Interspecific protection against oxidative stress: green algae protect harmful cyanobacteria against hydrogen peroxide.
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ABSTRACT: Oceanographic studies have shown that heterotrophic bacteria can protect marine cyanobacteria against oxidative stress caused by hydrogen peroxide (H2 O2 ). Could a similar interspecific protection play a role in freshwater ecosystems? In a series of laboratory experiments and two lake treatments, we demonstrate that freshwater cyanobacteria are sensitive to H2 O2 but can be protected by less-sensitive species such as green algae. Our laboratory results show that green algae degrade H2 O2 much faster than cyanobacteria. Consequently, the cyanobacterium Microcystis was able to survive at higher H2 O2 concentrations in mixtures with the green alga Chlorella than in monoculture. Interestingly, even the lys
SUBMITTER: Weenink EFJ
PROVIDER: S-EPMC8248038 | biostudies-literature | 2021 May
REPOSITORIES: biostudies-literature
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