DNA Transposon Expansion is Associated with Genome Size Increase inMudminnows
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081707%3A_____%2F21%3A00604776" target="_blank" >RIV/68081707:_____/21:00604776 - isvavai.cz</a>
Result on the web
<a href="https://academic.oup.com/gbe/article/13/10/evab228/6380143?login=true" target="_blank" >https://academic.oup.com/gbe/article/13/10/evab228/6380143?login=true</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/gbe/evab228" target="_blank" >10.1093/gbe/evab228</a>
Alternative languages
Result language
angličtina
Original language name
DNA Transposon Expansion is Associated with Genome Size Increase inMudminnows
Original language description
Genome sizes of eukaryotic organisms vary substantially, with whole-genome duplications (WGD) and transposable element expansion acting as main drivers for rapid genome size increase. The two North American mudminnows, Umbra limi and Umbra pygmaea, feature genomes about twice the size of their sister lineage Esocidae (e.g., pikes and pickerels). However, it is unknown whether all Umbra species share this genome expansion andwhich causal mechanisms drive this expansion. Using flow cytometry, we find that the genome of the European mudminnowis expanded similarly to both North American species, ranging between 4.5 and 5.4 pg per diploid nucleus. Observed blocks of interstitially located telomeric repeats in U. limi suggest frequent Robertsonian rearrangements in its history. Comparative analyses of transcriptome and genome assemblies show that the genome expansion in Umbra is driven by the expansion of DNA transposon and unclassified repeat sequences without WGD. Furthermore, we find a substantial ongoing expansion of repeat sequences in the Alaska blackfish Dallia pectoralis, the closest relative to the family Umbridae, which might mark the beginning of a similar genome expansion. Our study suggests that the genome expansion in mudminnows, driven mainly by transposon expansion, but not WGD, occurred before the separation into the American and European lineage.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10603 - Genetics and heredity (medical genetics to be 3)
Result continuities
Project
<a href="/en/project/GA19-03442S" target="_blank" >GA19-03442S: Ribosomal RNA genes - travellers in time and the genomes</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Genome Biology and Evolution
ISSN
1759-6653
e-ISSN
1759-6653
Volume of the periodical
13
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
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UT code for WoS article
000769470300011
EID of the result in the Scopus database
2-s2.0-85121403872