Strong genotype-by-genotype interactions between aphid-defensive symbionts and parasitoids persist across different biotic environments.

ABSTRACT: The dynamics of coevolution between hosts and parasites are influenced by their genetic interactions. Highly specific interactions, where the outcome of an infection depends on the precise combination of host and parasite genotypes (G × G interactions), have the potential to maintain genetic variation by inducing negative frequency-dependent selection. The importance of this effect also rests on whether such interactions are consistent across different environments or modified by environmental variation (G × G × E interaction). In the black bean aphid, Aphis fabae, resistance to its parasitoid Lysiphlebus fabarum is largely determined by the possession of a heritable bacterial endosymbiont, Hamiltonella defensa, with strong G × G interactions between H. defensa and L. fabarum. A key enviro

SUBMITTER: Gimmi E 

PROVIDER: S-EPMC9298302 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature