Effect of dehydration on spectral reflectance and photosynthetic efficiency in Umbilicaria arctica and U. hyperborea

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00082594" target="_blank" >RIV/00216224:14310/15:00082594 - isvavai.cz</a>

Výsledek na webu

<a href="http://link.springer.com/article/10.1007/s10535-015-0506-1" target="_blank" >http://link.springer.com/article/10.1007/s10535-015-0506-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10535-015-0506-1" target="_blank" >10.1007/s10535-015-0506-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of dehydration on spectral reflectance and photosynthetic efficiency in Umbilicaria arctica and U. hyperborea

Popis výsledku v původním jazyce

In many polar and alpine ecosystems, lichens of genus Umbilicaria represent dominant species forming community structure. Photosynthetic and spectral properties of the lichens may change rapidly according to an actual hydration status of their thalli. Inthis study, we investigated responses of photochemical reflectance index (PRI), normalized difference vegetation index (NDVI), effective quantum yield of photosynthetic efficiency of photosystem (PS) II (PhiPSII), and several photosynthetic parameters derived from fast induction kinetics of chlorophyll fluorescence (OJIP) to controlled dehydration. We used U. arctica and U. hyperborea collected close to Nuuk, Greenland. In both the species, PRI showed a curvilinear increase with dehydration, i.e., a decreasing water potential (WP). The increase was apparent within WP range of 0 to minus 10 MPa. The PRI increase was less pronounced in U. arctica than in U. hyperborea.

Název v anglickém jazyce

Effect of dehydration on spectral reflectance and photosynthetic efficiency in Umbilicaria arctica and U. hyperborea

Popis výsledku anglicky

In many polar and alpine ecosystems, lichens of genus Umbilicaria represent dominant species forming community structure. Photosynthetic and spectral properties of the lichens may change rapidly according to an actual hydration status of their thalli. Inthis study, we investigated responses of photochemical reflectance index (PRI), normalized difference vegetation index (NDVI), effective quantum yield of photosynthetic efficiency of photosystem (PS) II (PhiPSII), and several photosynthetic parameters derived from fast induction kinetics of chlorophyll fluorescence (OJIP) to controlled dehydration. We used U. arctica and U. hyperborea collected close to Nuuk, Greenland. In both the species, PRI showed a curvilinear increase with dehydration, i.e., a decreasing water potential (WP). The increase was apparent within WP range of 0 to minus 10 MPa. The PRI increase was less pronounced in U. arctica than in U. hyperborea.

Druh

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

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Biologia Plantarum

ISSN

0006-3134

e-ISSN

—

Svazek periodika

59

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

357-365

Kód UT WoS článku

000353889400019

EID výsledku v databázi Scopus

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