Growth and Nitrogen Fixation by Westiellopsis prolifica Janet
- 1 April 1966
- journal article
- research article
- Published by Oxford University Press (OUP) in Annals of Botany
- Vol. 30 (2) , 231-238
- https://doi.org/10.1093/oxfordjournals.aob.a084070
Abstract
The blue-green alga Westiellopsis prolifica Janet has been isolated in unialgal bacteria-free culture. Evidence of the ability of this algs to fix elementary nitrogen was obtained by demonstration of increase in total combined nitrogen in cultures by the micro-Kjeldahl method and also by the uptake of 15N as demonstrated by the use of the mass spectrometer. The growth and nitrogen-fixing capacity of the alga was studied in relation to temperature and light intensity. Increase in dry weight was greatest at 40° C but the optimum for nitrogen fixation was between 30 and 35°C. A considerable proportion of the nitrogen fixed was released in soluble organic form into the medium.This publication has 5 references indexed in Scilit:
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