Vztahy minerální výživy u vodní masožravé rostliny Utricularia australis a její investice do masožravosti

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F08%3A00313304" target="_blank" >RIV/67985939:_____/08:00313304 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Mineral nutrient relations in the aquatic carnivorous plant Utricularia australis and its investment in carnivory

Popis výsledku v původním jazyce

The carnivorous plant Utricularia australis was sampled from 30 locations in the Czech Republic and its mineral nutrient economy was correlated with its carnivorous habit. Relationships were sought between mineral nutrient levels in the ambient water together with prey quantity captured in traps and N, P, K, Na, Ca, and Mg contents of shoot tissues, and the proportion of total plant biomass in traps (investment in carnivory). Even at very oligotrophic sites with low prey capture rates, shoot N and P content was always well above the level below which growth limitation could occur. Plants recycled at least 57 % of their N and 81 % of their P from senescent shoots, although they lost all of the K, Na, Ca, and Mg from senescing tissues. The investment incarnivory (23-61 %) positively correlated with CO2 concentration, but negatively with shoot N content. Thus, shoot N content acts as a key endogenous factor regulating investment in trap biomass through a negative feedback mechanism.

Název v anglickém jazyce

Mineral nutrient relations in the aquatic carnivorous plant Utricularia australis and its investment in carnivory

Popis výsledku anglicky

The carnivorous plant Utricularia australis was sampled from 30 locations in the Czech Republic and its mineral nutrient economy was correlated with its carnivorous habit. Relationships were sought between mineral nutrient levels in the ambient water together with prey quantity captured in traps and N, P, K, Na, Ca, and Mg contents of shoot tissues, and the proportion of total plant biomass in traps (investment in carnivory). Even at very oligotrophic sites with low prey capture rates, shoot N and P content was always well above the level below which growth limitation could occur. Plants recycled at least 57 % of their N and 81 % of their P from senescent shoots, although they lost all of the K, Na, Ca, and Mg from senescing tissues. The investment incarnivory (23-61 %) positively correlated with CO2 concentration, but negatively with shoot N content. Thus, shoot N content acts as a key endogenous factor regulating investment in trap biomass through a negative feedback mechanism.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Fundamental and Applied Limnology / Archiv für Hydrobiologie

ISSN

1863-9135

e-ISSN

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Svazek periodika

171

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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