TY  - JOUR
A1  - Dziallas, Claudia
A1  - Grossart, Hans-Peter
T1  - Microbial interactions with the cyanobacterium Microcystis aeruginosa and their dependence on temperature
JF  - Marine biology : international journal on life in oceans and coastal waters
N2  - Associated heterotrophic bacteria alter the microenvironment of cyanobacteria and potentially influence cyanobacterial development. Therefore, we studied interactions of the unicellular freshwater cyanobacterium Microcystis aeruginosa with heterotrophic bacteria. The associated bacterial community was greatly driven by temperature as seen by DNA fingerprinting. However, the associated microbes also closely interacted with the cyanobacteria indicating changing ecological consequence of the associated bacterial community with temperature. Whereas concentration of dissolved organic carbon in cyanobacterial cultures changed in a temperature-dependent manner, its quality greatly varied under the same environmental conditions, but with different associated bacterial communities. Furthermore, temperature affected quantity and quality of cell-bound microcystins, whereby interactions between M. aeruginosa and their associated community often masked this temperature effect. Both macro- and microenvironment of active cyanobacterial strains were characterized by high pH and oxygen values creating a unique habitat that potentially affects microbial diversity and function. For example, archaea including 'anaerobic' methanogens contributed to the associated microbial community. This implies so far uncharacterized interactions between Microcystis aeruginosa and its associated prokaryotic community, which has unknown ecological consequences in a climatically changing world.
Y1  - 2012
U6  - https://doi.org/10.1007/s00227-012-1927-4
SN  - 0025-3162
VL  - 159
IS  - 11
SP  - 2389
EP  - 2398
PB  - Springer
CY  - New York
ER  -