Mitochondrial DNA length variation and heteroplasmy in populations of white sturgeon (Acipenser transmontanus)
Identifieur interne : 001C62 ( Main/Curation ); précédent : 001C61; suivant : 001C63Mitochondrial DNA length variation and heteroplasmy in populations of white sturgeon (Acipenser transmontanus)
Auteurs : J. R. Brown [Canada] ; A. T. Beckenbach ; M. J. SmithSource :
- Genetics [ 0016-6731 ] ; 1992.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Milieu marin.
English descriptors
- KwdEn :
- Acipenser transmontanus, Animals, Base Sequence, Blotting, Southern, Copy number, DNA Probes, DNA, Mitochondrial (genetics), Fishes (genetics), Gene frequency, Genotype, Marine environment, Mitochondrial DNA, Molecular Sequence Data, Phylogeny, Polymorphism, Genetic (genetics), Restriction fragment length polymorphism, Tandemly repeated sequence.
- MESH :
- chemical , genetics : DNA, Mitochondrial.
- chemical : DNA Probes.
- genetics : Fishes, Polymorphism, Genetic.
- Animals, Base Sequence, Blotting, Southern, Genotype, Molecular Sequence Data, Phylogeny.
Abstract
Southern blot analysis was used to quantify the extent of mtDNA D-loop length variation in two populations of white sturgeon, Acipenser transmontanus. Over 42% of individuals were heteroplasmic for up to six different mtDNA length variants attributable to varying copy numbers of an 82-bp repeat sequence. Chi-square analyses revealed that the frequencies of length genotypes and the incidence of heteroplasmy were significantly different between Fraser and Columbia River sturgeon populations but not between restriction site haplotypes. Heteroplasmic fish have, on average, higher copy number than homoplasmic fish
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R." last="Brown">J. R. Brown</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Simon Fraser univ., inst. molecular biology biochemistry, dep. biological sci.</s1><s2>Burnaby BC V5A 1S6</s2><s3>CAN</s3></inist:fA14><country>Canada</country><wicri:noRegion>Burnaby BC V5A 1S6</wicri:noRegion></affiliation></author><author><name sortKey="Beckenbach, A T" sort="Beckenbach, A T" uniqKey="Beckenbach A" first="A. T." last="Beckenbach">A. T. Beckenbach</name></author><author><name sortKey="Smith, M J" sort="Smith, M J" uniqKey="Smith M" first="M. J." last="Smith">M. J. Smith</name></author></analytic><series><title level="j" type="main">Genetics</title><title level="j" type="abbreviated">Genetics</title><idno type="ISSN">0016-6731</idno><imprint><date when="1992">1992</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Genetics</title><title level="j" type="abbreviated">Genetics</title><idno type="ISSN">0016-6731</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser transmontanus</term><term>Animals</term><term>Base Sequence</term><term>Blotting, Southern</term><term>Copy number</term><term>DNA Probes</term><term>DNA, Mitochondrial (genetics)</term><term>Fishes (genetics)</term><term>Gene frequency</term><term>Genotype</term><term>Marine environment</term><term>Mitochondrial DNA</term><term>Molecular Sequence Data</term><term>Phylogeny</term><term>Polymorphism, Genetic (genetics)</term><term>Restriction fragment length polymorphism</term><term>Tandemly repeated sequence</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>DNA, Mitochondrial</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>DNA Probes</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Fishes</term><term>Polymorphism, Genetic</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Base Sequence</term><term>Blotting, Southern</term><term>Genotype</term><term>Molecular Sequence Data</term><term>Phylogeny</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Acipenser transmontanus</term><term>Milieu marin</term><term>Séquence répétée en tandem</term><term>DNA mitochondrial</term><term>Nombre copie</term><term>Polymorphisme longueur fragment restriction</term><term>Fréquence génique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Milieu marin</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Southern blot analysis was used to quantify the extent of mtDNA D-loop length variation in two populations of white sturgeon, Acipenser transmontanus. Over 42% of individuals were heteroplasmic for up to six different mtDNA length variants attributable to varying copy numbers of an 82-bp repeat sequence. Chi-square analyses revealed that the frequencies of length genotypes and the incidence of heteroplasmy were significantly different between Fraser and Columbia River sturgeon populations but not between restriction site haplotypes. Heteroplasmic fish have, on average, higher copy number than homoplasmic fish</div></front></TEI><double idat="0016-6731:1992:Brown J:mitochondrial:dna:length"><INIST><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Mitochondrial DNA length variation and heteroplasmy in populations of white sturgeon (Acipenser transmontanus)</title><author><name sortKey="Brown, J R" sort="Brown, J R" uniqKey="Brown J" first="J. R." last="Brown">J. R. Brown</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Simon Fraser univ., inst. molecular biology biochemistry, dep. biological sci.</s1><s2>Burnaby BC V5A 1S6</s2><s3>CAN</s3></inist:fA14><country>Canada</country><wicri:noRegion>Burnaby BC V5A 1S6</wicri:noRegion></affiliation></author><author><name sortKey="Beckenbach, A T" sort="Beckenbach, A T" uniqKey="Beckenbach A" first="A. T." last="Beckenbach">A. T. Beckenbach</name></author><author><name sortKey="Smith, M J" sort="Smith, M J" uniqKey="Smith M" first="M. J." last="Smith">M. J. Smith</name></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">92-0562550</idno><date when="1992">1992</date><idno type="stanalyst">PASCAL 92-0562550 INIST</idno><idno type="RBID">Pascal:92-0562550</idno><idno type="wicri:Area/PascalFrancis/Corpus">000576</idno><idno type="wicri:Area/PascalFrancis/Curation">000536</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000564</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000564</idno><idno type="wicri:doubleKey">0016-6731:1992:Brown J:mitochondrial:dna:length</idno><idno type="wicri:Area/Main/Merge">001E02</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Mitochondrial DNA length variation and heteroplasmy in populations of white sturgeon (Acipenser transmontanus)</title><author><name sortKey="Brown, J R" sort="Brown, J R" uniqKey="Brown J" first="J. R." last="Brown">J. R. Brown</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Simon Fraser univ., inst. molecular biology biochemistry, dep. biological sci.</s1><s2>Burnaby BC V5A 1S6</s2><s3>CAN</s3></inist:fA14><country>Canada</country><wicri:noRegion>Burnaby BC V5A 1S6</wicri:noRegion></affiliation></author><author><name sortKey="Beckenbach, A T" sort="Beckenbach, A T" uniqKey="Beckenbach A" first="A. T." last="Beckenbach">A. T. Beckenbach</name></author><author><name sortKey="Smith, M J" sort="Smith, M J" uniqKey="Smith M" first="M. J." last="Smith">M. J. Smith</name></author></analytic><series><title level="j" type="main">Genetics</title><title level="j" type="abbreviated">Genetics</title><idno type="ISSN">0016-6731</idno><imprint><date when="1992">1992</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Genetics</title><title level="j" type="abbreviated">Genetics</title><idno type="ISSN">0016-6731</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser transmontanus</term><term>Copy number</term><term>Gene frequency</term><term>Marine environment</term><term>Mitochondrial DNA</term><term>Restriction fragment length polymorphism</term><term>Tandemly repeated sequence</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Acipenser transmontanus</term><term>Milieu marin</term><term>Séquence répétée en tandem</term><term>DNA mitochondrial</term><term>Nombre copie</term><term>Polymorphisme longueur fragment restriction</term><term>Fréquence génique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Milieu marin</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Southern blot analysis was used to quantify the extent of mtDNA D-loop length variation in two populations of white sturgeon, Acipenser transmontanus. Over 42% of individuals were heteroplasmic for up to six different mtDNA length variants attributable to varying copy numbers of an 82-bp repeat sequence. Chi-square analyses revealed that the frequencies of length genotypes and the incidence of heteroplasmy were significantly different between Fraser and Columbia River sturgeon populations but not between restriction site haplotypes. Heteroplasmic fish have, on average, higher copy number than homoplasmic fish</div></front></TEI></INIST><PubMed><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Mitochondrial DNA length variation and heteroplasmy in populations of white sturgeon (Acipenser transmontanus).</title><author><name sortKey="Brown, J R" sort="Brown, J R" uniqKey="Brown J" first="J R" last="Brown">J R Brown</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia</wicri:regionArea><wicri:noRegion>British Columbia</wicri:noRegion></affiliation></author><author><name sortKey="Beckenbach, A T" sort="Beckenbach, A T" uniqKey="Beckenbach A" first="A T" last="Beckenbach">A T Beckenbach</name></author><author><name sortKey="Smith, M J" sort="Smith, M J" uniqKey="Smith M" first="M J" last="Smith">M J Smith</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1992">1992</date><idno type="RBID">pubmed:1398055</idno><idno type="pmid">1398055</idno><idno type="wicri:Area/PubMed/Corpus">000726</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000726</idno><idno type="wicri:Area/PubMed/Curation">000726</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000726</idno><idno type="wicri:Area/PubMed/Checkpoint">000726</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000726</idno><idno type="wicri:Area/Ncbi/Merge">000103</idno><idno type="wicri:Area/Ncbi/Curation">000103</idno><idno type="wicri:Area/Ncbi/Checkpoint">000103</idno><idno type="wicri:doubleKey">0016-6731:1992:Brown J:mitochondrial:dna:length</idno><idno type="wicri:Area/Main/Merge">001D49</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Mitochondrial DNA length variation and heteroplasmy in populations of white sturgeon (Acipenser transmontanus).</title><author><name sortKey="Brown, J R" sort="Brown, J R" uniqKey="Brown J" first="J R" last="Brown">J R Brown</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia</wicri:regionArea><wicri:noRegion>British Columbia</wicri:noRegion></affiliation></author><author><name sortKey="Beckenbach, A T" sort="Beckenbach, A T" uniqKey="Beckenbach A" first="A T" last="Beckenbach">A T Beckenbach</name></author><author><name sortKey="Smith, M J" sort="Smith, M J" uniqKey="Smith M" first="M J" last="Smith">M J Smith</name></author></analytic><series><title level="j">Genetics</title><idno type="ISSN">0016-6731</idno><imprint><date when="1992" type="published">1992</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Base Sequence</term><term>Blotting, Southern</term><term>DNA Probes</term><term>DNA, Mitochondrial (genetics)</term><term>Fishes (genetics)</term><term>Genotype</term><term>Molecular Sequence Data</term><term>Phylogeny</term><term>Polymorphism, Genetic (genetics)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>DNA, Mitochondrial</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>DNA Probes</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Fishes</term><term>Polymorphism, Genetic</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Base Sequence</term><term>Blotting, Southern</term><term>Genotype</term><term>Molecular Sequence Data</term><term>Phylogeny</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Southern blot analysis was used to quantify the extent of mtDNA D-loop length variation in two populations of white sturgeon, Acipenser transmontanus. Over 42% of individuals were heteroplasmic for up to six different mtDNA length variants attributable to varying copy numbers of an 82-bp repeat sequence. Chi-square analyses revealed that the frequencies of length genotypes and the incidence of heteroplasmy were significantly different between Fraser and Columbia River sturgeon populations but not between restriction site haplotypes. Heteroplasmic fish have, on average, higher copy number than homoplasmic fish. Forty-five of 101 homoplasmic individuals carry only a single copy of the repeat, while none of the 73 heteroplasmic fish has the single repeat as the predominant variant. On the basis of differences in frequency distributions of copy number within and between fish, we suggest that (1) heteroplasmy is maintained by high recurrent mutation of multiple copy genomes, favoring increased copy number and (2) the mutation pressure toward higher copy number heteroplasmy is partially offset by selection to reduced genome size and segregation to the homoplasmic condition.</div></front></TEI></PubMed></double></record>Pour manipuler ce document sous Unix (Dilib)
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