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- Title
Morphological transformation in a freshwater Cyanobium sp. induced by grazers.
- Authors
Jezberov, Jitka; Komárkov, Jaroslava
- Abstract
We document a remarkable morphological transformation, attributable to grazing by nanoflagellate Ochromonas sp. DS , of a phycocyanin-rich freshwater Cyanobium sp. (10-NR 98.2% similar 16S rRNA gene sequence to the type species Cyanobium gracile) . The single cells aggregated into microcolonies (average size 40 μm) in the presence of the protist. Colonies were characterized by hundreds of tubes (spinae), 100 nm to 1 μm long and 63 ± 6 nm wide, on the surfaces of the Cyanobium cells co-cultured with Ochromonas. Spinae production, previously unknown for the freshwater Cyanobium species, suggests that picocyanobacterial life strategies are more flexible than previously thought.
- Subjects
OCHROMONAS; CYANOBACTERIA; PROKARYOTES; OCHROMONADACEAE; OCHROMONADALES
- Publication
Environmental Microbiology, 2007, Vol 9, Issue 7, p1858
- ISSN
1462-2912
- Publication type
Article
- DOI
10.1111/j.1462-2920.2007.01311.x