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Comparison of models describing light-dependence of N2 fixation in heterocystous cyanobacteria

Staal, M.J. and te Lintel Hekkert, S. and Herman, P.M.J. and Stal, L.J. (2002) Comparison of models describing light-dependence of N2 fixation in heterocystous cyanobacteria. Applied and Environmental Microbiology, 68, 4679-4683. ISSN 0099-2240.

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Official URL: http://dx.doi.org/10.1128/AEM.68.9.4679-4683.2002

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.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:11229
Deposited On:24 Nov 2011 01:00
Last Modified:31 Mar 2014 10:03

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