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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F13%3A00423793%21RIV14-GA0-67179843
rdf:type
skos:Concept n16:Vysledek
dcterms:description
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. 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.
dcterms:title
Response of epidermal blue-green fluorescence emission from Barley leaves to uv radiation stress Response of epidermal blue-green fluorescence emission from Barley leaves to uv radiation stress
skos:prefLabel
Response of epidermal blue-green fluorescence emission from Barley leaves to uv radiation stress Response of epidermal blue-green fluorescence emission from Barley leaves to uv radiation stress
skos:notation
RIV/67179843:_____/13:00423793!RIV14-GA0-67179843
n16:predkladatel
n20:ico%3A67179843
n3:aktivita
n14:P n14:I
n3:aktivity
I, P(ED1.1.00/02.0073), P(GA522/09/0468)
n3:dodaniDat
n5:2014
n3:domaciTvurceVysledku
n18:7131038 n18:3731596 n18:3543544
n3:druhVysledku
n11:D
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
102642
n3:idVysledku
RIV/67179843:_____/13:00423793
n3:jazykVysledku
n7:eng
n3:klicovaSlova
blue-green fluorescence; UV-B and UV-A radiation; barley; plant stress
n3:klicoveSlovo
n6:UV-B%20and%20UV-A%20radiation n6:plant%20stress n6:barley n6:blue-green%20fluorescence
n3:kontrolniKodProRIV
[A533306A9986]
n3:mistoKonaniAkce
Brno
n3:mistoVydani
Brno
n3:nazevZdroje
Global Change and Resilience: From Impacts to Responses : Proceedings of the 3rd annual Global Change and Resilience Conference
n3:obor
n4:EH
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n13:GA522%2F09%2F0468 n13:ED1.1.00%2F02.0073
n3:rokUplatneniVysledku
n5:2013
n3:tvurceVysledku
Nezval, J. Štroch, Michal Karlický, Václav Špunda, Vladimír
n3:typAkce
n15:EUR
n3:zahajeniAkce
2013-05-22+02:00
s:numberOfPages
5
n10:hasPublisher
Global change research centre, Academy of Sciences of the Czech Republic, v. v. i
n19:isbn
978-80-904351-8-6