Phytohormone profiles in leaves and traps of three Genlisea (Lentibulariaceae) species

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F25%3A00638728" target="_blank" >RIV/61389030:_____/25:00638728 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/25:00638728 RIV/61989592:15310/25:73634378

Výsledek na webu

<a href="https://doi.org/10.1016/j.aquabot.2025.103920" target="_blank" >https://doi.org/10.1016/j.aquabot.2025.103920</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquabot.2025.103920" target="_blank" >10.1016/j.aquabot.2025.103920</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phytohormone profiles in leaves and traps of three Genlisea (Lentibulariaceae) species

Popis výsledku v původním jazyce

Genlisea (Lentibulariaceae) is a tropical genus of rootless wetland carnivorous plants. The belowground leaf (rhizophyll) is a Y-shaped organ which functions as an 'eel trap' for soil microorganisms. We compared phytohormonal profiles (cytokinins, auxins, ABA) in green photosynthetic leaves, upper trap segments (including the vesicle for prey digestion) and lower branched trap segments functioning as trap entrances, in three Genlisea species from a pot culture. Relatively low contents of total cytokinins (35-1017 nmol kg- 1, dry weight) and active cytokinins (7-213 nmol kg- 1) occurred in the species. Those in upper trap segments, which fulfill demanding physiological functions, usually exceeded several times those in branched trap segments or green leaves. Generally, auxin contents were enormously variable across the species. Auxin contents (both IAA and total contents) in both organ types in G. hispidula and G. uncinata exceeded those in the G. lobata x flexuosa hybrid by one-three orders of magnitude. The highest free IAA content was usually in green leaves followed by upper and branched trap segments. However, the ABA content, as a hormonal criterion for plant dormancy, was consistently very low in all organs and species, indicating no growth limitation by this inhibitory hormone. The comparison of these hormone profiles with those from the literature in the phylogenetically related sister genus Utricularia (six aquatic species) has indicated that the very low cytokinin contents in Genlisea organs could reflect their very low growth rate as compared to rapidly growing aquatic Utricularia species.

Název v anglickém jazyce

Phytohormone profiles in leaves and traps of three Genlisea (Lentibulariaceae) species

Popis výsledku anglicky

Genlisea (Lentibulariaceae) is a tropical genus of rootless wetland carnivorous plants. The belowground leaf (rhizophyll) is a Y-shaped organ which functions as an 'eel trap' for soil microorganisms. We compared phytohormonal profiles (cytokinins, auxins, ABA) in green photosynthetic leaves, upper trap segments (including the vesicle for prey digestion) and lower branched trap segments functioning as trap entrances, in three Genlisea species from a pot culture. Relatively low contents of total cytokinins (35-1017 nmol kg- 1, dry weight) and active cytokinins (7-213 nmol kg- 1) occurred in the species. Those in upper trap segments, which fulfill demanding physiological functions, usually exceeded several times those in branched trap segments or green leaves. Generally, auxin contents were enormously variable across the species. Auxin contents (both IAA and total contents) in both organ types in G. hispidula and G. uncinata exceeded those in the G. lobata x flexuosa hybrid by one-three orders of magnitude. The highest free IAA content was usually in green leaves followed by upper and branched trap segments. However, the ABA content, as a hormonal criterion for plant dormancy, was consistently very low in all organs and species, indicating no growth limitation by this inhibitory hormone. The comparison of these hormone profiles with those from the literature in the phylogenetically related sister genus Utricularia (six aquatic species) has indicated that the very low cytokinin contents in Genlisea organs could reflect their very low growth rate as compared to rapidly growing aquatic Utricularia species.

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

2025

Kód důvěrnosti údajů

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

Název periodika

Aquatic Botany

ISSN

0304-3770

e-ISSN

1879-1522

Svazek periodika

201

Číslo periodika v rámci svazku

NOV 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

103920

Kód UT WoS článku

001525448500001

EID výsledku v databázi Scopus

2-s2.0-105009241352