دورية أكاديمية
Chromosomal mapping of ribosomal clusters and telomeric sequences (TTAGG)n in nine species of lobsters (Crustacea, Decapoda)
| العنوان: | Chromosomal mapping of ribosomal clusters and telomeric sequences (TTAGG)n in nine species of lobsters (Crustacea, Decapoda) |
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| المؤلفون: | S. Salvadori, F. Deidda, L. Carugati, R. Melis, E. Costa, M. Sibiriu, E. Coluccia |
| المصدر: | The European Zoological Journal, Vol 90, Iss 1, Pp 443-453 (2023) |
| بيانات النشر: | Taylor & Francis Group, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Zoology |
| مصطلحات موضوعية: | Decapoda, FISH, (TTAGG)n, interstitial telomeric sequences (ITSs), 28S rDNA, 5S rDNA, Zoology, QL1-991 |
| الوصف: | AbstractLobsters are ubiquitous, economically important decapod crustaceans with apparently conflicting evolutionary relationships. Here, we describe the chromosomal location of the major (45S rDNA) and minor (5S rDNA) ribosomal gene families in four species of Astacidea and five of Achelata, using two-color FISH. The major ribosomal family is located in 4–16 sites per diploid chromosome set, with Nephrops norvegicus (Nephropidae) showing the highest number described so far in Decapoda. The 5S rDNA is located in two sites in eight species; only in the crayfish Procambarus clarkii the 5S FISH signals were detected in four sites together with additional weaker signals. Furthermore, in N. norvegicus the minor ribosomal genes are syntenic with one major ribosomal cluster. Moreover, we located by two-color FISH the pentanucleotide (TTAGG)n telomeric repeat in the Nephropidae studied, showing the occurrence of a colocalization with 45S ribosomal sequences in Homarus gammarus. The comparison of chromosomal locations of repetitive sequences in Mediterranean, Atlantic, and South African lobster species as well as in marine and freshwater ones provides information on chromosomal evolution and cytotaxonomy of Decapoda. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 24750263 2475-0263 |
| Relation: | https://doaj.org/toc/2475-0263 |
| DOI: | 10.1080/24750263.2023.2217188 |
| URL الوصول: | https://doaj.org/article/00b083432b9d4d4c9c194cd6085ef132 |
| رقم الأكسشن: | edsdoj.00b083432b9d4d4c9c194cd6085ef132 |
| قاعدة البيانات: | Directory of Open Access Journals |
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Full Text Finder | تدمد: | 24750263 |
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| DOI: | 10.1080/24750263.2023.2217188 |