EsturgeonV1, Ncbi, Merge, bibRecord, 000225

Comparison of karyotypes of Acipenser oxyrinchus and A. sturio by chromosome banding and fluorescent in situ hybridization.

Identifieur interne : 000225 ( Ncbi/Merge ); précédent : 000224; suivant : 000226

Comparison of karyotypes of Acipenser oxyrinchus and A. sturio by chromosome banding and fluorescent in situ hybridization.

Auteurs : Francesco Fontana [Italie] ; Massimo Lanfredi ; Frank Kirschbaum ; Manuel A. Garrido-Ramos ; Francisca Robles ; Anna Forlani ; Leonardo Congiu

Source :

Genetica [ 0016-6707 ] ; 2008.

RBID : pubmed:17624498

English descriptors

KwdEn :
- Animals, Chromosome Banding, Chromosomes (genetics), DNA, Satellite, Digoxigenin (metabolism), Fishes (genetics), In Situ Hybridization, Fluorescence (methods), Karyotyping, Metaphase, Propidium (metabolism), RNA, Ribosomal, 5S, Species Specificity, Telomere.
MESH :
- chemical , metabolism : Digoxigenin, Propidium.
- chemical : DNA, Satellite, RNA, Ribosomal, 5S.
- genetics : Chromosomes, Fishes.
- methods : In Situ Hybridization, Fluorescence.
- Animals, Chromosome Banding, Karyotyping, Metaphase, Species Specificity, Telomere.

Abstract

A highly debated problem in Acipenseridae taxonomy is whether Acipenser oxyrinchus (North American Atlantic sturgeon) and A. sturio (European Atlantic sturgeon) are true species: a detailed comparison of their karyotypes could provide relevant information. Here we describe for the first time the karyotype of A. oxyrinchus (2n = 121 +/- 3), and its features, among which the constitutive heterochromatin, revealed by C-banding technique, the distribution of telomeric regions, and the 5S rRNA genes, detected by FISH. The results reveal that A. oxyrinchus and A. sturio karyotypes and features are quite similar. Moreover, comparing the results obtained through hybridization by FISH with HindIII and PstI satellite DNA in these and in other sturgeon species, no hybridization signals are detected in A. sturio and A. oxyrinchus, while A. stellatus and A. gueldenstaedtii show hybridization. Thus A. sturio and A. oxyrinchus appear very similar from a cytogenetic point of view: these and molecular data repeatedly point out that A. sturio and A. oxyrinchus represent a sister clade in comparison to all other sturgeon species up to now studied.

DOI: 10.1007/s10709-007-9171-4
PubMed: 17624498

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pubmed:17624498

Le document en format XML

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<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. francesco.fontana@unife.it</nlm:affiliation>
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<term>Fishes (genetics)</term>
<term>In Situ Hybridization, Fluorescence (methods)</term>
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<term>Propidium (metabolism)</term>
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<term>Chromosome Banding</term>
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<front><div type="abstract" xml:lang="en">A highly debated problem in Acipenseridae taxonomy is whether Acipenser oxyrinchus (North American Atlantic sturgeon) and A. sturio (European Atlantic sturgeon) are true species: a detailed comparison of their karyotypes could provide relevant information. Here we describe for the first time the karyotype of A. oxyrinchus (2n = 121 +/- 3), and its features, among which the constitutive heterochromatin, revealed by C-banding technique, the distribution of telomeric regions, and the 5S rRNA genes, detected by FISH. The results reveal that A. oxyrinchus and A. sturio karyotypes and features are quite similar. Moreover, comparing the results obtained through hybridization by FISH with HindIII and PstI satellite DNA in these and in other sturgeon species, no hybridization signals are detected in A. sturio and A. oxyrinchus, while A. stellatus and A. gueldenstaedtii show hybridization. Thus A. sturio and A. oxyrinchus appear very similar from a cytogenetic point of view: these and molecular data repeatedly point out that A. sturio and A. oxyrinchus represent a sister clade in comparison to all other sturgeon species up to now studied.</div>
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<Abstract><AbstractText>A highly debated problem in Acipenseridae taxonomy is whether Acipenser oxyrinchus (North American Atlantic sturgeon) and A. sturio (European Atlantic sturgeon) are true species: a detailed comparison of their karyotypes could provide relevant information. Here we describe for the first time the karyotype of A. oxyrinchus (2n = 121 +/- 3), and its features, among which the constitutive heterochromatin, revealed by C-banding technique, the distribution of telomeric regions, and the 5S rRNA genes, detected by FISH. The results reveal that A. oxyrinchus and A. sturio karyotypes and features are quite similar. Moreover, comparing the results obtained through hybridization by FISH with HindIII and PstI satellite DNA in these and in other sturgeon species, no hybridization signals are detected in A. sturio and A. oxyrinchus, while A. stellatus and A. gueldenstaedtii show hybridization. Thus A. sturio and A. oxyrinchus appear very similar from a cytogenetic point of view: these and molecular data repeatedly point out that A. sturio and A. oxyrinchus represent a sister clade in comparison to all other sturgeon species up to now studied.</AbstractText>
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Comparison of karyotypes of Acipenser oxyrinchus and A. sturio by chromosome banding and fluorescent in situ hybridization.

Comparison of karyotypes of Acipenser oxyrinchus and A. sturio by chromosome banding and fluorescent in situ hybridization.

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki