Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication )
Algae show different extent of resistance to heavy metals. In this study, the resistance of green filamentous alga Zygnema sp. (strain EEL201, originally collected at James Ross Island, Antarctica) was tested by chlorophyll fluorescence parameters. The alga was taken from the stock culture cultivate...
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ftmasarykunivojs:oai:ojs.journals.muni.cz:article/12896 2023-05-15T13:46:41+02:00 Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication ) Varela Hernandez, Higinio Pablo 2016-07-01 application/pdf http://journals.muni.cz/CPR/article/view/12896 eng eng Masaryk Univerzity http://journals.muni.cz/CPR/article/view/12896/11309 http://journals.muni.cz/CPR/article/view/12896 Copyright (c) 2020 Czech Polar Reports https://creativecommons.org/licenses/by-nc-nd/4.0 CC-BY-NC-ND Czech Polar Reports; Vol 6 No 2 (2016); 180-185 Czech Polar Reports; Vol. 6 No. 2 (2016); 180-185 1805-0697 1805-0689 cadmium zinc James Ross Island photosystem II chlorophyll fluorescence info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftmasarykunivojs 2022-06-26T10:16:39Z Algae show different extent of resistance to heavy metals. In this study, the resistance of green filamentous alga Zygnema sp. (strain EEL201, originally collected at James Ross Island, Antarctica) was tested by chlorophyll fluorescence parameters. The alga was taken from the stock culture cultivated on agar, innoculated to liquid medium and allowed to develop biomass large enough for exposition experiments. Heavy metal treatments consisted of addition of Cd and Zn so that effective concentration was 66 mM. Response of primary photosynthetic processes to Cd, Zn addition was assessed by the exposition time-dependent decrease in potential quantum yield (FV/FM) photosystem II (PS II) and relative fluorescence decline ratio (RFd). Cd- and Zn-treated Zygnema sp. exhibited similar extent of decline of the two parameters associated with inhibition of primary processes of photosynthesis. Negative changes to PS II, however, did not bring full inhibition of PS II functioning since FV/FM was about 0.450 after 120 min. exposition. The results might indicate a potential of Antarctic Zygnema in the studies focused on resistance to heavy metals and phytoremediation technologies. Article in Journal/Newspaper Antarc* Antarctic Antarctica James Ross Island Ross Island Masaryk University Journals Antarctic Ross Island |
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Masaryk University Journals |
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language |
English |
topic |
cadmium zinc James Ross Island photosystem II chlorophyll fluorescence |
spellingShingle |
cadmium zinc James Ross Island photosystem II chlorophyll fluorescence Varela Hernandez, Higinio Pablo Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication ) |
topic_facet |
cadmium zinc James Ross Island photosystem II chlorophyll fluorescence |
description |
Algae show different extent of resistance to heavy metals. In this study, the resistance of green filamentous alga Zygnema sp. (strain EEL201, originally collected at James Ross Island, Antarctica) was tested by chlorophyll fluorescence parameters. The alga was taken from the stock culture cultivated on agar, innoculated to liquid medium and allowed to develop biomass large enough for exposition experiments. Heavy metal treatments consisted of addition of Cd and Zn so that effective concentration was 66 mM. Response of primary photosynthetic processes to Cd, Zn addition was assessed by the exposition time-dependent decrease in potential quantum yield (FV/FM) photosystem II (PS II) and relative fluorescence decline ratio (RFd). Cd- and Zn-treated Zygnema sp. exhibited similar extent of decline of the two parameters associated with inhibition of primary processes of photosynthesis. Negative changes to PS II, however, did not bring full inhibition of PS II functioning since FV/FM was about 0.450 after 120 min. exposition. The results might indicate a potential of Antarctic Zygnema in the studies focused on resistance to heavy metals and phytoremediation technologies. |
format |
Article in Journal/Newspaper |
author |
Varela Hernandez, Higinio Pablo |
author_facet |
Varela Hernandez, Higinio Pablo |
author_sort |
Varela Hernandez, Higinio Pablo |
title |
Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication ) |
title_short |
Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication ) |
title_full |
Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication ) |
title_fullStr |
Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication ) |
title_full_unstemmed |
Effects of heavy metals ions on primary photosynthetic processes in Antarctic filamentous alga Zygnema sp. ( Short Communication ) |
title_sort |
effects of heavy metals ions on primary photosynthetic processes in antarctic filamentous alga zygnema sp. ( short communication ) |
publisher |
Masaryk Univerzity |
publishDate |
2016 |
url |
http://journals.muni.cz/CPR/article/view/12896 |
geographic |
Antarctic Ross Island |
geographic_facet |
Antarctic Ross Island |
genre |
Antarc* Antarctic Antarctica James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctica James Ross Island Ross Island |
op_source |
Czech Polar Reports; Vol 6 No 2 (2016); 180-185 Czech Polar Reports; Vol. 6 No. 2 (2016); 180-185 1805-0697 1805-0689 |
op_relation |
http://journals.muni.cz/CPR/article/view/12896/11309 http://journals.muni.cz/CPR/article/view/12896 |
op_rights |
Copyright (c) 2020 Czech Polar Reports https://creativecommons.org/licenses/by-nc-nd/4.0 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766245075972521984 |