Chromosomal location and evolution of a satellite DNA family in seven sturgeon species.
Identifieur interne : 001474 ( Main/Merge ); précédent : 001473; suivant : 001475Chromosomal location and evolution of a satellite DNA family in seven sturgeon species.
Auteurs : M. Lanfredi [Italie] ; L. Congiu ; M A Garrido-Ramos ; R. De La Herrán ; M. Leis ; M. Chicca ; R. Rossi ; J. Tagliavini ; C. Ruiz Rej N ; M. Ruiz Rej N ; F. FontanaSource :
- Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology [ 0967-3849 ] ; 2001.
English descriptors
- KwdEn :
- MESH :
- chemical , genetics : DNA, Satellite.
- genetics : Fishes.
- Animals, Centromere, Chromosome Mapping, Evolution, Molecular, In Situ Hybridization, Fluorescence, Karyotyping, Metaphase, Phylogeny, Ploidies, Species Specificity.
Abstract
The Hind III satellite DNA family, isolated from the Acipenser naccarii genome, was used as a probe for fluorescent in-situ hybridization (FISH) on the karyotype of seven sturgeon species, six belonging to the genus Acipenser and one to Huso. All species except one (A. sturio) exhibit from 8 to 80 chromosome hybridization signals, mainly localized at the pericentromeric regions. Eight chromosomes with weak hybridization signals are present in H. huso and A. ruthenus, which are characterized by a karyotype with about 120 chromosomes. The species with 240-260 chromosomes, A. transmontanus, A. naccarii, A. gueldenstaedtii, and A. baerii, show from 50 to 80 signals, prevalently localized around centromeres. Moreover, A. transmontanus and A. gueldenstaedtii show from 4 to 8 chromosomes with a double signal. The phylogenetic and evolutionary relationships among sturgeon species are discussed on the basis of number and morphology of signal-bearing chromosomes and on the localization of signals.
PubMed: 11272791
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Fontana</name></author></analytic><series><title level="j">Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology</title><idno type="ISSN">0967-3849</idno><imprint><date when="2001" type="published">2001</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Centromere</term><term>Chromosome Mapping</term><term>DNA, Satellite (genetics)</term><term>Evolution, Molecular</term><term>Fishes (genetics)</term><term>In Situ Hybridization, Fluorescence</term><term>Karyotyping</term><term>Metaphase</term><term>Phylogeny</term><term>Ploidies</term><term>Species Specificity</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>DNA, Satellite</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Fishes</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Centromere</term><term>Chromosome Mapping</term><term>Evolution, Molecular</term><term>In Situ Hybridization, Fluorescence</term><term>Karyotyping</term><term>Metaphase</term><term>Phylogeny</term><term>Ploidies</term><term>Species Specificity</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The Hind III satellite DNA family, isolated from the Acipenser naccarii genome, was used as a probe for fluorescent in-situ hybridization (FISH) on the karyotype of seven sturgeon species, six belonging to the genus Acipenser and one to Huso. All species except one (A. sturio) exhibit from 8 to 80 chromosome hybridization signals, mainly localized at the pericentromeric regions. Eight chromosomes with weak hybridization signals are present in H. huso and A. ruthenus, which are characterized by a karyotype with about 120 chromosomes. The species with 240-260 chromosomes, A. transmontanus, A. naccarii, A. gueldenstaedtii, and A. baerii, show from 50 to 80 signals, prevalently localized around centromeres. Moreover, A. transmontanus and A. gueldenstaedtii show from 4 to 8 chromosomes with a double signal. The phylogenetic and evolutionary relationships among sturgeon species are discussed on the basis of number and morphology of signal-bearing chromosomes and on the localization of signals.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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