Matches in SemOpenAlex for { <https://semopenalex.org/work/W2801818224> ?p ?o ?g. }
- W2801818224 abstract "Maintaining variation in immune genes, such as those of the major histocompatibility complex (MHC), is important for individuals in small, isolated populations to resist pathogens and parasites. The golden snub-nosed monkey (Rhinopithecus roxellana), an endangered primate endemic to China, has experienced a rapid reduction in numbers and severe population fragmentation over recent years. For this study, we measured the DRB diversity among 122 monkeys from three populations in the Qinling Mountains, and estimated the relative importance of different agents of selection in maintaining variation of DRB genes. We identified a total of 19 DRB sequences, in which five alleles were novel. We found high DRB variation in R. roxellana and three branches of evidence suggesting that balancing selection has contributed to maintaining MHC polymorphism over the long term in this species: i) different patterns of both genetic diversity and population differentiation were detected at MHC and neutral markers; ii) an excess of non-synonymous substitutions compared to synonymous substitutions at antigen binding sites, and maximum-likelihood-based random-site models, showed significant positive selection; and iii) phylogenetic analyses revealed a pattern of trans-species evolution for DRB genes. High levels of DRB diversity in these R. roxellana populations may reflect strong selection pressure in this species. Patterns of genetic diversity and population differentiation, positive selection, as well as trans-species evolution, suggest that pathogen-mediated balancing selection has contributed to maintaining MHC polymorphism in R. roxellana over the long term. This study furthers our understanding of the role pathogen-mediated balancing selection has in maintaining variation in MHC genes in small and fragmented populations of free-ranging vertebrates." @default.
- W2801818224 created "2018-05-17" @default.
- W2801818224 creator A5034579880 @default.
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- W2801818224 creator A5088768684 @default.
- W2801818224 date "2018-03-13" @default.
- W2801818224 modified "2023-10-13" @default.
- W2801818224 title "High polymorphism in MHC-DRB genes in golden snub-nosed monkeys reveals balancing selection in small, isolated populations" @default.
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- W2801818224 doi "https://doi.org/10.1186/s12862-018-1148-7" @default.
- W2801818224 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5851093" @default.
- W2801818224 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29534675" @default.
- W2801818224 hasPublicationYear "2018" @default.
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