Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp.
In our study, we present responses of Antarctic strain of filamentous alga Zygnema sp. collected at James Ross Island (Antarctica) to application of variuos uncouplers of pri-mary photosynthetic processes. We exposed the alga to different concentrations of nigericin, 3-(3,4-dichlorophenyl)-1,1-dimet...
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Online Access: | http://dx.doi.org/10.5817/cpr2016-1-10 https://journals.muni.cz/CPR/article/viewFile/12890/11228 |
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crmasarykunivpr:10.5817/cpr2016-1-10 2024-05-19T07:28:53+00:00 Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp. Kakkou, Christos Barták, Miloš Hájek, Josef Skácelová, Kateřina Hazdrová, Jana 2016 http://dx.doi.org/10.5817/cpr2016-1-10 https://journals.muni.cz/CPR/article/viewFile/12890/11228 unknown Masaryk University Press http://creativecommons.org/licenses/by-nc-nd/4.0 Czech Polar Reports volume 6, issue 1, page 96-107 ISSN 1805-0697 1805-0689 journal-article 2016 crmasarykunivpr https://doi.org/10.5817/cpr2016-1-10 2024-04-30T06:41:27Z In our study, we present responses of Antarctic strain of filamentous alga Zygnema sp. collected at James Ross Island (Antarctica) to application of variuos uncouplers of pri-mary photosynthetic processes. We exposed the alga to different concentrations of nigericin, 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU), dithiothreitol (DTT), methyl viologen (MV) and hydrogen peroxide (H2O2) in order to test stability of photosystem II, involvement of non-photochemical quenching, and PS II functioning under combination of moderate light with particular uncoupler. Oxidative stress tolerance was tested by the combination of hydrogen peroxide (H2O2) and moderate light. Time courses of FV/FM, FPSII, NPQ and qF0 were investigated and particular effects of the above-specified chem-icals discussed. Moderate doses of uncouplers allowing partial recovery, and the doses causing full inhibition of PS II were specified. Article in Journal/Newspaper Antarc* Antarctic Antarctica James Ross Island Ross Island Munipress - Masaryk University Press Czech Polar Reports 6 1 96 107 |
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Munipress - Masaryk University Press |
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crmasarykunivpr |
language |
unknown |
description |
In our study, we present responses of Antarctic strain of filamentous alga Zygnema sp. collected at James Ross Island (Antarctica) to application of variuos uncouplers of pri-mary photosynthetic processes. We exposed the alga to different concentrations of nigericin, 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU), dithiothreitol (DTT), methyl viologen (MV) and hydrogen peroxide (H2O2) in order to test stability of photosystem II, involvement of non-photochemical quenching, and PS II functioning under combination of moderate light with particular uncoupler. Oxidative stress tolerance was tested by the combination of hydrogen peroxide (H2O2) and moderate light. Time courses of FV/FM, FPSII, NPQ and qF0 were investigated and particular effects of the above-specified chem-icals discussed. Moderate doses of uncouplers allowing partial recovery, and the doses causing full inhibition of PS II were specified. |
format |
Article in Journal/Newspaper |
author |
Kakkou, Christos Barták, Miloš Hájek, Josef Skácelová, Kateřina Hazdrová, Jana |
spellingShingle |
Kakkou, Christos Barták, Miloš Hájek, Josef Skácelová, Kateřina Hazdrová, Jana Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp. |
author_facet |
Kakkou, Christos Barták, Miloš Hájek, Josef Skácelová, Kateřina Hazdrová, Jana |
author_sort |
Kakkou, Christos |
title |
Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp. |
title_short |
Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp. |
title_full |
Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp. |
title_fullStr |
Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp. |
title_full_unstemmed |
Effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of Antarctic alga Zygnema sp. |
title_sort |
effects of controlled oxidative stress and uncouplers on primary photosynthetic processes in vegetative cells of antarctic alga zygnema sp. |
publisher |
Masaryk University Press |
publishDate |
2016 |
url |
http://dx.doi.org/10.5817/cpr2016-1-10 https://journals.muni.cz/CPR/article/viewFile/12890/11228 |
genre |
Antarc* Antarctic Antarctica James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctica James Ross Island Ross Island |
op_source |
Czech Polar Reports volume 6, issue 1, page 96-107 ISSN 1805-0697 1805-0689 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0 |
op_doi |
https://doi.org/10.5817/cpr2016-1-10 |
container_title |
Czech Polar Reports |
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6 |
container_issue |
1 |
container_start_page |
96 |
op_container_end_page |
107 |
_version_ |
1799476409168560128 |