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Cross-species chromosome painting and repetitive DNA mapping illuminate the karyotype evolution in true crocodiles (Crocodylidae)
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SYSNO ASEP 0574834 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Cross-species chromosome painting and repetitive DNA mapping illuminate the karyotype evolution in true crocodiles (Crocodylidae) Tvůrce(i) Sales-Oliveira, V. (BR)
Altmanová, Marie (UZFG-Y) ORCID
Gvoždík, Václav (UBO-W) RID, SAI, ORCID
Kretschmer, R. (BR)
Ezaz, T. (AU)
Liehr, T. (DE)
Padutsch, N. (DE)
Badjedjea, G. (CD)
Utsonomia, R. (BR)
Tanomtong, A. (TH)
Cioffi, M. (BR)Zdroj.dok. Chromosoma. - : Springer - ISSN 0009-5915
Roč. 132, č. 4 (2023), s. 289-303Poč.str. 15 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova FISH ; Crocodylia ; Cytogenomics ; Chromosome ; Molecular cytogenetics ; WCP Vědní obor RIV EB - Genetika a molekulární biologie Obor OECD Zoology CEP GA23-07331S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UZFG-Y - RVO:67985904 ; UBO-W - RVO:68081766 UT WOS 001034210900001 EID SCOPUS 85165694088 DOI 10.1007/s00412-023-00806-6 Anotace Crocodilians have maintained very similar karyotype structures and diploid chromosome numbers for around 100 million years, with only minor variations in collinearity. Why this karyotype structure has largely stayed unaltered for so long is unclear. In this study, we analyzed the karyotypes of six species belonging to the genera Crocodylus and Osteolaemus (Crocodylidae, true crocodiles), among which the Congolian endemic O. osborni was included and investigated. We utilized various techniques (differential staining, fluorescence in situ hybridization with repetitive DNA and rDNA probes, whole chromosome painting, and comparative genomic hybridization) to better understand how crocodile chromosomes evolved. We studied representatives of three of the four main diploid chromosome numbers found in crocodiles (2n = 30/32/38). Our data provided new information about the species studied, including the identification of four major chromosomal rearrangements that occurred during the karyotype diversification process in crocodiles. These changes led to the current diploid chromosome numbers of 2n = 30 (fusion) and 2n = 38 (fissions), derived from the ancestral state of 2n = 32. The conserved cytogenetic tendency in crocodilians, where extant species keep near-ancestral state, contrasts with the more dynamic karyotype evolution seen in other major reptile groups. Pracoviště Ústav živočišné fyziologie a genetiky Kontakt Jana Zásmětová, knihovna@iapg.cas.cz, Tel.: 315 639 554 Rok sběru 2024 Elektronická adresa https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=22784988069
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