The rfb-associated gene cluster contributes to oxidative stress tolerance in Synechocystis sp. PCC 6803 through extracellular polysaccharide homeostasis.
Paraquat (PQ; methyl viologen, MV) is a redox-cycling herbicide that causes oxidative injury through the continuous generation of reactive oxygen species (ROS). However, the genetic and extracellular mechanisms underlying cyanobacterial protection against MV-induced oxidative stress remain incompletely understood. Here...