Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia
Abstract The freezing and desiccation tolerance of 12 Klebsormidium strains, isolated from various habitats (aeroterrestrial, terrestrial, and hydro-terrestrial) from distinct geographical regions (Antarctic — South Shetlands, King George Island, Arctic — Ellesmere Island, Svalbard, Central Europe —...
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2008
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crdegruytopen:10.2478/s11756-008-0111-2 2023-05-15T14:11:57+02:00 Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia Elster, Josef Degma, Peter Kováčik, Ľubomír Valentová, Lucia Šramková, Katarína Batista Pereira, Antonio 2008 http://dx.doi.org/10.2478/s11756-008-0111-2 https://www.degruyter.com/view/j/biolog.2008.63.issue-6/s11756-008-0111-2/s11756-008-0111-2.pdf unknown Walter de Gruyter GmbH Biologia volume 63, issue 6 ISSN 1336-9563 0006-3088 Plant Science Animal Science and Zoology Genetics Cell Biology Biochemistry Ecology, Evolution, Behavior and Systematics Molecular Biology journal-article 2008 crdegruytopen https://doi.org/10.2478/s11756-008-0111-2 2018-03-07T13:27:01Z Abstract The freezing and desiccation tolerance of 12 Klebsormidium strains, isolated from various habitats (aeroterrestrial, terrestrial, and hydro-terrestrial) from distinct geographical regions (Antarctic — South Shetlands, King George Island, Arctic — Ellesmere Island, Svalbard, Central Europe — Slovakia) were studied. Each strain was exposed to several freezing (−4°C, −40°C, −196°C) and desiccation (+4°C and + 20°C) regimes, simulating both natural and semi-natural freeze-thaw and desiccation cycles. The level of resistance (or the survival capacity) was evaluated by chlorophyll a content, viability, and chlorophyll fluorescence evaluations. No statistical differences (Kruskal-Wallis tests) between strains originating from different regions were observed. All strains tested were highly resistant to both freezing and desiccation injuries. Freezing down to −196°C was the most harmful regime for all studied strains. Freezing at −4°C did not influence the survival of studied strains. Further, freezing down to −40°C (at a speed of 4°C/min) was not fatal for most of the strains. RDA analysis showed that certain Antarctic and Arctic strains did not survive desiccation at +4°C; however, freezing at −40°C, as well as desiccation at +20°C was not fatal to them. On the other hand, other strains from the Antarctic, the Arctic, and Central Europe (Slovakia) survived desiccation at temperatures of +4°C, and freezing down to −40°C. It appears that species of Klebsormidium which occupy an environment where both seasonal and diurnal variations of water availability prevail, are well adapted to freezing and desiccation injuries. Freezing and desiccation tolerance is not species-specific nor is the resilience only found in polar strains as it is also a feature of temperate strains. Article in Journal/Newspaper Antarc* Antarctic Arctic Ellesmere Island King George Island Svalbard Sciendo (de Gruyter - via CrossRef) Arctic Antarctic The Antarctic Svalbard King George Island Ellesmere Island Biologia 63 6 843 851 |
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Open Polar |
collection |
Sciendo (de Gruyter - via CrossRef) |
op_collection_id |
crdegruytopen |
language |
unknown |
topic |
Plant Science Animal Science and Zoology Genetics Cell Biology Biochemistry Ecology, Evolution, Behavior and Systematics Molecular Biology |
spellingShingle |
Plant Science Animal Science and Zoology Genetics Cell Biology Biochemistry Ecology, Evolution, Behavior and Systematics Molecular Biology Elster, Josef Degma, Peter Kováčik, Ľubomír Valentová, Lucia Šramková, Katarína Batista Pereira, Antonio Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia |
topic_facet |
Plant Science Animal Science and Zoology Genetics Cell Biology Biochemistry Ecology, Evolution, Behavior and Systematics Molecular Biology |
description |
Abstract The freezing and desiccation tolerance of 12 Klebsormidium strains, isolated from various habitats (aeroterrestrial, terrestrial, and hydro-terrestrial) from distinct geographical regions (Antarctic — South Shetlands, King George Island, Arctic — Ellesmere Island, Svalbard, Central Europe — Slovakia) were studied. Each strain was exposed to several freezing (−4°C, −40°C, −196°C) and desiccation (+4°C and + 20°C) regimes, simulating both natural and semi-natural freeze-thaw and desiccation cycles. The level of resistance (or the survival capacity) was evaluated by chlorophyll a content, viability, and chlorophyll fluorescence evaluations. No statistical differences (Kruskal-Wallis tests) between strains originating from different regions were observed. All strains tested were highly resistant to both freezing and desiccation injuries. Freezing down to −196°C was the most harmful regime for all studied strains. Freezing at −4°C did not influence the survival of studied strains. Further, freezing down to −40°C (at a speed of 4°C/min) was not fatal for most of the strains. RDA analysis showed that certain Antarctic and Arctic strains did not survive desiccation at +4°C; however, freezing at −40°C, as well as desiccation at +20°C was not fatal to them. On the other hand, other strains from the Antarctic, the Arctic, and Central Europe (Slovakia) survived desiccation at temperatures of +4°C, and freezing down to −40°C. It appears that species of Klebsormidium which occupy an environment where both seasonal and diurnal variations of water availability prevail, are well adapted to freezing and desiccation injuries. Freezing and desiccation tolerance is not species-specific nor is the resilience only found in polar strains as it is also a feature of temperate strains. |
format |
Article in Journal/Newspaper |
author |
Elster, Josef Degma, Peter Kováčik, Ľubomír Valentová, Lucia Šramková, Katarína Batista Pereira, Antonio |
author_facet |
Elster, Josef Degma, Peter Kováčik, Ľubomír Valentová, Lucia Šramková, Katarína Batista Pereira, Antonio |
author_sort |
Elster, Josef |
title |
Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia |
title_short |
Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia |
title_full |
Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia |
title_fullStr |
Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia |
title_full_unstemmed |
Freezing and desiccation injury resistance in the filamentous green alga Klebsormidium from the Antarctic, Arctic and Slovakia |
title_sort |
freezing and desiccation injury resistance in the filamentous green alga klebsormidium from the antarctic, arctic and slovakia |
publisher |
Walter de Gruyter GmbH |
publishDate |
2008 |
url |
http://dx.doi.org/10.2478/s11756-008-0111-2 https://www.degruyter.com/view/j/biolog.2008.63.issue-6/s11756-008-0111-2/s11756-008-0111-2.pdf |
geographic |
Arctic Antarctic The Antarctic Svalbard King George Island Ellesmere Island |
geographic_facet |
Arctic Antarctic The Antarctic Svalbard King George Island Ellesmere Island |
genre |
Antarc* Antarctic Arctic Ellesmere Island King George Island Svalbard |
genre_facet |
Antarc* Antarctic Arctic Ellesmere Island King George Island Svalbard |
op_source |
Biologia volume 63, issue 6 ISSN 1336-9563 0006-3088 |
op_doi |
https://doi.org/10.2478/s11756-008-0111-2 |
container_title |
Biologia |
container_volume |
63 |
container_issue |
6 |
container_start_page |
843 |
op_container_end_page |
851 |
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1766284186288652288 |