Divergent subgenome evolution in the allotetraploid frog Xenopus calcaratus
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F23%3A00564284" target="_blank" >RIV/68081766:_____/23:00564284 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/23:10451251 RIV/00027162:_____/23:N0000002
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0378111922007946?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378111922007946?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.gene.2022.146974" target="_blank" >10.1016/j.gene.2022.146974</a>
Alternative languages
Result language
angličtina
Original language name
Divergent subgenome evolution in the allotetraploid frog Xenopus calcaratus
Original language description
Allopolyploid genomes are divided into compartments called subgenomes that are derived from lower ploidy ancestors. In African clawed frogs of the subgenus Xenopus (genus Xenopus), allotetraploid species have two subgenomes (L and S) with morphologically distinct homoeologous chromosomes. In allotetraploid species of the sister subgenus Silurana, independently evolved subgenomes also exist, but their cytogenetics has not been investigated in detail. We used a diverse suite of cytogenetic and molecular FISH techniques on an allotetraploid species in Silurana—Xenopus calcaratus—to explore evolutionary dynamics of chromosome morphology and rearrangements. We find that the subgenomes of X. calcaratus have distinctive characteristics, with a more conserved a-subgenome resembling the closely related genome of the diploid species X. tropicalis, and a more rapidly evolving b-subgenome having more pronounced changes in chromosome structure, including diverged heterochromatic blocks, repetitive sequences, and deletion of a nucleolar secondary constriction. Based on these cytogenetic differences, we propose a chromosome nomenclature for X. calcaratus that may apply to other allotetraploids in subgenus Silurana, depending on as yet unresolved details of their evolutionary origins. These findings highlight the potential for large-scale asymmetry in subgenome evolution following allopolyploidization.
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
10613 - Zoology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Gene
ISSN
0378-1119
e-ISSN
1879-0038
Volume of the periodical
851
Issue of the periodical within the volume
1
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
146974
UT code for WoS article
000883056700006
EID of the result in the Scopus database
2-s2.0-85140903121