Spatial pattern of low-temperature photoinhibition on thalli of Antarctic lichen species Umbilicaria antarctica visualized by a novel approach

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F03%3A00008875" target="_blank" >RIV/00216224:14310/03:00008875 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Spatial pattern of low-temperature photoinhibition on thalli of Antarctic lichen species Umbilicaria antarctica visualized by a novel approach
Original language description
Sensitivity of lichens to photoinhibition is believed to be more pronounced under full hydration and low temperature. In this study, we exposed Umbilicaria antarctica, a foliose Antarctic lichen species, to 30 min photoinhibitory treatment (1500 micromols m-2 s-1) under 5 degC. The extent of photoinhibition and rate of recovery were monitored as time courses of chlorophyll fluorescence parameters: Fv/Fm , PSII yield, and quenching coefficients. To visualize distribution of response of the parameters tophotoinhibitory treatment over lichen thallus, we used a FuorCam (PSI, Czech Republic) device and imaging software. The novel approach enabled to distinguish a 0.1 square mm spots (pixels) over the thallus and relate the above parameters to each of them.Physiologically-active thallus zones forming irregular star-like shapes located close to thallus center showed high sensitivity to photoinhibition but also fast recovery. Less physiologically-active marginal parts of thallus were less af
Czech name
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Czech description
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Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Book of Abstracts. 10th Congress of the European Society for Photobiology
ISBN
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ISSN
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e-ISSN
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Number of pages
1
Pages from-to
108
Publisher name
European Society for Photobiology
Place of publication
Vienna (Austria)
Event location
Vienna (Austria)
Event date
Jan 1, 2003
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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