The Relation of Acetylene Reduction to Heterocyst Frequency in Blue-Green Algae
- 1 November 1970
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Experimental Botany
- Vol. 21 (4) , 874-880
- https://doi.org/10.1093/jxb/21.4.874
Abstract
The variation of acetylene reduction activity and heterocyst frequency with culture age, was studied in five species of blue-green algae. The heterocyst frequency varied between 2.5 to 12.3 per cent of total cells; and the acetylene reduction activity varied 2.0-fold (average). It is suggested that an estimate of the nitrogen fixation rates in blue-green algae may be made by in situ heterocyst counts and acetylene reduction measurements.Keywords
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