Comparison of models describing light dependence of N2 fixation in heterocystous cyanobacteria
Staal, M.; te Lintel Hekkert, S.; Herman, P.; Stal, L. (2002). Comparison of models describing light dependence of N2 fixation in heterocystous cyanobacteria. Appl. Environ. Microbiol. 68(9): 4679-4683. https://dx.doi.org/10.1128/aem.68.9.4679-4683.2002
In: Applied and Environmental Microbiology. American Society for Microbiology: Washington. ISSN 0099-2240; e-ISSN 1098-5336, more
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| Keyword |
Nodularia spumigena Mertens ex Bornet & Flahault, 1888 [WoRMS]
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| Authors | | Top |
- Staal, M.
- te Lintel Hekkert, S.
- Herman, P.
- Stal, L.
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| Abstract |
The abilities of four models to describe nitrogenase light-response curves were compared, using the heterocystous cyanobacterium Nodularia spumigena and a cyanobacterial bloom from the Baltic Sea as examples. All tested models gave a good fit of the data, and the rectangular hyperbola model is recommended for fitting nitrogenase-light response curves. This model describes an enzymatic process, while the others are empirical. It was possible to convert the process parameters between the four models and compare N2 fixation with photosynthesis. The physiological meanings of the process parameters are discussed and compared to those of photosynthesis. |
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