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Název:
Response of epidermal blue-green fluorescence emission from Barley leaves to uv radiation stress
Autoři: Karlický, Václav ; Nezval, J. ; Štroch, Michal ; Špunda, Vladimír
Typ dokumentu: Příspěvky z konference
Konference/Akce: Global Change and Resilience, Brno (CZ), 2013-05-22 / 2013-05-24
Rok: 2013
Jazyk: eng
Abstrakt: Blue-green fl uorescence (BGF) is emitted by plant tissue when excited by UV radiation. Th e emission spectrum of BGF varies with plant species and is aff ected by the physiological status of the plant. BGF has been attributed mainly to cell wall-bound ferulic acid, although a contribution from fl avonoids and other simple phenols has also been suggested. Th e BGF signal is of interest due to its potential application in the remote sensing of plant stress: such techniques use ratios of blue and green to chlorophyll red and far-red fl uorescence emission intensities to estimate plant stress. In this work we investigated the response of BGF to UV-radiation stress and characterized changes in the shape of BGF emission spectra. We found these changes to be more signifi cant during the acclimation to UV-B radiation in comparison with UV-A or high irradiance of PAR. Furthermore, the spectral changes in BGF emission were due to a decline of fl uorescence at a wavelength of 435 nm compared with bands around 455 nm and 520 nm. In view of this, we have tried to distinguish individual fl uorescent components using more detailed fl uorescence analysis and to explain the causes of these spectral changes.
Klíčová slova: barley; blue-green fluorescence; plant stress; UV-B and UV-A radiation
Číslo projektu: ED1.1.00/02.0073, GA522/09/0468 (CEP)
Poskytovatel projektu: GA MŠk, GA ČR
Zdrojový dokument: Global Change and Resilience: From Impacts to Responses : Proceedings of the 3rd annual Global Change and Resilience Conference, ISBN 978-80-904351-8-6
Instituce: Ústav výzkumu globální změny AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0229958
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-170351
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav výzkumu globální změny
Konferenční materiály > Příspěvky z konference
Autoři: Karlický, Václav ; Nezval, J. ; Štroch, Michal ; Špunda, Vladimír
Typ dokumentu: Příspěvky z konference
Konference/Akce: Global Change and Resilience, Brno (CZ), 2013-05-22 / 2013-05-24
Rok: 2013
Jazyk: eng
Abstrakt: Blue-green fl uorescence (BGF) is emitted by plant tissue when excited by UV radiation. Th e emission spectrum of BGF varies with plant species and is aff ected by the physiological status of the plant. BGF has been attributed mainly to cell wall-bound ferulic acid, although a contribution from fl avonoids and other simple phenols has also been suggested. Th e BGF signal is of interest due to its potential application in the remote sensing of plant stress: such techniques use ratios of blue and green to chlorophyll red and far-red fl uorescence emission intensities to estimate plant stress. In this work we investigated the response of BGF to UV-radiation stress and characterized changes in the shape of BGF emission spectra. We found these changes to be more signifi cant during the acclimation to UV-B radiation in comparison with UV-A or high irradiance of PAR. Furthermore, the spectral changes in BGF emission were due to a decline of fl uorescence at a wavelength of 435 nm compared with bands around 455 nm and 520 nm. In view of this, we have tried to distinguish individual fl uorescent components using more detailed fl uorescence analysis and to explain the causes of these spectral changes.
Klíčová slova: barley; blue-green fluorescence; plant stress; UV-B and UV-A radiation
Číslo projektu: ED1.1.00/02.0073, GA522/09/0468 (CEP)
Poskytovatel projektu: GA MŠk, GA ČR
Zdrojový dokument: Global Change and Resilience: From Impacts to Responses : Proceedings of the 3rd annual Global Change and Resilience Conference, ISBN 978-80-904351-8-6
Instituce: Ústav výzkumu globální změny AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0229958
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-170351
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav výzkumu globální změny
Konferenční materiály > Příspěvky z konference
Záznam vytvořen dne 2014-01-30, naposledy upraven 2021-11-24.