Photoinhibition of photosynthesis in Antarctic lichen Usnea antarctica. I. Light intensity- and light duration-dependent changes in functioning of photosystem II

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F12%3A00061543" target="_blank" >RIV/00216224:14310/12:00061543 - isvavai.cz</a>

Result on the web

<a href="http://www.sci.muni.cz/CPR/3cislo/Ocenasova-web.pdf" target="_blank" >http://www.sci.muni.cz/CPR/3cislo/Ocenasova-web.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Photoinhibition of photosynthesis in Antarctic lichen Usnea antarctica. I. Light intensity- and light duration-dependent changes in functioning of photosystem II

Original language description

The paper deals with the differences in sensitivity of Antarctic lichen to photoinhibition. Thalli of Usnea antarctica were collected at the James Ross Island, Antarctica (57 deg 52 57 W, 63 deg 48 02 S) and transferred in dry state to the Czech Republic. After rewetting in a laboratory, they were exposed to 2 high light treatments: short-term (30 min), and long-term (6 h). In short-term treatment, the sample were exposed to 1000 and 2000 micromol m-2 s-1 of photosynthetically active radiation (PAR). Inlong-term experiment, PAR of 300, 600, and 1000 micromol m-2 s-1 were used. Photosynthetic efficiency of U.antarctica thalli was monitored by chlorophyll fluorescence parameters, potential (FV/FM) and actual (Phi PSII) quantum yield of photochemical processes in photosystem II in particular. In short-term treatments, the F0, FV and FM signals, as well as the values of FV/FM, and Phi PSII showed light-induced decrease, however substantial recovery after consequent 30 min. in dark.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

<a href="/en/project/LM2010009" target="_blank" >LM2010009: CzechPolar ? Czech Polar Stations: Construction and management</a><br>

Continuities

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

Publication year

2012

Confidentiality

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

Name of the periodical

Czech Polar Reports

ISSN

1805-0689

e-ISSN

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Volume of the periodical

2

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

42-51

UT code for WoS article

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EID of the result in the Scopus database

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