Karyotype characterization of the lake sturgeon, Acipenser fulvescens (Rafinesque 1817) by chromosome banding and fluorescent in situ hybridization.
Identifieur interne : 001053 ( Main/Merge ); précédent : 001052; suivant : 001054Karyotype characterization of the lake sturgeon, Acipenser fulvescens (Rafinesque 1817) by chromosome banding and fluorescent in situ hybridization.
Auteurs : Francesco Fontana [Italie] ; Ronald M. Bruch ; Fred P. Binkowski ; Massimo Lanfredi ; Milvia Chicca ; Nicola Beltrami ; Leonardo CongiuSource :
- Genome [ 0831-2796 ] ; 2004.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : DNA.
- chemical , genetics : DNA.
- genetics : Fishes, Telomere.
- Animals, Base Composition, Chromosome Banding, Female, Fluorescent Dyes, In Situ Hybridization, Fluorescence, Indoles, Karyotyping, Minisatellite Repeats, Nucleolus Organizer Region, Silver, Staining and Labeling.
Abstract
A karyotype analysis using several staining techniques was carried out on the North American lake sturgeon, Acipenser fulvescens. The chromosome number was found to be 2n = 262 +/- 6. A representative karyotype of 264 chromosomes was composed of 134 meta- and submetacentrics, 70 telo- and acrocentrics, and 60 microchromosomes. The constitutive heterochromatin, revealed by C banding, was localized in various positions on several chromosomes, including microchromosomes. The signals of fluorescent in situ hybridization (FISH) with a HindIII satellite DNA probe were visible as centromeric heterochromatin blocks on 48 chromosomes. The telomeric repeat (TTAGGG)n detected by FISH was localized at both ends of all chromosomes and two chromosomes were entirely marked. Fluorescent staining with GC-specific chromomycin A3 showed recognizable fluorescent regions, whereas a more uniform base composition was revealed by the AT-specific 4',6-diamidino-2-phenylindole (DAPI). After silver staining, the active nucleolar organizer regions (NORs) were detected on 12 chromosomes. FISH with the 5S probe showed four signals on four small chromosomes. Our data suggest that A. fulvescens is a tetraploid species.
DOI: 10.1139/g04-028
PubMed: 15284879
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Bruch</name></author><author><name sortKey="Binkowski, Fred P" sort="Binkowski, Fred P" uniqKey="Binkowski F" first="Fred P" last="Binkowski">Fred P. Binkowski</name></author><author><name sortKey="Lanfredi, Massimo" sort="Lanfredi, Massimo" uniqKey="Lanfredi M" first="Massimo" last="Lanfredi">Massimo Lanfredi</name></author><author><name sortKey="Chicca, Milvia" sort="Chicca, Milvia" uniqKey="Chicca M" first="Milvia" last="Chicca">Milvia Chicca</name></author><author><name sortKey="Beltrami, Nicola" sort="Beltrami, Nicola" uniqKey="Beltrami N" first="Nicola" last="Beltrami">Nicola Beltrami</name></author><author><name sortKey="Congiu, Leonardo" sort="Congiu, Leonardo" uniqKey="Congiu L" first="Leonardo" last="Congiu">Leonardo Congiu</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2004">2004</date><idno type="RBID">pubmed:15284879</idno><idno type="pmid">15284879</idno><idno type="doi">10.1139/g04-028</idno><idno type="wicri:Area/PubMed/Corpus">000559</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000559</idno><idno type="wicri:Area/PubMed/Curation">000559</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000559</idno><idno type="wicri:Area/PubMed/Checkpoint">000559</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000559</idno><idno type="wicri:Area/Ncbi/Merge">000124</idno><idno type="wicri:Area/Ncbi/Curation">000124</idno><idno type="wicri:Area/Ncbi/Checkpoint">000124</idno><idno type="wicri:doubleKey">0831-2796:2004:Fontana F:karyotype:characterization:of</idno><idno type="wicri:Area/Main/Merge">001053</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Karyotype characterization of the lake sturgeon, Acipenser fulvescens (Rafinesque 1817) by chromosome banding and fluorescent in situ hybridization.</title><author><name sortKey="Fontana, Francesco" sort="Fontana, Francesco" uniqKey="Fontana F" first="Francesco" last="Fontana">Francesco Fontana</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biology, University of Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy. fon@dns.unife.it</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Department of Biology, University of Ferrara, Via L. Borsari 46, 44100 Ferrara</wicri:regionArea><wicri:noRegion>44100 Ferrara</wicri:noRegion></affiliation></author><author><name sortKey="Bruch, Ronald M" sort="Bruch, Ronald M" uniqKey="Bruch R" first="Ronald M" last="Bruch">Ronald M. Bruch</name></author><author><name sortKey="Binkowski, Fred P" sort="Binkowski, Fred P" uniqKey="Binkowski F" first="Fred P" last="Binkowski">Fred P. Binkowski</name></author><author><name sortKey="Lanfredi, Massimo" sort="Lanfredi, Massimo" uniqKey="Lanfredi M" first="Massimo" last="Lanfredi">Massimo Lanfredi</name></author><author><name sortKey="Chicca, Milvia" sort="Chicca, Milvia" uniqKey="Chicca M" first="Milvia" last="Chicca">Milvia Chicca</name></author><author><name sortKey="Beltrami, Nicola" sort="Beltrami, Nicola" uniqKey="Beltrami N" first="Nicola" last="Beltrami">Nicola Beltrami</name></author><author><name sortKey="Congiu, Leonardo" sort="Congiu, Leonardo" uniqKey="Congiu L" first="Leonardo" last="Congiu">Leonardo Congiu</name></author></analytic><series><title level="j">Genome</title><idno type="ISSN">0831-2796</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>Base Composition</term><term>Chromosome Banding</term><term>DNA (chemistry)</term><term>DNA (genetics)</term><term>Female</term><term>Fishes (genetics)</term><term>Fluorescent Dyes</term><term>In Situ Hybridization, Fluorescence</term><term>Indoles</term><term>Karyotyping</term><term>Minisatellite Repeats</term><term>Nucleolus Organizer Region</term><term>Silver</term><term>Staining and Labeling</term><term>Telomere (genetics)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>DNA</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>DNA</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Fishes</term><term>Telomere</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Base Composition</term><term>Chromosome Banding</term><term>Female</term><term>Fluorescent Dyes</term><term>In Situ Hybridization, Fluorescence</term><term>Indoles</term><term>Karyotyping</term><term>Minisatellite Repeats</term><term>Nucleolus Organizer Region</term><term>Silver</term><term>Staining and Labeling</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A karyotype analysis using several staining techniques was carried out on the North American lake sturgeon, Acipenser fulvescens. The chromosome number was found to be 2n = 262 +/- 6. A representative karyotype of 264 chromosomes was composed of 134 meta- and submetacentrics, 70 telo- and acrocentrics, and 60 microchromosomes. The constitutive heterochromatin, revealed by C banding, was localized in various positions on several chromosomes, including microchromosomes. The signals of fluorescent in situ hybridization (FISH) with a HindIII satellite DNA probe were visible as centromeric heterochromatin blocks on 48 chromosomes. The telomeric repeat (TTAGGG)n detected by FISH was localized at both ends of all chromosomes and two chromosomes were entirely marked. Fluorescent staining with GC-specific chromomycin A3 showed recognizable fluorescent regions, whereas a more uniform base composition was revealed by the AT-specific 4',6-diamidino-2-phenylindole (DAPI). After silver staining, the active nucleolar organizer regions (NORs) were detected on 12 chromosomes. FISH with the 5S probe showed four signals on four small chromosomes. Our data suggest that A. fulvescens is a tetraploid species.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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