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Dominance of transposable element-related satDNAs results in great complexity of "satDNA library" and invokes the extension towards "repetitive DNA library".
Tunjic-Cvitanic, Monika; García-Souto, Daniel; Pasantes, Juan J; Satovic-Vuksic, Eva.
Afiliación
  • Tunjic-Cvitanic M; Division of Molecular Biology, Ruder Boskovic Institute, 10000 Zagreb, Croatia.
  • García-Souto D; Genomes and Disease, Centre for Research in Molecular Medicine and Chronic Diseases (CIMUS), Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain.
  • Pasantes JJ; Department of Zoology, Genetics and Physical Anthropology, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain.
  • Satovic-Vuksic E; Centro de Investigación Mariña, Dpto de Bioquímica, Xenética e Inmunoloxía, Universidade de Vigo, 36310 Vigo, Spain.
Mar Life Sci Technol ; 6(2): 236-251, 2024 May.
Article en En | MEDLINE | ID: mdl-38827134
ABSTRACT
Research on bivalves is fast-growing, including genome-wide analyses and genome sequencing. Several characteristics qualify oysters as a valuable model to explore repetitive DNA sequences and their genome organization. Here we characterize the satellitomes of five species in the family Ostreidae (Crassostrea angulata, C. virginica, C. hongkongensis, C. ariakensis, Ostrea edulis), revealing a substantial number of satellite DNAs (satDNAs) per genome (ranging between 33 and 61) and peculiarities in the composition of their satellitomes. Numerous satDNAs were either associated to or derived from transposable elements, displaying a scarcity of transposable element-unrelated satDNAs in these genomes. Due to the non-conventional satellitome constitution and dominance of Helitron-associated satDNAs, comparative satellitomics demanded more in-depth analyses than standardly employed. Comparative analyses (including C. gigas, the first bivalve species with a defined satellitome) revealed that 13 satDNAs occur in all six oyster genomes, with Cg170/HindIII satDNA being the most abundant in all of them. Evaluating the "satDNA library model" highlighted the necessity to adjust this term when studying tandem repeat evolution in organisms with such satellitomes. When repetitive sequences with potential variation in the organizational form and repeat-type affiliation are examined across related species, the introduction of the terms "TE library" and "repetitive DNA library" becomes essential. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-024-00218-0.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Mar Life Sci Technol Año: 2024 Tipo del documento: Article País de afiliación: Croacia Pais de publicación: Singapur
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Mar Life Sci Technol Año: 2024 Tipo del documento: Article País de afiliación: Croacia Pais de publicación: Singapur