Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp.

We studied the changes in PSII photochemical processes in the cells of Antarctic algae Klebsormidium sp. and Stigeoclonium sp. exposed to salinity stress (0 – 3M NaCl) for 3 h. Salinity stress induced a decrease in the potential (FV/FM) and effective quantum yield of PSII electron transport (FPSII)....

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Published in:Czech Polar Reports
Main Authors: Canora, Diana Darriba, Guasch, Laura Llorens, Zuazo, Rebeca Sicilia
Format: Article in Journal/Newspaper
Language:unknown
Published: Masaryk University Press 2022
Subjects:
Antarc*
Antarctic
Online Access:http://dx.doi.org/10.5817/cpr2022-1-7
https://journals.muni.cz/CPR/article/download/25401/20818
id crmasarykunivpr:10.5817/cpr2022-1-7
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spelling crmasarykunivpr:10.5817/cpr2022-1-7 2024-05-19T07:32:35+00:00 Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp. Canora, Diana Darriba Guasch, Laura Llorens Zuazo, Rebeca Sicilia 2022 http://dx.doi.org/10.5817/cpr2022-1-7 https://journals.muni.cz/CPR/article/download/25401/20818 unknown Masaryk University Press https://creativecommons.org/licenses/by-nc-nd/4.0/ Czech Polar Reports volume 12, issue 1, page 89-102 ISSN 1805-0697 1805-0689 journal-article 2022 crmasarykunivpr https://doi.org/10.5817/cpr2022-1-7 2024-04-30T06:41:28Z We studied the changes in PSII photochemical processes in the cells of Antarctic algae Klebsormidium sp. and Stigeoclonium sp. exposed to salinity stress (0 – 3M NaCl) for 3 h. Salinity stress induced a decrease in the potential (FV/FM) and effective quantum yield of PSII electron transport (FPSII). Salinity stress induced a decrease in vitality index (Rfd, relative decrease of chlorophyll fluorescence). Analyses of the polyphasic fast chlorophyll fluorescence transients (OJIP) showed that with the increase in salt concentration, the chlorophyll fluorescence signals recorded at the phases J, I, and P declined, and the transient flattened with increaseing NaCl concentration reaching close to zero ChlF values at salt concentration of 3 M NaCl after 180 min. exposition. Klebsormidium sp. was found more salinity stress resistant than Stigeoclonium sp. Article in Journal/Newspaper Antarc* Antarctic Munipress - Masaryk University Press Czech Polar Reports 12 1 89 102
institution Open Polar
collection Munipress - Masaryk University Press
op_collection_id crmasarykunivpr
language unknown
description We studied the changes in PSII photochemical processes in the cells of Antarctic algae Klebsormidium sp. and Stigeoclonium sp. exposed to salinity stress (0 – 3M NaCl) for 3 h. Salinity stress induced a decrease in the potential (FV/FM) and effective quantum yield of PSII electron transport (FPSII). Salinity stress induced a decrease in vitality index (Rfd, relative decrease of chlorophyll fluorescence). Analyses of the polyphasic fast chlorophyll fluorescence transients (OJIP) showed that with the increase in salt concentration, the chlorophyll fluorescence signals recorded at the phases J, I, and P declined, and the transient flattened with increaseing NaCl concentration reaching close to zero ChlF values at salt concentration of 3 M NaCl after 180 min. exposition. Klebsormidium sp. was found more salinity stress resistant than Stigeoclonium sp.
format Article in Journal/Newspaper
author Canora, Diana Darriba
Guasch, Laura Llorens
Zuazo, Rebeca Sicilia
spellingShingle Canora, Diana Darriba
Guasch, Laura Llorens
Zuazo, Rebeca Sicilia
Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp.
author_facet Canora, Diana Darriba
Guasch, Laura Llorens
Zuazo, Rebeca Sicilia
author_sort Canora, Diana Darriba
title Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp.
title_short Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp.
title_full Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp.
title_fullStr Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp.
title_full_unstemmed Species-specific responses of Antarctic terrestrial microalgae to salinity stress. Comparative study in Klebsormidium sp. and Stigeoclonium sp.
title_sort species-specific responses of antarctic terrestrial microalgae to salinity stress. comparative study in klebsormidium sp. and stigeoclonium sp.
publisher Masaryk University Press
publishDate 2022
url http://dx.doi.org/10.5817/cpr2022-1-7
https://journals.muni.cz/CPR/article/download/25401/20818
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
op_source Czech Polar Reports
volume 12, issue 1, page 89-102
ISSN 1805-0697 1805-0689
op_rights https://creativecommons.org/licenses/by-nc-nd/4.0/
op_doi https://doi.org/10.5817/cpr2022-1-7
container_title Czech Polar Reports
container_volume 12
container_issue 1
container_start_page 89
op_container_end_page 102
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