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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
energy
High growth rate, photosynthesis rate and increased hydrogen(ases) in manganese deprived cells of a newly isolated Nostoc-like cyanobacterium (SAG 2306)
International Journal of Hydrogen Energy, Volume 36, No. 19, Year 2011
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Description
A Nostoc-like cyanobacterium, strain SAG 2306, was isolated from a clay soil sample at Assiut region (Egypt). Morphology and analysis of 16S rDNA identified it as a member of the heterocyteous cyanobacteria (Nostocales). Unexpectedly, chlorophyll a and dry weight were higher in manganese deprived (Mn-) or in manganese double deprived (Mn - ) than in replete (Mn+) cells. The latter phase of Mn - diluted the cellular content in daughter cells to a critical minimal value of about 1.5% relative to the original 100% in Mn+. Similar to growth, Nostoc sp. exhibited a significant age-dependent biphasic impact on hydrogenases activity. Older cells of 120 h age displayed higher hydrogen evolution rates than younger ones. The results suggest inhibitory effects of the 12 μM manganese contained in BG11 medium (Mn+) not only on growth but also on hydrogen production during the first 72 h of growth. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Abdel-Basset, Refaat M.
Egypt, Asyut
Faculty of Science
Friedl, T.
Germany, Gottingen
Georg-august-universität Göttingen
Mohr, Kathrin I.
Germany, Gottingen
Georg-august-universität Göttingen
Germany, Braunschweig
Helmholtz Centre for Infection Research Hzi
Rybalka, N.
Germany, Kiel
Christian-albrechts-universität zu Kiel
Martin, William F.
Germany, Dusseldorf
Heinrich-heine-universität Düsseldorf
Statistics
Citations: 8
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.1016/j.ijhydene.2011.07.006
ISSN:
03603199
Study Locations
Egypt