Definition of "viologen" [viologen]

• Any of a class of quaternary ammonium salts derived from 4,4'-bipyridine (noun)

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• "Data obtained with DNA microarray analysis demonstrated that the lack of one of these DnaJ proteins triggers a global stress response and therefore confers the plants greater tolerance to oxidative stress induced by high light or methyl viologen treatments."
• "After about 4 days, phenotypically normal seedlings of Nipponbare and 93-11 were chosen and placed into water containing 10 μM methyl viologen (MV) to be incubated, whereas water was used as a mock treatment."
• "In this study, methyl viologen (MV) as a ROS agent was applied to investigate the rice oxidative stress response."