A glutathione peroxidase (GpoA) plays a role in the pathogenicity of Nautella italica strain R11 towards the red alga Delisea pulchra

FEMS Microbiology Ecology
Melissa GardinerSuhelen Egan

Abstract

Oxidative bursts are a common mechanism used by higher organisms to defend themselves against bacterial attacks, but some pathogenic bacteria have evolved resistance mechanisms to counteract this. The role of oxidative stress resistance as a virulence trait in macroalgal disease is however unknown. Here, we demonstrate that the gene gpoA, encoding for a glutathione peroxidase, is important for the oxidative stress response of the macroalgal pathogen Nautella italica R11. We also show that a lack of gpoA prevents N. italica R11 from inducing a bleaching disease in the red alga Delisea pulchra. These results show that a defense against oxidative stress is likely to be an important feature enabling pathogenic bacteria to infect macroalgae.

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Citations

Nov 4, 2015·Frontiers in Microbiology·Melissa GardinerSuhelen Egan
Jul 6, 2016·Frontiers in Microbiology·Teaghan J MayersRebecca J Case
Apr 19, 2017·Environmental Microbiology·Enrique Zozaya-ValdésTorsten Thomas

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