Data from: Diversity and composition of viral communities: coinfection of barley and cereal yellow dwarf viruses in California grasslands
Citation
Seabloom, Eric W.; Hosseini, Parviez R.; Power, Alison G.; Borer, Elizabeth T. (2018), Data from: Diversity and composition of viral communities: coinfection of barley and cereal yellow dwarf viruses in California grasslands, Dryad, Dataset, https://doi.org/10.5061/dryad.2bj836t
Abstract
Most species host multiple pathogens, yet field studies
rarely examine the processes determining pathogen diversity within
a single host or the effects of coinfection on pathogen dynamics in
natural systems. Coinfection can affect pathogen transmission and
virulence. In turn, coinfection can be regulated within hosts by interactions
such as cross-protective immunity or at broader spatial
scales via vector distributions. Using a general model, we demonstrate
that coinfection by a group of vectored pathogens is highest with
abundant generalist vectors and weak cross-protection and coinfection-
induced mortality. Using these predictions, we investigate the
distribution of five coexisting aphid-vectored, viral pathogens (barley
and cereal yellow dwarf luteoviruses and poleroviruses) in a native
perennial grass (Elymus glaucus) in both space (700 km) and time
(4 years). Observed coinfection rates were much higher than expected
at random, suggesting that within-host processes exerted weak effects
on within-host pathogen diversity. Covariance among viruses in
space and time was highest for viral species sharing a vector. Temporal
correlation arose from the synchronous invasion of two viruses transmitted
by a shared aphid species. On the basis of our modeling and
empirical results, we expect that factors external to individual hosts
may affect the coinfection dynamics in other communities hosting
vectored pathogens.
Usage notes
Funding
National Science Foundation, Award: 0444639, DEB 02-35624, 05-25666
Location
USA
California