Restoring cytonuclear harmony: Distinct strategies in Arabidopsis auto- and allopolyploids
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F25%3A00638903" target="_blank" >RIV/61389030:_____/25:00638903 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/25:00142572
Result on the web
<a href="https://doi.org/10.1111/tpj.70451" target="_blank" >https://doi.org/10.1111/tpj.70451</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/tpj.70451" target="_blank" >10.1111/tpj.70451</a>
Alternative languages
Result language
angličtina
Original language name
Restoring cytonuclear harmony: Distinct strategies in Arabidopsis auto- and allopolyploids
Original language description
Plants rely on tight coordination between nuclear, mitochondrial, and chloroplast genomes to form essential multi-enzyme cytonuclear complexes. Whole-genome duplication (WGD) doubles the nuclear genome, potentially disrupting cytonuclear stoichiometry unless organellar genomes respond accordingly. Targeted analyses of chloroplasts and mitochondria enabled us to dissect the extent and mechanisms of adjustments in both organelles immediately after WGD and across generations in Arabidopsis auto- and allopolyploids. We observed a substantial overcompensation of organellar genome copies in both organelles in early-generation autotetraploids primarily through multiplication of DNA copies within organelles rather than increasing the number of organelles. Despite higher DNA content, mitochondria maintained their volume, and chloroplasts were even smaller. In successive generations, chloroplast DNA copy numbers continued to rise, whereas mitochondrial DNA copies declined. Gene expression patterns also differed between chloroplasts and mitochondria and between auto- and allopolyploids. In autopolyploids, immediate transcriptional changes were minimal, but by the fourth generation after WGD, nuclear genes involved in mitochondria-nuclear complexes were downregulated. In allopolyploids, transcriptional changes appeared immediately in the first generation (chloroplast genes were upregulated and mitochondrial genes were downregulated). Our findings demonstrate that cytonuclear balance is restored through dynamic, organelle-specific, and polyploid-type-specific mechanisms. These insights advance our understanding of the evolution of polyploid genomes.
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
10608 - Biochemistry and molecular biology
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Plant Journal
ISSN
0960-7412
e-ISSN
1365-313X
Volume of the periodical
123
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
18
Pages from-to
e70451
UT code for WoS article
001559233900001
EID of the result in the Scopus database
2-s2.0-105014595202