Evolutionary trends in animal ribosomal DNA loci: introduction to a new online database

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F18%3A50014325" target="_blank" >RIV/62690094:18470/18:50014325 - isvavai.cz</a>

Alternative codes found

RIV/68081707:_____/18:00488374

Result on the web

<a href="http://dx.doi.org/10.1007/s00412-017-0651-8" target="_blank" >http://dx.doi.org/10.1007/s00412-017-0651-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00412-017-0651-8" target="_blank" >10.1007/s00412-017-0651-8</a>

Result language

angličtina

Original language name

Evolutionary trends in animal ribosomal DNA loci: introduction to a new online database

Original language description

Ribosomal DNA (rDNA) loci encoding 5S and 45S (18S-5.8S-28S) rRNAs are important components of eukaryotic chromosomes. Here, we set up the animal rDNA database containing cytogenetic information about these loci in 1343 animal species (264 families) collected from 542 publications. The data are based on in situ hybridisation studies (both radioactive and fluorescent) carried out in major groups of vertebrates (fish, reptiles, amphibians, birds, and mammals) and invertebrates (mostly insects and mollusks). The database is accessible online at www.animalrdnadatabase.com. The median number of 45S and 5S sites was close to two per diploid chromosome set for both rDNAs despite large variation (1–74 for 5S and 1–54 for 45S sites). No significant correlation between the number of 5S and 45S rDNA loci was observed, suggesting that their distribution and amplification across the chromosomes follow independent evolutionary trajectories. Each group, irrespective of taxonomic classification, contained rDNA sites at any chromosome location. However, the distal and pericentromeric positions were the most prevalent (&gt; 75% karyotypes) for 45S loci, while the position of 5S loci was more variable. We also examined potential relationships between molecular attributes of rDNA (homogenisation and expression) and cytogenetic parameters such as rDNA positions, chromosome number, and morphology.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10608 - Biochemistry and molecular biology

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chromosoma

ISSN

0009-5915

e-ISSN

—

Volume of the periodical

127

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

141-150

UT code for WoS article

000425529800012

EID of the result in the Scopus database

2-s2.0-85035746635