Nitrogenase activity associated with Zostera marina from a North Carolina estuary

Autor:	Steven S. Hayasaka, Garriet W. SmithG.W. Smith
Rok vydání:	1982
Předmět:	geography geography.geographical_feature_category Ecology Immunology Nitrogenase Estuary General Medicine Biology biology.organism_classification Applied Microbiology and Biotechnology Microbiology Botany Genetics Zostera marina Molecular Biology
Zdroj:	Canadian Journal of Microbiology. 28:448-451
ISSN:	1480-3275 0008-4166
DOI:	10.1139/m82-067
Popis:	Nitrogenase activity (at in situ temperatures) associated with Zostera marina reflected the active growth periods of this plant in North Carolina coastal waters. During the plants most active growth period (late winter – spring) nitrogenase activity was primarily rhizospheric (8.47 μmol nitrogen fixed∙m−2∙day−1), while during its fall – early winter period it was primarily phyllospheric (8.03 μmol nitrogen fixed∙m−2∙day−1). No nitrogenase activity was detected during the warmer summer months when the plant is dormant. Phyllospheric nitrogenase activity (possibly the result of epiphytic heterocystic blue-green bacteria) was highest when plants were incubated aerobically in the presence of light.
Databáze:	OpenAIRE
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