Evolution and Expression of Tissue Globins in Ray-Finned Fishes
| Autor: | Daniel J. Macqueen, Michael Gallagher |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Fish Proteins
0301 basic medicine animal structures Fishes/classification Biology phylogeny Evolution Molecular 03 medical and health sciences Phylogenetics evolution Gene duplication Genetics Animals 14. Life underwater Globin Fish Proteins/genetics Globins/genetics Ecology Evolution Behavior and Systematics Phylogeny ray-finned fish Phylogenetic tree Cytoglobin Fishes Oxygen transport Anatomy Biological Evolution Globins 030104 developmental biology Evolutionary biology oxygen transport Neuroglobin gene expression Tandem exon duplication globin gene family Research Article |
| Zdroj: | Gallagher, M D & Macqueen, D J 2016, ' Evolution and Expression of Tissue Globins in Ray-Finned Fishes ', Genome Biology and Evolution, vol. 9, no. 1, pp. 32-47 . https://doi.org/10.1093/gbe/evw266 Genome Biology and Evolution |
| DOI: | 10.1093/gbe/evw266 |
| Popis: | The globin gene family encodes oxygen-binding hemeproteins conserved across the major branches of multicellular life. The origins and evolutionary histories of complete globin repertoires have been established for many vertebrates, but there remain major knowledge gaps for ray-finned fish. Therefore, we used phylogenetic, comparative genomic and gene expression analyses to discover and characterize canonical “non-blood” globin family members (i.e., myoglobin, cytoglobin, neuroglobin, globin-X, and globin-Y) across multiple ray-finned fish lineages, revealing novel gene duplicates (paralogs) conserved from whole genome duplication (WGD) and small-scale duplication events. Our key findings were that: (1) globin-X paralogs in teleosts have been retained from the teleost-specific WGD, (2) functional paralogs of cytoglobin, neuroglobin, and globin-X, but not myoglobin, have been conserved from the salmonid-specific WGD, (3) triplicate lineage-specific myoglobin paralogs are conserved in arowanas (Osteoglossiformes), which arose by tandem duplication and diverged under positive selection, (4) globin-Y is retained in multiple early branching fish lineages that diverged before teleosts, and (5) marked variation in tissue-specific expression of globin gene repertoires exists across ray-finned fish evolution, including several previously uncharacterized sites of expression. In this respect, our data provide an interesting link between myoglobin expression and the evolution of air breathing in teleosts. Together, our findings demonstrate great-unrecognized diversity in the repertoire and expression of nonblood globins that has arisen during ray-finned fish evolution. |
| Databáze: | OpenAIRE |
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