SEEDSTICK Controls Arabidopsis Fruit Size by Regulating Cytokinin Levels and FRUITFULL

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F20%3A00524174" target="_blank" >RIV/61389030:_____/20:00524174 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/20:73604569
Result on the web
<a href="http://doi.org/10.1016/j.celrep.2020.01.101" target="_blank" >http://doi.org/10.1016/j.celrep.2020.01.101</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.celrep.2020.01.101" target="_blank" >10.1016/j.celrep.2020.01.101</a>

Result language
angličtina
Original language name
SEEDSTICK Controls Arabidopsis Fruit Size by Regulating Cytokinin Levels and FRUITFULL
Original language description
Upon fertilization, the ovary increases in size and undergoes a complex developmental process to become a fruit. We show that cytokinins (CKs), which are required to determine ovary size before fertilization, have to be degraded to facilitate fruit growth. The expression of CKX7, which encodes a cytosolic CK-degrading enzyme, is directly positively regulated post-fertilization by the MADS-box transcription factor STK. Similar to stk, two ckx7 mutants possess shorter fruits than wild type. Quantification of CKs reveals that stk and ckx7 mutants have high CK levels, which negatively control cell expansion during fruit development, compromising fruit growth. Overexpression of CKX7 partially complements the stk fruit phenotype, confirming a role for CK degradation in fruit development. Finally, we show that STK is required for the expression of FUL, which is essential for valve elongation. Overall, we provide insights into the link between CKs and molecular pathways that control fruit growth.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10608 - Biochemistry and molecular biology

Project
<a href="/en/project/GA18-07563S" target="_blank" >GA18-07563S: Functional and stuctural study on plant enzymes involved in cytokinin degradation and aldehyde detoxification</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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