Identification of an additional two-cysteine containing type I interferon in rainbow trout Oncorhynchus mykiss provides evidence of a major gene duplication event within this gene family in teleosts

2009 ◽  
Vol 61 (4) ◽  
pp. 315-325 ◽  
Author(s):  
Mingxian Chang ◽  
Pin Nie ◽  
Bertrand Collet ◽  
Christopher J. Secombes ◽  
Jun Zou
Keyword(s):  
Rainbow Trout ◽  
Gene Duplication ◽  
Oncorhynchus Mykiss ◽  
Gene Family ◽  
Type I Interferon ◽  
Major Gene ◽  
Duplication Event ◽  
Type I ◽  
Gene Duplication Event ◽  
Rainbow Trout Oncorhynchus Mykiss

scholarly journals Early Archean origin of heterodimeric Photosystem I

2017 ◽  
Author(s):  
Tanai Cardona
Keyword(s):  
Gene Duplication ◽  
Photosystem I ◽  
Water Oxidation ◽  
Duplication Event ◽  
Oxygenic Photosynthesis ◽  
Recent Common Ancestor ◽  
Type I ◽  
Reaction Centre ◽  
Gene Duplication Event ◽  
Most Recent Common Ancestor

AbstractWhen and how oxygenic photosynthesis originated remains controversial. Wide uncertainties exist for the earliest detection of biogenic oxygen in the geochemical record or the origin of water oxidation in ancestral lineages of the phylum Cyanobacteria. A unique trait of oxygenic photosynthesis is that the process uses a Type I reaction centre with a heterodimeric core, also known as Photosystem I, made of two distinct but homologous subunits, PsaA and PsaB. In contrast, all other known Type I reaction centres in anoxygenic phototrophs have a homodimeric core. A compelling hypothesis for the evolution of a heterodimeric Type I reaction centre is that the gene duplication that allowed the divergence of PsaA and PsaB was an adaptation to incorporate photoprotective mechanisms against the formation of reactive oxygen species, therefore occurring after the origin of water oxidation to oxygen. Here I show, using sequence comparisons and Bayesian relaxed molecular clocks that this gene duplication event may have occurred in the early Archean more than 3.4 billion years ago, long before the most recent common ancestor of crown group Cyanobacteria and the Great Oxidation Event. If the origin of water oxidation predated this gene duplication event, then that would place primordial forms of oxygenic photosynthesis at a very early stage in the evolutionary history of life.

scholarly journals microRNA-29b knocks down collagen type I production in cultured rainbow trout (Oncorhynchus mykiss) cardiac fibroblasts

2019 ◽  
Vol 222 (17) ◽  
pp. jeb202788
Author(s):  
Elizabeth F. Johnston ◽  
Ivan G. Cadonic ◽  
Paul M. Craig ◽  
Todd E. Gillis
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Collagen Type ◽  
Cardiac Fibroblasts ◽  
Collagen Type I ◽  
Type I ◽  
Rainbow Trout Oncorhynchus Mykiss

scholarly journals A Type I and Type II microsatellite linkage map of Rainbow trout (Oncorhynchus mykiss) with presumptive coverage of all chromosome arms

BMC Genomics ◽  
2006 ◽  
Vol 7 (1) ◽  
Author(s):  
René Guyomard ◽  
Stéphane Mauger ◽  
Kamila Tabet-Canale ◽  
Sylvain Martineau ◽  
Carine Genet ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Linkage Map ◽  
Type I ◽  
Type Ii ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Microsatellite Linkage

scholarly journals New insights into the nutritional regulation of gluconeogenesis in carnivorous rainbow trout (Oncorhynchus mykiss): a gene duplication trail

2015 ◽  
Vol 47 (7) ◽  
pp. 253-263 ◽  
Author(s):  
Lucie Marandel ◽  
Iban Seiliez ◽  
Vincent Véron ◽  
Sandrine Skiba-Cassy ◽  
Stéphane Panserat
Keyword(s):  
Rainbow Trout ◽  
Gene Duplication ◽  
Oncorhynchus Mykiss ◽  
High Carbohydrate Diet ◽  
Evolutionary Analysis ◽  
Nutritional Regulation ◽  
Dietary Carbohydrates ◽  
Carbohydrate Diet ◽  
High Carbohydrate ◽  
Rainbow Trout Oncorhynchus Mykiss

The rainbow trout ( Oncorhynchus mykiss) is considered to be a strictly carnivorous fish species that is metabolically adapted for high catabolism of proteins and low utilization of dietary carbohydrates. This species consequently has a “glucose-intolerant” phenotype manifested by persistent hyperglycemia when fed a high-carbohydrate diet. Gluconeogenesis in adult fish is also poorly, if ever, regulated by carbohydrates, suggesting that this metabolic pathway is involved in this specific phenotype. In this study, we hypothesized that the fate of duplicated genes after the salmonid-specific 4th whole genome duplication (Ss4R) may have led to adaptive innovation and that their study might provide new elements to enhance our understanding of gluconeogenesis and poor dietary carbohydrate use in this species. Our evolutionary analysis of gluconeogenic genes revealed that pck1, pck2, fbp1a, and g6pca were retained as singletons after Ss4r, while g6pcb1, g6pcb2, and fbp1b ohnolog pairs were maintained. For all genes, duplication may have led to sub- or neofunctionalization. Expression profiles suggest that the gluconeogenesis pathway remained active in trout fed a no-carbohydrate diet. When trout were fed a high-carbohydrate diet (30%), most of the gluconeogenic genes were non- or downregulated, except for g6pbc2 ohnologs, whose RNA levels were surprisingly increased. This study demonstrates that Ss4R in trout involved adaptive innovation via gene duplication and via the outcome of the resulting ohnologs. Indeed, maintenance of ohnologous g6pcb2 pair may contribute in a significant way to the glucose-intolerant phenotype of trout and may partially explain its poor use of dietary carbohydrates.

Sequence of Sockeye Salmon Type 1 and 2 Growth Hormone Genes and the Relationship of Rainbow Trout with Atlantic and Pacific Salmon

1993 ◽  
Vol 50 (8) ◽  
pp. 1738-1748 ◽  
Author(s):  
Robert H. Devlin
Keyword(s):  
Growth Hormone ◽  
Rainbow Trout ◽  
Gene Duplication ◽  
Atlantic Salmon ◽  
Sockeye Salmon ◽  
Pacific Salmon ◽  
Duplication Event ◽  
Breeding Population ◽  
Gene Duplication Event ◽  
Relationship Of

Two types of growth hormone genes have been isolated from sockeye salmon (Oncorhynchus nerka) and their complete nucleotide sequence determined. The genes encode proteins of 210 amino acids and show considerable similarity to growth hormones characterized in other salmonids and fishes. The two genes presumably arose from a gene duplication event that generated the tetraploid condition in salmonids and are highly conserved in their coding regions. The sequences have diverged approximately 18% in noncoding regions since the gene duplication event and show numerous deletions and/or insertions. Isolation of these two genes from a Pacific salmon allows comparison of their sequences to growth hormone genes characterized from rainbow trout and from Atlantic salmon. The results indicate that rainbow trout is more similar to Pacific than to Atlantic salmon and suggest that Atlantic salmon diverged from Pacific salmonids at a time when sockeye and rainbow trout were part of a common breeding population. These results support the recent reclassification of rainbow trout from the genus Salmo to Oncorhynchus.

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