TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1

ABSTRACT Thirty‐five taxa (128 clonal cultures) of Antarctic algae isolated from various habitats were assayed for growth over a range of 2–34°C. Isolates, all unialgal and two axenic, varied markedly in their temperature‐growth responses. Only four taxa belonging to either the Chlamydomonadaceae or...

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Published in:Journal of Phycology
Main Authors: Seaburg, Kenneth G., Parked, Bruce C., Wharton, Robert A., Simmons, George M.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1981
Subjects:
Online Access:http://dx.doi.org/10.1111/j.1529-8817.1981.tb00862.x
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spelling crwiley:10.1111/j.1529-8817.1981.tb00862.x 2024-10-20T14:04:10+00:00 TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1 Seaburg, Kenneth G. Parked, Bruce C. Wharton, Robert A. Simmons, George M. 1981 http://dx.doi.org/10.1111/j.1529-8817.1981.tb00862.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.1981.tb00862.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.1981.tb00862.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Phycology volume 17, issue 4, page 353-360 ISSN 0022-3646 1529-8817 journal-article 1981 crwiley https://doi.org/10.1111/j.1529-8817.1981.tb00862.x 2024-09-23T04:33:39Z ABSTRACT Thirty‐five taxa (128 clonal cultures) of Antarctic algae isolated from various habitats were assayed for growth over a range of 2–34°C. Isolates, all unialgal and two axenic, varied markedly in their temperature‐growth responses. Only four taxa belonging to either the Chlamydomonadaceae or Ulotrichaceae were obligately cold‐adapted and incapable of growth at ≥20°C. All isolates grew at temperatures ranging from 7.5 to 18°C, and a few were incapable of growth at ≤5°C. Over one‐third of the isolates grew at 30°C, but none grew at 34°C. Percentages of cold‐adapted clones correlated well with the more stable low temperature habitats. Four chlamydomonad isolates displayed optimum temperatures for growth near their maximum temperatures for growth, both temperatures being well above those of the native habitats. This temperature‐growth response suggests a closer relationship to algae from more moderate thermal regions than one might have supposed. However, the ability to grow at low temperatures and the inability to grow at 34°C suggest that these Antarctic algae are cold temperature adapted. Growth capability at low in situ temperatures is considered more useful ecologically than physiologically‐defined categories for algae based on their maximum temperature for growth. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Antarctic Journal of Phycology 17 4 353 360
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description ABSTRACT Thirty‐five taxa (128 clonal cultures) of Antarctic algae isolated from various habitats were assayed for growth over a range of 2–34°C. Isolates, all unialgal and two axenic, varied markedly in their temperature‐growth responses. Only four taxa belonging to either the Chlamydomonadaceae or Ulotrichaceae were obligately cold‐adapted and incapable of growth at ≥20°C. All isolates grew at temperatures ranging from 7.5 to 18°C, and a few were incapable of growth at ≤5°C. Over one‐third of the isolates grew at 30°C, but none grew at 34°C. Percentages of cold‐adapted clones correlated well with the more stable low temperature habitats. Four chlamydomonad isolates displayed optimum temperatures for growth near their maximum temperatures for growth, both temperatures being well above those of the native habitats. This temperature‐growth response suggests a closer relationship to algae from more moderate thermal regions than one might have supposed. However, the ability to grow at low temperatures and the inability to grow at 34°C suggest that these Antarctic algae are cold temperature adapted. Growth capability at low in situ temperatures is considered more useful ecologically than physiologically‐defined categories for algae based on their maximum temperature for growth.
format Article in Journal/Newspaper
author Seaburg, Kenneth G.
Parked, Bruce C.
Wharton, Robert A.
Simmons, George M.
spellingShingle Seaburg, Kenneth G.
Parked, Bruce C.
Wharton, Robert A.
Simmons, George M.
TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1
author_facet Seaburg, Kenneth G.
Parked, Bruce C.
Wharton, Robert A.
Simmons, George M.
author_sort Seaburg, Kenneth G.
title TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1
title_short TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1
title_full TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1
title_fullStr TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1
title_full_unstemmed TEMPERATURE‐GROWTH RESPONSES OF ALGAL ISOLATES FROM ANTARCTIC OASES 1
title_sort temperature‐growth responses of algal isolates from antarctic oases 1
publisher Wiley
publishDate 1981
url http://dx.doi.org/10.1111/j.1529-8817.1981.tb00862.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.1981.tb00862.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.1981.tb00862.x
geographic Antarctic
geographic_facet Antarctic
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
op_source Journal of Phycology
volume 17, issue 4, page 353-360
ISSN 0022-3646 1529-8817
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/j.1529-8817.1981.tb00862.x
container_title Journal of Phycology
container_volume 17
container_issue 4
container_start_page 353
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