Evidence for Hox Gene Duplication in Rainbow Trout (Oncorhynchus mykiss): A Tetraploid Model Species

2005 ◽  
Vol 61 (6) ◽  
pp. 804-818 ◽  
Author(s):  
Hooman K. Moghadam ◽  
Moira M. Ferguson ◽  
Roy G. Danzmann
Keyword(s):  
Rainbow Trout ◽  
Gene Duplication ◽  
Oncorhynchus Mykiss ◽  
Model Species ◽  
Hox Gene ◽  
Rainbow Trout Oncorhynchus Mykiss

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.

Molecular Characterization of Lysozyme Type II Gene in Rainbow Trout (Oncorhynchus mykiss): Evidence of Gene Duplication

2003 ◽  
Vol 14 (1) ◽  
pp. 7-12 ◽  
Author(s):  
Abhijit Mitra ◽  
Juli Foster‐Frey ◽  
Caird E. Rexroad ◽  
Kevin D. Wells ◽  
Robert J. Wall
Keyword(s):  
Rainbow Trout ◽  
Gene Duplication ◽  
Oncorhynchus Mykiss ◽  
Molecular Characterization ◽  
Type Ii ◽  
Rainbow Trout Oncorhynchus Mykiss

Cryopreservation of rainbow trout(Oncorhynchus mykiss)Blastomeres

1993 ◽  
Vol 6 (1) ◽  
pp. 77-80 ◽  
Author(s):  
Eric Nilsson ◽  
Joseph G. Cloud
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Rainbow Trout Oncorhynchus Mykiss

The essential oils of some medicinal plants on the immune system of rainbow trout (Oncorhynchus mykiss)

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
A Ghasemi Pirbalouti ◽  
E Pirali ◽  
G Pishkar ◽  
S Mohammadali Jalali ◽  
M Reyesi ◽  
...  
Keyword(s):  
Immune System ◽  
Rainbow Trout ◽  
Medicinal Plants ◽  
Oncorhynchus Mykiss ◽  
Essential Oils ◽  
Rainbow Trout Oncorhynchus Mykiss

Nuclear distribution of genotoxic damage in rainbow trout (Oncorhynchus mykiss) sperm after cryopreservation

2014 ◽  
Author(s):  
Silvia Gonzalez-Rojo ◽  
Cristina Fernandez-Diez ◽  
Marta Lombo ◽  
Vanesa Robles Rodriguez ◽  
Herraez Maria Paz
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Genotoxic Damage ◽  
Nuclear Distribution ◽  
Rainbow Trout Oncorhynchus Mykiss
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