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Soldatini, G.F. ; Ziegler, I. ; Ziegler, H.

Sulfite: Preferential sulfur source and modifier of CO2 fixation in Chlorella vulgaris.

Planta 143, 225-231 (1978)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
Sulfite was added at the time of inoculation to a standard and to a sulfate deficient medium of Chlorella vulgaris. It was not only used as a sulfur source, but besides this, at concentrations <1.0 mmol l-1, the growth yield was enhanced up to 30% compared to sulfate saturated conditions. Higher sulfite concentrations increasingly inhibited cell growth. Growth rate determinations indicated that the enhancement, and the inhibition respectively, were confined to the very beginning of culture growth; the time period during which the sulfite was not yet oxidized (5-10 h). In contrast, an increased CO2 fixation rate/unit of protein, occurring up to 5.0 mmol l-1 sulfite and a shift towards the β-carboxylation pathway, are persisting at least during the growth period of 4 days. The preferential uptake of sulfite, also indicated by a marked increase in methionine content of algal protein, presumably causes an increase in thylakoidal sulfolipids, and is such modifying the CO2 fixation.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Chlorella ; Co2 Fixation ; Growth Yield ; Methionine ; O2 Evolution ; Sulfite Action ; Sulfolipids
ISSN (print) / ISBN 0032-0935
e-ISSN 1432-2048
Journal Planta
Quellenangaben Volume: 143, Issue: 2, Pages: 225-231 Article Number: , Supplement: ,
Publisher Springer
Reviewing status Peer reviewed
Institute(s) Institute of Molecular Toxicology and Pharmacology (TOX)