Hormonal profiles in dormant turions of 22 aquatic plant species: do they reflect functional or taxonomic traits?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F24%3A00598109" target="_blank" >RIV/61389030:_____/24:00598109 - isvavai.cz</a>
Alternative codes found
RIV/67985939:_____/24:00598109 RIV/61989592:15310/24:73627319
Result on the web
<a href="https://doi.org/10.1093/aob/mcae059" target="_blank" >https://doi.org/10.1093/aob/mcae059</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/aob/mcae059" target="_blank" >10.1093/aob/mcae059</a>
Alternative languages
Result language
angličtina
Original language name
Hormonal profiles in dormant turions of 22 aquatic plant species: do they reflect functional or taxonomic traits?
Original language description
Contents of cytokinin (CK), auxin metabolites and abscisic acid (ABA) as main growth and development regulators were compared in innately dormant autumnal turions of 22 aquatic plant species of different functional ecological or taxonomic groups with those in non-dormant winter apices in three aquatic species and with those in spring turions of four species after their overwintering. The hormones were analyzed in miniature turion samples using ultraperformance liquid chromatography coupled with triple quadrupole mass spectrometry. In innately dormant turions, the total contents of each of the four main CK types, biologically active forms and total CKs differed by two to three orders of magnitude across 22 species, the proportion of active CK forms was 0.18–67 %. Similarly, the content of four auxin forms was extremely variable and the IAA proportion as the active form was 0.014–99 %. The ABA content varied from almost zero to 54 µmol kg−1 dry weight, and it usually significantly decreased after overwintering. Of all functional traits studied, hormone profiles depended most on the place of turion sprouting (surface vs. bottom) and we suggest that this trait is crucial for turion ecophysiology. The key role of ABA in regulating turion dormancy was confirmed. However, the highly variable pattern of the ABA content in innately dormant and in overwintered turions indicates that the hormonal mechanism regulating the innate dormancy and its breaking in turions is not uniform within aquatic 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
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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
Annals of Botany
ISSN
0305-7364
e-ISSN
1095-8290
Volume of the periodical
134
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
219-232
UT code for WoS article
001215006300001
EID of the result in the Scopus database
2-s2.0-85198657399