Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist
Abstract The effects of temperature on the growth rate and gross growth efficiency (GGE) of the heterotrophic nanoflagellate, Paraphysomonas imperforata, cultured from the Ross Sea, Antarctica were investigated using five experimental temperatures (range=0–20 °C). This bacterivorous protist exhibite...
Published in: | The ISME Journal |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press (OUP)
2008
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1038/ismej.2008.96 http://www.nature.com/articles/ismej200896.pdf http://www.nature.com/articles/ismej200896 https://academic.oup.com/ismej/article-pdf/3/2/252/56443402/41396_2009_article_bfismej200896.pdf |
id |
croxfordunivpr:10.1038/ismej.2008.96 |
---|---|
record_format |
openpolar |
spelling |
croxfordunivpr:10.1038/ismej.2008.96 2024-09-30T14:24:38+00:00 Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist Rose, Julie M Vora, Neil M Countway, Peter D Gast, Rebecca J Caron, David A 2008 http://dx.doi.org/10.1038/ismej.2008.96 http://www.nature.com/articles/ismej200896.pdf http://www.nature.com/articles/ismej200896 https://academic.oup.com/ismej/article-pdf/3/2/252/56443402/41396_2009_article_bfismej200896.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights The ISME Journal volume 3, issue 2, page 252-260 ISSN 1751-7362 1751-7370 journal-article 2008 croxfordunivpr https://doi.org/10.1038/ismej.2008.96 2024-09-17T04:27:49Z Abstract The effects of temperature on the growth rate and gross growth efficiency (GGE) of the heterotrophic nanoflagellate, Paraphysomonas imperforata, cultured from the Ross Sea, Antarctica were investigated using five experimental temperatures (range=0–20 °C). This bacterivorous protist exhibited measurable growth over the temperature range examined, although temperature exerted a significant effect on its growth rate. There was no evidence for an effect of temperature on GGE. The growth rates and GGE of our Antarctic P. imperforata isolate were compared to values reported for other cultures of species from this genus. A wide range of growth efficiencies have been reported for different strains of Paraphysomonas spp., but our estimates were comparable to mean/median values reported in the literature. The growth rates of our Antarctic P. imperforata were similar to rates obtained for an Arctic conspecific at low temperatures (0–5 °C), among the highest reported rates for any Paraphysomonas species at intermediate temperatures (10–15 °C) and similar to rates reported for temperate congeners and conspecifics at 20 °C. Q10 values of 15, 2.2, 3.6 and 0.93 were calculated for growth rates at 5 °C intervals between 0 and 20 °C, respectively. Results indicated that our Antarctic P. imperforata grew at rates comparable to other polar isolates at ambient polar temperatures, but these low temperatures may be outside the physiological optimum for the isolate. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Ross Sea Oxford University Press Antarctic Arctic Ross Sea The ISME Journal 3 2 252 260 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract The effects of temperature on the growth rate and gross growth efficiency (GGE) of the heterotrophic nanoflagellate, Paraphysomonas imperforata, cultured from the Ross Sea, Antarctica were investigated using five experimental temperatures (range=0–20 °C). This bacterivorous protist exhibited measurable growth over the temperature range examined, although temperature exerted a significant effect on its growth rate. There was no evidence for an effect of temperature on GGE. The growth rates and GGE of our Antarctic P. imperforata isolate were compared to values reported for other cultures of species from this genus. A wide range of growth efficiencies have been reported for different strains of Paraphysomonas spp., but our estimates were comparable to mean/median values reported in the literature. The growth rates of our Antarctic P. imperforata were similar to rates obtained for an Arctic conspecific at low temperatures (0–5 °C), among the highest reported rates for any Paraphysomonas species at intermediate temperatures (10–15 °C) and similar to rates reported for temperate congeners and conspecifics at 20 °C. Q10 values of 15, 2.2, 3.6 and 0.93 were calculated for growth rates at 5 °C intervals between 0 and 20 °C, respectively. Results indicated that our Antarctic P. imperforata grew at rates comparable to other polar isolates at ambient polar temperatures, but these low temperatures may be outside the physiological optimum for the isolate. |
format |
Article in Journal/Newspaper |
author |
Rose, Julie M Vora, Neil M Countway, Peter D Gast, Rebecca J Caron, David A |
spellingShingle |
Rose, Julie M Vora, Neil M Countway, Peter D Gast, Rebecca J Caron, David A Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist |
author_facet |
Rose, Julie M Vora, Neil M Countway, Peter D Gast, Rebecca J Caron, David A |
author_sort |
Rose, Julie M |
title |
Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist |
title_short |
Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist |
title_full |
Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist |
title_fullStr |
Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist |
title_full_unstemmed |
Effects of temperature on growth rate and gross growth efficiency of an Antarctic bacterivorous protist |
title_sort |
effects of temperature on growth rate and gross growth efficiency of an antarctic bacterivorous protist |
publisher |
Oxford University Press (OUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1038/ismej.2008.96 http://www.nature.com/articles/ismej200896.pdf http://www.nature.com/articles/ismej200896 https://academic.oup.com/ismej/article-pdf/3/2/252/56443402/41396_2009_article_bfismej200896.pdf |
geographic |
Antarctic Arctic Ross Sea |
geographic_facet |
Antarctic Arctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Arctic Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Arctic Ross Sea |
op_source |
The ISME Journal volume 3, issue 2, page 252-260 ISSN 1751-7362 1751-7370 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights |
op_doi |
https://doi.org/10.1038/ismej.2008.96 |
container_title |
The ISME Journal |
container_volume |
3 |
container_issue |
2 |
container_start_page |
252 |
op_container_end_page |
260 |
_version_ |
1811641725045702656 |