Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination
Ultrastructural and physiological effects of exposure to 1 ppm and 5 ppm of cadmium (Cd) on cultured cells of Koliella antarctica, a green microalga from Antarctica, were investigated. The amount of Cd in the alga rose with the increase of the metal concentration in the growth medium and most Cd rem...
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ftczechacademysc:oai:kramerius.lib.cas.cz:uuid:e10b8dec-6c05-49a7-9999-d499adbb0813 2024-03-17T08:53:37+00:00 Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination La Rocca, N. Andreoli, C. Giacometti, G. M. Rascio, N. Moro, I. 471-479 média svazek https://kramerius.lib.cas.cz/view/uuid:e10b8dec-6c05-49a7-9999-d499adbb0813 https://doi.org/10.1007/s11099-009-0071-y eng eng https://kramerius.lib.cas.cz/view/uuid:e10b8dec-6c05-49a7-9999-d499adbb0813 issn:0300-3604 doi:10.1007/s11099-009-0071-y policy:public Antarctica cadmium chlorophyll fluorescence Koliella antarctica pollution effects PSII activity ultrastructure ftczechacademysc https://doi.org/10.1007/s11099-009-0071-y 2024-02-19T23:09:40Z Ultrastructural and physiological effects of exposure to 1 ppm and 5 ppm of cadmium (Cd) on cultured cells of Koliella antarctica, a green microalga from Antarctica, were investigated. The amount of Cd in the alga rose with the increase of the metal concentration in the growth medium and most Cd remained outside the cells, bound to the components of the cell walls. The increase of Cd in the microalga was concomitant with the decrease of other elements, mainly calcium (Ca). Exposure to 1 ppm Cd slowed culture growth by inhibiting cell division and also caused the development of some misshapen cells with chloroplast showing disordered thylakoids. However, this concentration did not substantially affect the chlorophyll (Chl) content or photosystem (PS) activity. At 5 ppm, Cd cell growth suddenly stopped and some cells lysed. After a week of Cd contamination, the cells were enlarged and severely damaged. The chloroplasts showed great ultrastructural alterations and a reduced Chl content. Cd exposure negatively affected PSII, whose activity was almost completely lost after four days. N. La Rocca . [et al.]. Other/Unknown Material Antarc* Antarctic Antarctica Czech Academy of Sciences: dKNAV Antarctic Rocca ENVELOPE(-68.764,-68.764,-67.783,-67.783) The Antarctic Photosynthetica 47 3 471 479 |
institution |
Open Polar |
collection |
Czech Academy of Sciences: dKNAV |
op_collection_id |
ftczechacademysc |
language |
English |
topic |
Antarctica cadmium chlorophyll fluorescence Koliella antarctica pollution effects PSII activity ultrastructure |
spellingShingle |
Antarctica cadmium chlorophyll fluorescence Koliella antarctica pollution effects PSII activity ultrastructure La Rocca, N. Andreoli, C. Giacometti, G. M. Rascio, N. Moro, I. Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination |
topic_facet |
Antarctica cadmium chlorophyll fluorescence Koliella antarctica pollution effects PSII activity ultrastructure |
description |
Ultrastructural and physiological effects of exposure to 1 ppm and 5 ppm of cadmium (Cd) on cultured cells of Koliella antarctica, a green microalga from Antarctica, were investigated. The amount of Cd in the alga rose with the increase of the metal concentration in the growth medium and most Cd remained outside the cells, bound to the components of the cell walls. The increase of Cd in the microalga was concomitant with the decrease of other elements, mainly calcium (Ca). Exposure to 1 ppm Cd slowed culture growth by inhibiting cell division and also caused the development of some misshapen cells with chloroplast showing disordered thylakoids. However, this concentration did not substantially affect the chlorophyll (Chl) content or photosystem (PS) activity. At 5 ppm, Cd cell growth suddenly stopped and some cells lysed. After a week of Cd contamination, the cells were enlarged and severely damaged. The chloroplasts showed great ultrastructural alterations and a reduced Chl content. Cd exposure negatively affected PSII, whose activity was almost completely lost after four days. N. La Rocca . [et al.]. |
author |
La Rocca, N. Andreoli, C. Giacometti, G. M. Rascio, N. Moro, I. |
author_facet |
La Rocca, N. Andreoli, C. Giacometti, G. M. Rascio, N. Moro, I. |
author_sort |
La Rocca, N. |
title |
Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination |
title_short |
Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination |
title_full |
Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination |
title_fullStr |
Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination |
title_full_unstemmed |
Responses of the Antarctic microalga Koliella antarctica (Trebouxiophyceae, Chlorophyta) to cadmium contamination |
title_sort |
responses of the antarctic microalga koliella antarctica (trebouxiophyceae, chlorophyta) to cadmium contamination |
url |
https://kramerius.lib.cas.cz/view/uuid:e10b8dec-6c05-49a7-9999-d499adbb0813 https://doi.org/10.1007/s11099-009-0071-y |
op_coverage |
471-479 |
long_lat |
ENVELOPE(-68.764,-68.764,-67.783,-67.783) |
geographic |
Antarctic Rocca The Antarctic |
geographic_facet |
Antarctic Rocca The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://kramerius.lib.cas.cz/view/uuid:e10b8dec-6c05-49a7-9999-d499adbb0813 issn:0300-3604 doi:10.1007/s11099-009-0071-y |
op_rights |
policy:public |
op_doi |
https://doi.org/10.1007/s11099-009-0071-y |
container_title |
Photosynthetica |
container_volume |
47 |
container_issue |
3 |
container_start_page |
471 |
op_container_end_page |
479 |
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1793766793153609728 |