Microbial interactions with the cyanobacterium Microcystis aeruginosa and their dependence on temperature
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Microbial interactions with the cyanobacterium Microcystis aeruginosa and their dependence on temperature. / Dziallas, Claudia; Grossart, Hans-Peter.
In: Marine Biology, Vol. 159, No. 11, 2012, p. 2389-2398.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Microbial interactions with the cyanobacterium Microcystis aeruginosa and their dependence on temperature
AU - Dziallas, Claudia
AU - Grossart, Hans-Peter
PY - 2012
Y1 - 2012
N2 - Associated heterotrophic bacteria alter the microenvironment of cyanobacteria and potentially influence cyanobacterial development. Therefore, we studiedinteractions of the unicellular freshwater cyanobacterium Microcystis aeruginosa with heterotrophic bacteria. The associated bacterial community was greatly driven by temperature as seen by DNA Wngerprinting. However, theassociated microbes also closely interacted with the cyanobacteria indicating changing ecological consequence of the associated bacterial community with temperature. Whereas concentration of dissolved organic carbon incyanobacterial 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 interactionsbetween 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 aunique 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 prokaryoticcommunity, which has unknown ecological consequences in a climatically changing world.
AB - Associated heterotrophic bacteria alter the microenvironment of cyanobacteria and potentially influence cyanobacterial development. Therefore, we studiedinteractions of the unicellular freshwater cyanobacterium Microcystis aeruginosa with heterotrophic bacteria. The associated bacterial community was greatly driven by temperature as seen by DNA Wngerprinting. However, theassociated microbes also closely interacted with the cyanobacteria indicating changing ecological consequence of the associated bacterial community with temperature. Whereas concentration of dissolved organic carbon incyanobacterial 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 interactionsbetween 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 aunique 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 prokaryoticcommunity, which has unknown ecological consequences in a climatically changing world.
U2 - 10.1007/s00227-012-1927-4
DO - 10.1007/s00227-012-1927-4
M3 - Journal article
VL - 159
SP - 2389
EP - 2398
JO - Marine Biology
JF - Marine Biology
SN - 0025-3162
IS - 11
ER -
ID: 38384926