The effects of hydrogen peroxide on the circadian rhythms of Microcystis aeruginosa.

ABSTRACT:

Background

The cyanobacterium Microcystis aeruginosa is one of the principal bloom-forming cyanobacteria present in a wide range of freshwater ecosystems. M. aeruginosa produces cyanotoxins, which can harm human and animal health. Many metabolic pathways in M. aeruginosa, including photosynthesis and microcystin synthesis, are controlled by its circadian rhythms. However, whether xenobiotics affect the cyanobacterial circadian system and change its growth, physiology and biochemistry is unknown. We used real-time PCR to study the effect of hydrogen peroxide (H(2)O(2)) on the expression of clock genes and some circadian genes in M. aeruginosa during the light/dark (LD) cycle.

Results

The results revealed that H(2)O(2) changes the expression patterns of clock genes (kaiA, kaiB

SUBMITTER: Qian H 

PROVIDER: S-EPMC3296681 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature