Antimicrobial peptide and sequence variation along a latitudinal gradient in two anurans

Mostra el registre complet Registre parcial de l'ítem

• dc.contributor.author Cortázar-Chinarro, Maria
• dc.contributor.author Meyer-Lucht, Yvonne
• dc.contributor.author Van der Valk, Tom
• dc.contributor.author Richter-Boix, Alex
• dc.contributor.author Laurila, Anssi
• dc.contributor.author Höglund, Jacob
• dc.date.accessioned 2024-05-06T05:37:20Z
• dc.date.available 2024-05-06T05:37:20Z
• dc.date.issued 2020
• dc.description.abstract Background. While there is evidence of both purifying and balancing selection in immune defense genes, large-scale genetic diversity in antimicrobial peptides (AMPs), an important part of the innate immune system released from dermal glands in the skin, has remained uninvestigated. Here we describe genetic diversity at three AMP loci (Temporin, Brevinin and Palustrin) in two ranid frogs (Rana arvalis and R. temporaria) along a 2000 km latitudinal gradient. We amplified and sequenced part of the Acidic Propiece domain and the hypervariable Mature Peptide domain (~ 150-200 bp) in the three genes using Illumina Miseq and expected to find decreased AMP genetic variation towards the northern distribution limit of the species similarly to studies on MHC genetic patterns. Results. We found multiple loci for each AMP and relatively high gene diversity, but no clear pattern of geographic genetic structure along the latitudinal gradient. We found evidence of trans-specific polymorphism in the two species, indicating a common evolutionary origin of the alleles. Temporin and Brevinin did not form monophyletic clades suggesting that they belong to the same gene family. By implementing codon evolution models we found evidence of strong positive selection acting on the Mature Peptide. We also found evidence of diversifying selection as indicated by divergent allele frequencies among populations and high Theta k values. Conclusion. Our results suggest that AMPs are an important source of adaptive diversity, minimizing the chance of microorganisms developing resistance to individual peptides.
• dc.format.mimetype application/pdf
• dc.identifier.citation Cortázar-Chinarro M, Meyer-Lucht Y, Van der Valk T, Richter-Boix A, Laurila A, Höglund J. Antimicrobial peptide and sequence variation along a latitudinal gradient in two anurans. BMC Genet. 2020 Dec;21(1):38. DOI: 10.1186/s12863-020-00839-1
• dc.identifier.doi http://dx.doi.org/10.1186/s12863-020-00839-1
• dc.identifier.issn 1471-2156
• dc.identifier.uri http://hdl.handle.net/10230/60001
• dc.language.iso eng
• dc.publisher BioMed Central
• dc.relation.ispartof BMC Genetics. 2020 Dec;21(1):38
• dc.rights This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.rights.uri http://creativecommons.org/licenses/by/4.0/
• dc.subject.keyword Rana
• dc.subject.keyword MHC
• dc.subject.keyword AMPs
• dc.subject.keyword Trans-specific polymorphism
• dc.subject.keyword Multi-locus system
• dc.title Antimicrobial peptide and sequence variation along a latitudinal gradient in two anurans
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/publishedVersion