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Organic acids and bases and the lag phase in Nannochloris oculata

Published online by Cambridge University Press:  11 May 2009

M. R. Droop
M. R. Droop
Affiliation:
The Marine Station, Millport, Scotland
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Extract

Nannochloris oculata Droop, an obligate phototroph, has no absolute nutritional requirement for any organic compounds. However, no growth takes place in neutral media lacking base, due to the lengthening of the initial lag phase. Weak acids shorten the lag even though pH has not been altered. The lag is interpreted as the time taken for the cells to excrete sufficient weak anions to lift the carbon dioxide in solution to the minimum required for growth. Glycollate excretion is discussedin the light of this interpretation.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 46 , Issue 3 , October 1966 , pp. 673 - 678
Copyright
Copyright © Marine Biological Association of the United Kingdom 1966

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References

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