Highly ordered vertical structure of Synechococcus populations within the one-millimeter-thick photic zone of a hot spring cyanobacterial mat

Article Abstract:

The cyanobacterium Synechococcus adopts a specific position in the mat depending on the time of day. Researchers discovered that the cells assume an upright position around noon, but were randomly oriented at other times.

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Cyanobacterial ecotypes in different optical microenvironments of a 68 degrees C hot spring mat community revealed by 16S-23S rRNA internal transcribed spacer region variation

Article Abstract:

Research has been conducted on the hypothesis that subsurface layer cells can represent low-light-adapted populations. The authors suggest the necessity of use of higher-resolution genetic markers in order to be able to observe vertical population structure at higher-temperature sites.

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Light-induced motility of thermophilic Synechococcus isolates from octopus spring, Yellowstone National Park

Article Abstract:

Light-induced motility of two thermophilic Synechococcus isolates that are morphologically similar but that belong to different cyanobacterial lineages was observed. Both isolates migrated away from densely inoculated streaks to form fingerlike projections extending toward or away from the light source, depending on the light intensity. However, the two isolates appear to prefer widely different light conditions.

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