An alternative route of bacterial infection associated with a novel resistance locus in the Daphnia-Pasteuria host-parasite system.

ABSTRACT: To understand the mechanisms of antagonistic coevolution, it is crucial to identify the genetics of parasite resistance. In the Daphnia magna-Pasteuria ramosa host-parasite system, the most important step of the infection process is the one in which P. ramosa spores attach to the host's foregut. A matching-allele model (MAM) describes the host-parasite genetic interactions underlying attachment success. Here we describe a new P. ramosa genotype, P15, which, unlike previously studied genotypes, attaches to the host's hindgut, not to its foregut. Host resistance to P15 attachment shows great diversity across natural populations. In contrast to P. ramosa genotypes that use foregut attachment, P15 shows some quantitative variation in attachment success and does not always lead to successful in

SUBMITTER: Bento G 

PROVIDER: S-EPMC7490384 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature