Iron starvation leads to oxidative stress in Anabaena sp. strain PCC 7120.
We establish here that iron deficiency causes oxidative stress in the cyanobacterium Anabaena sp. strain PCC 7120. Iron starvation leads to a significant increase in reactive oxygen species, whose effect can be abolished by treatment with the antioxidant tempol (4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl). Oxidative stress induced by iron starvation could be a common feature of photosynthetic bacteria.
Latifi
Amel
A
Laboratoire de Chimie Bactérienne, IBSM-CNRS, 31 chemin Joseph Aiguier, 13402 Marseille cedex 20, France. latifi@ibsm.cnrs-mrs.fr
Jeanjean
Robert
R
Lemeille
Sylvain
S
Havaux
Michel
M
Zhang
Cheng-Cai
CC
D017033:Anabaena / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*; D003497:Cyclic N-Oxides / Q000494:pharmacology; D015964:Gene Expression Regulation, Bacterial / Q000187:drug effects; D000090463:Iron Deficiencies; D018384:Oxidative Stress / Q000187:drug effects / Q000502:physiology*; D013113:Spin Labels
D003497:Cyclic N-Oxides; D013113:Spin Labels; C001803:tempol