Evolution of ancient satellite DNAs in sturgeon genomes.
Identifieur interne : 001009 ( Main/Exploration ); précédent : 001008; suivant : 001010Evolution of ancient satellite DNAs in sturgeon genomes.
Auteurs : Francisca Robles [Espagne] ; Roberto De La Herrán ; Arne Ludwig ; Carmelo Ruiz Rej N ; Manuel Ruiz Rej N ; Manuel A. Garrido-RamosSource :
- Gene [ 0378-1119 ] ; 2004.
English descriptors
- KwdEn :
- Animals, Blotting, Southern, Cloning, Molecular, DNA (chemistry), DNA (genetics), DNA (metabolism), DNA, Satellite (chemistry), DNA, Satellite (genetics), DNA, Satellite (metabolism), Deoxyribonuclease HindIII (metabolism), Deoxyribonucleases, Type II Site-Specific (metabolism), Evolution, Molecular, Fishes (classification), Fishes (genetics), Genetic Variation, Genome, Molecular Sequence Data, Phylogeny, Sequence Analysis, DNA, Species Specificity.
- MESH :
- chemical , chemistry : DNA, DNA, Satellite.
- chemical , genetics : DNA, DNA, Satellite.
- chemical , metabolism : DNA, DNA, Satellite, Deoxyribonuclease HindIII, Deoxyribonucleases, Type II Site-Specific.
- classification : Fishes.
- genetics : Fishes.
- Animals, Blotting, Southern, Cloning, Molecular, Evolution, Molecular, Genetic Variation, Genome, Molecular Sequence Data, Phylogeny, Sequence Analysis, DNA, Species Specificity.
Abstract
This study characterizes a repetitive DNA family of sequences in sturgeon, the PstI satellite DNA. We have found a high degree of preservation for these sequences, which are present in all 13 species analyzed, including within the genera Acipenser, Huso, and Scaphirhynchus of the family Acipenseridae. This is one of the most ancient satellite DNAs found to date, because it has been estimated to be more than 100 million years old. Alternatively, to the current view that most satellite DNAs are species-specific or preserved in a few closely related species, the PstI family and other previously characterized sturgeon satellite DNA, the HindIII, represent the most fascinating exceptions to the rapid sequence change usually undergone by satellite DNAs. Here, we compare the evolutionary pattern of these two satellite DNA families, PstI and HindIII, which differ markedly in length, sequence, and nucleotide composition. We have found that, in contrast to the situation in most other living beings, a high degree of preservation, a slow sequence change rate and slowed concerted evolution, appears to be a general rule for sturgeon satellite DNAs. The possible causes for all these features are discussed in the light of the evolutionary specifics found within these ancient organisms.
DOI: 10.1016/j.gene.2004.06.001
PubMed: 15302414
Affiliations:
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Garrido-Ramos</name></author></analytic><series><title level="j">Gene</title><idno type="ISSN">0378-1119</idno><imprint><date when="2004" type="published">2004</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Blotting, Southern</term><term>Cloning, Molecular</term><term>DNA (chemistry)</term><term>DNA (genetics)</term><term>DNA (metabolism)</term><term>DNA, Satellite (chemistry)</term><term>DNA, Satellite (genetics)</term><term>DNA, Satellite (metabolism)</term><term>Deoxyribonuclease HindIII (metabolism)</term><term>Deoxyribonucleases, Type II Site-Specific (metabolism)</term><term>Evolution, Molecular</term><term>Fishes (classification)</term><term>Fishes (genetics)</term><term>Genetic Variation</term><term>Genome</term><term>Molecular Sequence Data</term><term>Phylogeny</term><term>Sequence Analysis, DNA</term><term>Species Specificity</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>DNA</term><term>DNA, Satellite</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>DNA</term><term>DNA, Satellite</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>DNA</term><term>DNA, Satellite</term><term>Deoxyribonuclease HindIII</term><term>Deoxyribonucleases, Type II Site-Specific</term></keywords><keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Fishes</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Fishes</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Blotting, Southern</term><term>Cloning, Molecular</term><term>Evolution, Molecular</term><term>Genetic Variation</term><term>Genome</term><term>Molecular Sequence Data</term><term>Phylogeny</term><term>Sequence Analysis, DNA</term><term>Species Specificity</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study characterizes a repetitive DNA family of sequences in sturgeon, the PstI satellite DNA. We have found a high degree of preservation for these sequences, which are present in all 13 species analyzed, including within the genera Acipenser, Huso, and Scaphirhynchus of the family Acipenseridae. This is one of the most ancient satellite DNAs found to date, because it has been estimated to be more than 100 million years old. Alternatively, to the current view that most satellite DNAs are species-specific or preserved in a few closely related species, the PstI family and other previously characterized sturgeon satellite DNA, the HindIII, represent the most fascinating exceptions to the rapid sequence change usually undergone by satellite DNAs. Here, we compare the evolutionary pattern of these two satellite DNA families, PstI and HindIII, which differ markedly in length, sequence, and nucleotide composition. We have found that, in contrast to the situation in most other living beings, a high degree of preservation, a slow sequence change rate and slowed concerted evolution, appears to be a general rule for sturgeon satellite DNAs. The possible causes for all these features are discussed in the light of the evolutionary specifics found within these ancient organisms.</div></front></TEI><affiliations><list><country><li>Espagne</li></country><region><li>Andalousie</li></region><settlement><li>Grenade (Espagne)</li></settlement><orgName><li>Université de Grenade</li></orgName></list><tree><noCountry><name sortKey="De La Herran, Roberto" sort="De La Herran, Roberto" uniqKey="De La Herran R" first="Roberto" last="De La Herrán">Roberto De La Herrán</name><name sortKey="Garrido Ramos, Manuel A" sort="Garrido Ramos, Manuel A" uniqKey="Garrido Ramos M" first="Manuel A" last="Garrido-Ramos">Manuel A. Garrido-Ramos</name><name sortKey="Ludwig, Arne" sort="Ludwig, Arne" uniqKey="Ludwig A" first="Arne" last="Ludwig">Arne Ludwig</name><name sortKey="Ruiz Rej N, Carmelo" sort="Ruiz Rej N, Carmelo" uniqKey="Ruiz Rej N C" first="Carmelo" last="Ruiz Rej N">Carmelo Ruiz Rej N</name><name sortKey="Ruiz Rej N, Manuel" sort="Ruiz Rej N, Manuel" uniqKey="Ruiz Rej N M" first="Manuel" last="Ruiz Rej N">Manuel Ruiz Rej N</name></noCountry><country name="Espagne"><region name="Andalousie"><name sortKey="Robles, Francisca" sort="Robles, Francisca" uniqKey="Robles F" first="Francisca" last="Robles">Francisca Robles</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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