Role of Pel and Psl polysaccharides in the response of to environmental challenges: oxidative stress agents (UVA, HO, sodium hypochlorite) and its competitor .

is a versatile bacterium capable of adapting to a wide range of stress factors, including solar UVA radiation (400-315 nm). High UVA doses produce lethal effects due to the action of reactive oxygen species. Sublethal UVA doses also induces oxidative damage, but, in addition, it triggers a variety of adaptive responses, including the overexpression of and genes in .