Metabolic modulations of Pseudomonas graminis in response to H₂O₂ in cloud water.

ABSTRACT: In cloud water, microorganisms are exposed to very strong stresses especially related to the presence of reactive oxygen species including H₂O₂ and radicals, which are the driving force of cloud chemistry. In order to understand how the bacterium Pseudomonas graminis isolated from cloud water respond to this oxidative stress, it was incubated in microcosms containing a synthetic solution of cloud water in the presence or in the absence of H₂O₂. P. graminis metabolome was examined by LC-MS and NMR after 50 min and after 24 hours of incubation. After 50 min, the cells were metabolizing H₂O₂ while this compound was still present in the medium, and it was completely biodegraded after 24 hours. Cells exposed to H₂O

SUBMITTER: Wirgot N 

PROVIDER: S-EPMC6728378 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature