Hormonal profiles in dormant turions of 22 aquatic plant species: do they reflect functional or taxonomic traits?

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/67985939:_____/24:00598109 RIV/61989592:15310/24:73627319

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Hormonal profiles in dormant turions of 22 aquatic plant species: do they reflect functional or taxonomic traits?

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Hormonal profiles in dormant turions of 22 aquatic plant species: do they reflect functional or taxonomic traits?

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Annals of Botany

ISSN

0305-7364

e-ISSN

1095-8290

Svazek periodika

134

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

219-232

Kód UT WoS článku

001215006300001

EID výsledku v databázi Scopus

2-s2.0-85198657399