Characterization of ten H-2 producing cyanobacteria isolated from the Baltic Sea and Finnish lakes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Leino, H (Autor) Outra; Shunmugam, S (Autor) Outra; Isojarvi, J (Autor) Outra; Oliveira, P (Autor) Outra; Mulo, P (Autor) Outra; Saari, L (Autor) Outra; Battchikova, N (Autor) Outra; Sivonen, K (Autor) Outra; Lindblad, P (Autor) Outra; Aro, EM (Autor) Outra; Allahverdiyeva, Y (Autor) Outra

Revista

Título: International Journal of Hydrogen Energy

Vol. 39 Nº 25

Páginas: 8983-8991

ISSN: 0360-3199

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 21 Citações

Outras Informações

ID Authenticus: P-009-DQY

DOI: 10.1016/j.ijhydene.2014.03.171

Abstract (EN): The genetic background and activities of the enzymes involved in H-2 production were investigated from ten distinct H-2 producing cyanobacteria, revealed by a recent screening. All strains are N-2-fixing, filamentous and heterocystous. Southern hybridization revealed that the tested strains possess the genes encoding the conventional nitrogenase (nifHDK1), and lack the alternative nitrogenases. The high H-2 production rate of these strains was shown not to be dependent on the presence of highly active nitrogenase or bidirectional hydrogenase enzymes. Moreover, most of the strains possessed a highly active uptake hydrogenase enzyme. We also examined the structure of the nif and hup operons encoding nitrogenase and uptake hydrogenase enzymes in the Calothrix 336/3 strain, the best H-2 producer in the screening. We concluded that the ability of the cyanobacteria to produce high levels of H-2 is not directly linked to the maximum capacities of the enzymes involved in H-2 production. Copyright

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9