PMID: 2124275Oct 1, 1990Paper

Compositional patterns in the nuclear genome of cold-blooded vertebrates

Journal of Molecular Evolution
G Bernardi, Giorgio Bernardi

Abstract

DNA preparations obtained from 122 species of fishes, 5 species of amphibians, and 13 species of reptiles were investigated in their compositional properties by analytical equilibrium centrifugation in CsCl density gradients. These species represented 21 orders of Osteichthyes, 3 orders of Chondrichthyes, 2 orders of amphibians, and 3 orders of reptiles. Modal buoyant densities of fish DNAs ranged from 1.696 to 1.707 g/cm3, the vast majority of values falling, however, between 1.699 and 1.704 g/cm3, which is the range covered by the DNAs of amphibians and reptiles. In all cases, DNA bands in CsCl were only weakly asymmetrical and only very rarely were accompanied by separate satellite bands (mostly on the GC-rich side). Intermolecular compositional heterogeneities were low in the vast majority of cases, and, like CsCl band asymmetries, at least partially due to cryptic or poorly resolved satellites. The present findings indicate, therefore, that DNAs from cold-blooded vertebrates are characterized by a number of common properties, namely a very wide spectrum of modal buoyant densities, low intermolecular compositional heterogeneities, low CsCl band asymmetries, and, in most cases, small amounts of satellite DNAs. In the case of...Continue Reading

References

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Citations

Mar 1, 1995·Journal of Molecular Evolution·S CacciòG Bernardi
Oct 1, 1990·Journal of Molecular Evolution·G Bernardi, G Bernardi
Jun 1, 1991·Journal of Molecular Evolution·B AïssaniG Bernardi
Aug 1, 1993·Journal of Molecular Evolution·G SabeurG Bernardi
Aug 1, 1993·Journal of Molecular Evolution·D Mouchiroud, G Bernardi
Jan 1, 1997·Journal of Molecular Evolution·G BernardiD Mouchiroud
Mar 1, 1992·Comparative Biochemistry and Physiology. B, Comparative Biochemistry·B E Grøsvik, A J Raae
Oct 2, 2002·Gene·Sandrine HughesGiorgio Bernardi
Oct 2, 2002·Gene·Giuseppe BucciarelliGiorgio Bernardi
Oct 17, 2002·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Paul WinnardMichael E Vayda
Jan 1, 1995·Journal of Computational Biology : a Journal of Computational Molecular Cell Biology·M S Gelfand
Apr 11, 1991·Nucleic Acids Research·S CrossA Bird
Nov 24, 2001·Molecular Biology and Evolution·A E Vinogradov
Jul 23, 1999·Annals of the New York Academy of Sciences·G D'OnofrioG Bernardi
Apr 15, 2008·BMC Evolutionary Biology·José L OliverPedro Carpena
Dec 26, 2008·BMC Genomics·Christelle Melodelima, Christian Gautier
Jan 1, 2009·Genetics and Molecular Biology·Antonio Jales Moraes Vasconcelos, Wagner Franco Molina
May 15, 2007·Proceedings of the National Academy of Sciences of the United States of America·Giorgio Bernardi
Nov 23, 2000·Current Opinion in Genetics & Development·C Gautier
Oct 2, 2002·Gene·Giuliana de Luca di RosetoGiorgio Bernardi
Oct 15, 2013·Molecular Ecology·Giacomo Bernardi
Oct 13, 2006·Gene·Annalisa Varriale, Giorgio Bernardi
Oct 28, 2006·Gene·Annalisa Varriale, Giorgio Bernardi
Dec 31, 2016·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Radka SymonováLouis Bernatchez
Jun 26, 2007·Genomics·Maria CostantiniGiorgio Bernardi
Jul 4, 2001·Nature Reviews. Genetics·A Eyre-Walker, L D Hurst
Nov 27, 2007·FEBS Letters·Giuseppe D'OnofrioSalvatore Saccone
Sep 1, 1993·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·A E Vinogradov, J M Rosanov

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