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Reevaluation of the nitrogen fixation behavior in the marine non-heterocystous cyanobacterium Lyngbya majuscula
Stockholm University, Faculty of Science, Department of Botany. Växtfysiologi. (Birgitta Bergman)
Stockholm University, Faculty of Science, Department of Botany. Växtfysiologi. (Birgitta Bergman)
Stockholm University, Faculty of Science, Department of Botany. Växtfysiologi.
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2003 (English)In: Journal of Phycology, Vol. 39, no 2, 310-314 p.Article in journal (Refereed) Published
Abstract [en]

Abstract: Lyngbya majuscula Harvey ex Gomont is a common marine cyanobacterium in tropical and subtropical near-shore waters. A few reports have indicated that L. majuscula fixes nitrogen only in the light. Because this feature is uncommon among non-heterocystous cyanobacteria, we attempted a reevaluation. Nitrogenase activity, regulation, and localization were examined over diel cycles on natural populations of L. majuscula growing in subtidal zones off Zanzibar in the western Indian Ocean. The data show that L. majuscula fixed nitrogen and synthesized nitrogenase in all cells during the dark phase of a diel cycle. During the light phase, nitrogenase was degraded to undetectable levels.

Place, publisher, year, edition, pages
2003. Vol. 39, no 2, 310-314 p.
Keyword [en]
cyanobacteria, Indian Ocean, Lyngbya majuscula, nifH, nitrogenase, Zanzibar
National Category
Microbiology Botany
Identifiers
URN: urn:nbn:se:su:diva-17907OAI: oai:DiVA.org:su-17907DiVA: diva2:184428
Available from: 2009-01-22 Created: 2009-01-22 Last updated: 2011-01-13Bibliographically approved

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