Reflectance continuum removal spectral index tracking the xanthophyll cycle photoprotective reactions in Norway spruce needles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F12%3AA13016NN" target="_blank" >RIV/61988987:17310/12:A13016NN - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67179843:_____/12:00385088

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Reflectance continuum removal spectral index tracking the xanthophyll cycle photoprotective reactions in Norway spruce needles

Popis výsledku v původním jazyce

The experiment tested the ability of the spectral index called ?area under curve normalised to maximal band depth? (ANMB) to track dynamic changes in the xanthophyll cycle of Norway spruce needles. Spruce seedlings were gradually acclimated to differentPPFDs and air temperature regimes. A significant decline in the chlorophylls to carotenoids ratio and the increase of the amount of xanthophyll cycle pigments indicated a higher need for carotenoid-mediated photoprotection in spruce acclimated to high PPFD. Similarly, the photochemical reflectance index (PRI) changed from positive to negative values after changing light conditions from low to high intensity. Systematic responses of PRI to DEPS were, however, observed only during high temperature treatments and after the exposition of needles to high irradiance. The ANMB index computed from needle reflectance was able to track dynamic changes in DEPS without any influence induced by changing the content of leaf photosynthetic pigments.

Název v anglickém jazyce

Reflectance continuum removal spectral index tracking the xanthophyll cycle photoprotective reactions in Norway spruce needles

Popis výsledku anglicky

The experiment tested the ability of the spectral index called ?area under curve normalised to maximal band depth? (ANMB) to track dynamic changes in the xanthophyll cycle of Norway spruce needles. Spruce seedlings were gradually acclimated to differentPPFDs and air temperature regimes. A significant decline in the chlorophylls to carotenoids ratio and the increase of the amount of xanthophyll cycle pigments indicated a higher need for carotenoid-mediated photoprotection in spruce acclimated to high PPFD. Similarly, the photochemical reflectance index (PRI) changed from positive to negative values after changing light conditions from low to high intensity. Systematic responses of PRI to DEPS were, however, observed only during high temperature treatments and after the exposition of needles to high irradiance. The ANMB index computed from needle reflectance was able to track dynamic changes in DEPS without any influence induced by changing the content of leaf photosynthetic pigments.

Druh

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

CEP obor

BO - Biofyzika

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

FUNCT PLANT BIOL

ISSN

1445-4408

e-ISSN

—

Svazek periodika

39

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

AU - Austrálie

Počet stran výsledku

12

Strana od-do

987-998

Kód UT WoS článku

000311751300004

EID výsledku v databázi Scopus

—