Cross-Resistance: A Consequence of Bi-partite Host-Parasite Coevolution
Host-parasite coevolution can influence interactions of the host and parasite with the wider ecological community. One way that this may manifest is in cross-resistance towards other parasites, which has been observed to occur in some host-parasite evolution experiments. In this paper, we test for c...
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Veröffentlicht in: | Insects (Basel, Switzerland) Switzerland), 2018-02, Vol.9 (1), p.28 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Host-parasite coevolution can influence interactions of the host and parasite with the wider ecological community. One way that this may manifest is in cross-resistance towards other parasites, which has been observed to occur in some host-parasite evolution experiments. In this paper, we test for cross-resistance towards
and
in the red flour beetle
, which was previously allowed to coevolve with the generalist entomopathogenic fungus
. We combine survival and gene expression assays upon infection to test for cross-resistance and underlying mechanisms. We show that larvae of
that evolved with
under coevolutionary conditions were positively cross-resistant to the bacterium
but not
. Positive cross-resistance was mirrored at the gene expression level with markers that were representative of the oral route of infection being upregulated upon
exposure. We find that positive cross-resistance towards
evolved in
as a consequence of its coevolutionary interactions with
. This cross-resistance appears to be a consequence of resistance to oral toxicity. The fact that coevolution with
results in resistance to
but not
implies that
and
may share mechanisms of infection or toxicity not shared by
. This supports previous suggestions that
may possess Cry-like toxins, similar to those found in
, which allow it to infect orally. |
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ISSN: | 2075-4450 2075-4450 |
DOI: | 10.3390/insects9010028 |