a range of biotic and abiotic conditions. The findings indicate that both biotic and abiotic factors are important influences on virus ecology and epidemiology. Introduced annual grasses are high-quality hosts that amplify both virus and vector populations in this system, but our research suggests that endemic perennial grasses are critically important for sustaining virus populations in contemporary grasslands largely composed of introduced species. Experiments indicated that increased phosphorus supply to hosts resulted in greater host biomass and higher virus prevalence. Using experimental exclosures, it was found that the presence of grazing vertebrate herbivores increased the abundance of annual grasses, resulting in increased virus prevalence. The results of these studies suggest that patterns of B/CYDV prevalence and coinfection in western US grasslands are strongly shaped by the interactions of host plants, vectors, vertebrate herbivores, and abiotic drivers including nutrients.",

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author = "Power, {Alison G.} and Borer, {Elizabeth T.} and Parviez Hosseini and Mitchell, {Charles E.} and Seabloom, {Eric W.}",

note = "Funding Information: The research described here would not have been possible without the assistance of many people and organizations. Field and lab assistance was provided by M. Dekkers, C. Kahlke, B. Martin, E. Orling, and J. Peters. We also acknowledge the support of the University of California Reserve System (McLaughlin Natural Reserve) , University of California Research and Extension Centers (Hopland REC and Sierra Foothill REC) , and the U.S. Fish and Wildlife Service (Baskett Slough and William L. Finley National Wildlife Refuges) . Support for this research was provided, in part, by NSF grants EF-0525666 and DEB-1015805 to E. T. Borer and E. W. Seabloom, EF-05-25641 and DEB-10-15909 to C.E. Mitchell, and EF-0525669 and DEB-1015903 to A.G. Power as part of the joint NSF-NIH Ecology of Infectious Disease program.",

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The community ecology of barley/cereal yellow dwarf viruses in Western US grasslands

Abstract

Bibliographical note

Keywords

UN SDGs

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