caa a22 4500 475746694 CHVBK 20180406123515.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/s00284010118 doi (NATIONALLICENCE)springer-10.1007/s00284010118 Determinative Value of a Portion of the nifH Sequence for the Genera Nostoc and Anabaena (Cyanobacteria) [Elektronische Daten] [Ivica Tamas, Zorica Svircev, Siv G.E. Andersson] The taxonomic positions of Nostoc and Anabaena strains are currently disputed. We selected three Nostoc and Anabaena strains, using the classic criteria of morphology and life cycle. DNA sequences of a part of the nifH gene were determined from these strains and aligned with homologous sequences from 10 other Nostoc/Anabaena strains in the public databases. Phylogenetic reconstructions were carried out to test the consistency of the taxonomic placement of these strains. The phylogenetic trees do not separate these strains into distinct groups. Our results are in agreement with other molecular-based phylogenies that also fail to differentiate the Nostoc-Anabaena groups. The data suggest that the currently recognized genera Nostoc and Anabaena may in fact belong within a single, broadly defined genus. Springer-Verlag New York Inc., 2000 Tamas Ivica Department of Molecular Evolution, EBC, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden, SE aut Svircev Zorica Department of Microbiology, Institute of Biology, University of Novi Sad, Trg Dositeja Obradovica 2, 21 000 Novi Sad, Yugoslavia, YU aut Andersson Siv G.E. Department of Molecular Evolution, EBC, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden, SE aut https://doi.org/10.1007/s00284010118 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00284010118 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tamas Ivica Department of Molecular Evolution, EBC, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden, SE aut NATIONALLICENCE 700 1- Svircev Zorica Department of Microbiology, Institute of Biology, University of Novi Sad, Trg Dositeja Obradovica 2, 21 000 Novi Sad, Yugoslavia, YU aut NATIONALLICENCE 700 1- Andersson Siv G.E. Department of Molecular Evolution, EBC, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden, SE aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer