Increased CO<inf>2</inf> and the effect of pH on growth and calcification of Pleurochrysis carterae and Emiliania huxleyi (Haptophyta) in semicontinuous cultures

Moheimani, NR; Borowitzka, MA

Increased CO<inf>2</inf> and the effect of pH on growth and calcification of Pleurochrysis carterae and Emiliania huxleyi (Haptophyta) in semicontinuous cultures

Moheimani, NR Borowitzka, MA

Permalink

Publication Type:: Journal Article
Citation:: Applied Microbiology and Biotechnology, 2011, 90 (4), pp. 1399 - 1407
Issue Date:: 2011-05-01

Closed Access

	Filename	Description	Size
	ContentServer.asp(58).pdf	Published Version	355.16 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Moheimani, NR	en_US
dc.contributor.author	Borowitzka, MA https://orcid.org/0000-0001-6504-4563	en_US
dc.date.available	2011-02-09	en_US
dc.date.issued	2011-05-01	en_US
dc.identifier.citation	Applied Microbiology and Biotechnology, 2011, 90 (4), pp. 1399 - 1407	en_US
dc.identifier.issn	0175-7598	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117791
dc.description.abstract	The effects of changes in CO2 and pH on biomass productivity and carbon uptake of Pleurochrysis carterae and Emiliania huxleyi in open raceway ponds and a plate photobioreactor were studied. The pH of P. carterae cultures increased during day and decreased at night, whereas the pH of E. huxleyi cultures showed no significant diurnal changes. P. carterae coccolith production occurs during the dark period, whereas in E. huxleyi, coccolith production is mainly during the day. Addition of CO2 at constant pH (pH-stat) resulted in an increase in P. carterae biomass and coccolith productivity, while CO2 addition lowered E. huxleyi biomass and coccolith production. Neither of these algae could grow at less than pH 7.5. Species-specific diurnal pH and pCO2 variations could be indicative of significant differences in carbon uptake between these two species. While E. huxleyi has been suggested to be predominantly a bicarbonate user, our results indicate that P. carterae may be using CO2 as the main C source for photosynthesis and calcification. © 2011 Springer-Verlag.	en_US
dc.relation.ispartof	Applied Microbiology and Biotechnology	en_US
dc.relation.isbasedon	10.1007/s00253-011-3174-x	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Carbon Dioxide	en_US
dc.subject.mesh	Culture Media	en_US
dc.subject.mesh	Calcification, Physiologic	en_US
dc.subject.mesh	Hydrogen-Ion Concentration	en_US
dc.subject.mesh	Haptophyta	en_US
dc.subject.mesh	Photobioreactors	en_US
dc.title	Increased CO<inf>2</inf> and the effect of pH on growth and calcification of Pleurochrysis carterae and Emiliania huxleyi (Haptophyta) in semicontinuous cultures	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	90	en_US
utslib.for	MD Multidisciplinary	en_US
utslib.for	060504 Microbial Ecology	en_US
utslib.for	050209 Natural Resource Management	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	90	en_US

Abstract:

The effects of changes in CO2 and pH on biomass productivity and carbon uptake of Pleurochrysis carterae and Emiliania huxleyi in open raceway ponds and a plate photobioreactor were studied. The pH of P. carterae cultures increased during day and decreased at night, whereas the pH of E. huxleyi cultures showed no significant diurnal changes. P. carterae coccolith production occurs during the dark period, whereas in E. huxleyi, coccolith production is mainly during the day. Addition of CO2 at constant pH (pH-stat) resulted in an increase in P. carterae biomass and coccolith productivity, while CO2 addition lowered E. huxleyi biomass and coccolith production. Neither of these algae could grow at less than pH 7.5. Species-specific diurnal pH and pCO2 variations could be indicative of significant differences in carbon uptake between these two species. While E. huxleyi has been suggested to be predominantly a bicarbonate user, our results indicate that P. carterae may be using CO2 as the main C source for photosynthesis and calcification. © 2011 Springer-Verlag.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/117791