10.5061/DRYAD.V31K428
Hrcek, Jan
University of Oxford
Institute of Entomology
Parker, Benjamin J.
University of Oxford
University of Rochester
McLean, Ailsa H.C.
University of Oxford
Simon, Jean-Christophe
Agrocampus Ouest
Mann, Ciara M.
University of Oxford
Godfray, H. Charles J.
University of Oxford
Data from: Hosts do not simply outsource pathogen resistance to protective
symbionts
Dryad
dataset
2018
Symbiosis
Robustness
ecological immunology
Pandora neoaphidis
Acyrthosiphon pisum
2018-05-15T14:37:30Z
2018-05-15T14:37:30Z
en
https://doi.org/10.1111/evo.13512
45568 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Microbial symbionts commonly protect their hosts from natural enemies, but
it is unclear how protective symbionts influence the evolution of host
immunity to pathogens. One possibility is that ‘extrinsic’ protection
provided by symbionts allows hosts to reduce investment in ‘intrinsic’
immunological resistance mechanisms. We tested this idea using pea aphids
(Acyrthosiphon pisum) and their facultative bacterial symbionts that
increase host resistance to the fungal pathogen Pandora neoaphidis. The
pea aphid taxon is composed of multiple host plant associated populations
called biotypes, which harbour characteristic communities of symbionts. We
found that biotypes that more frequently carry protective symbionts have
higher, rather than lower, levels of intrinsic resistance. Within a
biotype there was no difference in intrinsic resistance between clones
that did and did not carry a protective symbiont. The host plant on which
an aphid feeds did not strongly influence intrinsic resistance. We
describe a simple conceptual model of the interaction between intrinsic
and extrinsic resistance and suggest that our results may be explained by
selection favouring both the acquisition of protective symbionts and
enhanced intrinsic resistance in habitats with high pathogen pressure.
Such combined protection is potentially more robust than intrinsic
resistance alone.
Primary data from experiment 1 and 2File contains primary data of aphid
survival and sporulation in experiment 1 and 2, and also data on symbiont
field frequency taken from Henry et al 2013 and used for correlation with
data from experiment 1.Hrcek_et_al_Evolution 2018
_Primary_data_from_experiment_1_and_2.xls
Europe