caa a22 4500 445821337 CHVBK 20180317145245.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00239-011-9446-3 doi (NATIONALLICENCE)springer-10.1007/s00239-011-9446-3 Characterization and Evolution of MHC Class II B Genes in Ardeid Birds [Elektronische Daten] [Li Li, Xiaopin Zhou, Xiaolin Chen] Major histocompatibility complex (MHC) is a multi-gene family that is very suitable to investigate a wide range of open questions in evolutionary ecology. In this study, we characterized two expressed MHC class II B genes (DAB1 and DAB2) in the Grey Heron (Aves: Ardea cinerea). We further developed the primer pairs to amplify and sequence two MHC class II B loci in ten ardeid birds. Phylogenetic analysis revealed that different parts of the genes showed different evolutionary patterns. The exon 2 sequences tended to cluster two gene-specific lineages. In each lineage, exon 2 sequences from several species showed closer relationships than sequences within species, and two shared identical alleles were found between species (Egretta sacra and Nycticorax nycticorax; Egretta garzetta and Bubulcus ibis), supporting the hypothesis of trans-species polymorphism. In contrast, the species-specific intron 2 plus partial exon 3 tree suggested that DAB1 and DAB2 were subject to concerted evolution. GENECONV analyses showed the gene exchange played an important role in the ardeid MHC evolution. Springer Science+Business Media, LLC, 2011 MHC II B gene nationallicence Ardeid birds nationallicence Trans-species polymorphism nationallicence Concerted evolution nationallicence Genetic exchange nationallicence Li Li Key Laboratory of Ministry of Education for Coast and Wetland Ecosystems School of Life Sciences, Xiamen University, 422, Siming South Rd, Siming, 361005, Xiamen, China aut Zhou Xiaopin Key Laboratory of Ministry of Education for Coast and Wetland Ecosystems School of Life Sciences, Xiamen University, 422, Siming South Rd, Siming, 361005, Xiamen, China aut Chen Xiaolin Key Laboratory of Ministry of Education for Coast and Wetland Ecosystems School of Life Sciences, Xiamen University, 422, Siming South Rd, Siming, 361005, Xiamen, China aut Journal of Molecular Evolution Springer-Verlag 72/5-6(2011-06-01), 474-483 0022-2844 72:5-6<474 2011 72 239 https://doi.org/10.1007/s00239-011-9446-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00239-011-9446-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Li Key Laboratory of Ministry of Education for Coast and Wetland Ecosystems School of Life Sciences, Xiamen University, 422, Siming South Rd, Siming, 361005, Xiamen, China aut NATIONALLICENCE 700 1- Zhou Xiaopin Key Laboratory of Ministry of Education for Coast and Wetland Ecosystems School of Life Sciences, Xiamen University, 422, Siming South Rd, Siming, 361005, Xiamen, China aut NATIONALLICENCE 700 1- Chen Xiaolin Key Laboratory of Ministry of Education for Coast and Wetland Ecosystems School of Life Sciences, Xiamen University, 422, Siming South Rd, Siming, 361005, Xiamen, China aut NATIONALLICENCE 773 0- Journal of Molecular Evolution Springer-Verlag 72/5-6(2011-06-01), 474-483 0022-2844 72:5-6<474 2011 72 239 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer