Abstract
Nitrogen-limited chemostat cultures of Chlorella fusca var. vacuolata, when given nitrogen in the inorganic forms of nitrate, nitrite and ammonium divert photo-generated electrons, from CO2 fixation to nitrogen assimilation. Addition of nitrate or nitrite, but not ammonium, stimulates rate of oxygen evolution. All but the most severely nitrogen-deficient culture have increased dark respiration rates after addition of inorganic nitrogen. The nitrite reduction step of nitrogen assimilation is the most light-dependent reaction.
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Abbreviations
- DCMU:
-
3-(3′, 4′-dichloro)-1-1-dimethyl urea
- CCCP:
-
carbonyl cyanide m-chlorophenylhydrazone
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Thomas, R.J., Hipkin, C.R. & Syrett, P.J. The interaction of nitrogen assimilation with photosynthesis in nitrogen deficient cells of Chlorella . Planta 133, 9–13 (1976). https://doi.org/10.1007/BF00385999
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DOI: https://doi.org/10.1007/BF00385999