FN Archimer Export Format PT J TI Hyperdiverse Gene Cluster in Snail Host Conveys Resistance to Human Schistosome Parasites BT AF TENNESSEN, Jacob A. THERON, Andre MARINE, Melanie YEH, Jan-Ying ROGNON, Anne BLOUIN, Michael S. AS 1:1;2:2;3:1;4:1;5:2;6:1; FF 1:;2:;3:;4:;5:;6:; C1 Oregon State Univ, Dept Integrat Biol, Corvallis, OR 97331 USA. Univ Perpignan, CNRS, UMR 5244, Ecol & Evolut Interact 2EI, F-66025 Perpignan, France. C2 UNIV OREGON STATE, USA UNIV PERPIGNAN, FRANCE UM IHPE IN DOAJ IF 6.661 TC 50 UR https://archimer.ifremer.fr/doc/00615/72714/71716.pdf https://archimer.ifremer.fr/doc/00615/72714/71717.pdf https://archimer.ifremer.fr/doc/00615/72714/71718.pdf https://archimer.ifremer.fr/doc/00615/72714/71719.xls LA English DT Article AB Schistosomiasis, a neglected global pandemic, may be curtailed by blocking transmission of the parasite via its intermediate hosts, aquatic snails. Elucidating the genetic basis of snail-schistosome interaction is a key to this strategy. Here we map a natural parasite-resistance polymorphism from a Caribbean population of the snail Biomphalaria glabrata. In independent experimental evolution lines, RAD genotyping shows that the same genomic region responds to selection for resistance to the parasite Schistosoma mansoni. A dominant allele in this region conveys an 8-fold decrease in the odds of infection. Fine-mapping and RNA-Seq characterization reveal a <1Mb region, the Guadeloupe Resistance Complex (GRC), with 15 coding genes. Seven genes are single-pass transmembrane proteins with putative immunological roles, most of which show strikingly high nonsynonymous divergence (5-10%) among alleles. High linkage disequilibrium among three intermediate-frequency (>25%) haplotypes across the GRC, a significantly non-neutral pattern, suggests that balancing selection maintains diversity at the GRC. Thus, the GRC resembles immune gene complexes seen in other taxa and is likely involved in parasite recognition. The GRC is a potential target for controlling transmission of schistosomiasis, including via genetic manipulation of snails. PY 2015 PD MAR SO Plos Genetics SN 1553-7404 PU Public Library Science VL 11 IS 3 UT 000352197100049 DI 10.1371/journal.pgen.1005067 ID 72714 ER EF