Hormonal responses of rice to organ-targeted cold stress
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F24%3A00599708" target="_blank" >RIV/61389030:_____/24:00599708 - isvavai.cz</a>
Alternative codes found
RIV/68081707:_____/24:00599708 RIV/61989592:15310/24:73627857 RIV/62156489:43210/24:43924916
Result on the web
<a href="https://doi.org/10.1016/j.envexpbot.2024.105739" target="_blank" >https://doi.org/10.1016/j.envexpbot.2024.105739</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.envexpbot.2024.105739" target="_blank" >10.1016/j.envexpbot.2024.105739</a>
Alternative languages
Result language
angličtina
Original language name
Hormonal responses of rice to organ-targeted cold stress
Original language description
Rice is a plant species sensitive to cold stress, which renders seriously its cultivation. Responses to cold stress (5 degrees C, 24 hours) in whole plants, or targeted to rice leaves or roots were followed at the hormonome, transcriptome, proteome, and sugar levels, to find organ-specific responses and processes affected by cold acclimation. Targeted stresses caused proteomic changes mainly in the unexposed organs. An increase in abscisic acid (ABA) was accompanied by a decrease in jasmonic acid (JA) (in roots and non-stressed leaves) and vice versa (JA increased in stressed leaves). Both hormones promote the cold tolerance of plants. In this way, JA could indirectly reduce negative effects of cold on photosynthesis in leaves, while ABA dominates in roots (stimulation of protective substances, especially dehydrins, control of water regime). The decrease in cytokinins trans-zeatin and dihydrozeatin in crowns correlated with stress-induced growth suppression. Leaf-targeted cold stress impaired photosynthesis and decreased sugar levels, diminishing their transport, which correlated with an increase in salicylic acid, which is a signal for sugar unloading from phloem into roots. Root-targeted stress suppressed cytokinin biosynthesis and upward transport, and promoted sugar accumulation in leaves. Acclimation per se activated the transcriptome and proteome response to cold ABA, JA and ethylene were upregulated, moderately suppressing plant growth. Pre-acclimated plants showed less profound hormonal changes than directly stressed plants, positively affecting levels of growth-related phytohormones in the unexposed organs (cytokinins in roots of leaf-stressed plants, auxins in leaves of root-stressed plants).
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
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
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental and Experimental Botany
ISSN
0098-8472
e-ISSN
1873-7307
Volume of the periodical
222
Issue of the periodical within the volume
JUN
Country of publishing house
GB - UNITED KINGDOM
Number of pages
18
Pages from-to
105739
UT code for WoS article
001230374600001
EID of the result in the Scopus database
2-s2.0-85190241963