Leaf ontogeny modulates epinasty through shifts in hormone dynamics during waterlogging in tomato
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F24%3A00586172" target="_blank" >RIV/61389030:_____/24:00586172 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/24:73628867
Result on the web
<a href="https://doi.org/10.1093/jxb/erad432" target="_blank" >https://doi.org/10.1093/jxb/erad432</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/jxb/erad432" target="_blank" >10.1093/jxb/erad432</a>
Alternative languages
Result language
angličtina
Original language name
Leaf ontogeny modulates epinasty through shifts in hormone dynamics during waterlogging in tomato
Original language description
Waterlogging leads to hypoxic conditions in the root zone that subsequently cause systemic adaptive responses in the shoot, including leaf epinasty. Waterlogging-induced epinasty in tomato has long been ascribed to the coordinated action of ethylene and auxins. However, other hormonal signals have largely been neglected, despite evidence of their importance in leaf posture control. To cover a large group of growth regulators, we performed a tissue-specific and time-dependent hormonomics analysis. This revealed that multiple hormones are differentially affected throughout a 48 h waterlogging treatment, and that leaf age determines hormone homeostasis and modulates their changes during waterlogging. In addition, we distinguished early hormonal signals that contribute to fast responses to oxygen deprivation from those that potentially sustain the waterlogging response. We found that abscisic acid (ABA) levels peak in petioles within the first 12 h of the treatment, while its precursors only increase much later, suggesting that ABA transport is altered. At the same time, cytokinins (CKs) and their derivatives drastically decline during waterlogging in leaves of all ages. This drop in CKs possibly releases the inhibition of ethylene- and auxin-mediated cell elongation to establish epinastic bending. Auxins themselves rise substantially in the petiole of mature leaves, but mostly after 48 h of root hypoxia. Based on our hormone profiling, we propose that ethylene and ABA might act synergistically as an early signal to induce epinasty, while the balance of indole-3-acetic acid and CKs in the petiole ultimately regulates differential growth.
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
10611 - Plant sciences, botany
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Experimental Botany
ISSN
0022-0957
e-ISSN
1460-2431
Volume of the periodical
75
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
1081-1097
UT code for WoS article
001105757800001
EID of the result in the Scopus database
2-s2.0-85184492934