redox homeostasis
nounPronunciation: /ˈriːdɒks ˌhoʊmiːoʊˈsteɪsɪs/
The dynamic maintenance of balanced cellular oxidation-reduction reactions essential for metabolic function and stress signaling under abiotic perturbation. Redox homeostasis involves coordinated activity of antioxidant enzymes and non-enzymatic molecules that regulate reactive oxygen species (ROS) levels.
Plain English
A plant cell's ability to balance the production and removal of reactive oxygen molecules that would otherwise damage cellular components.
Etymology & History
Usage
"Redox homeostasis disruption was identified as the primary mechanism of cellular damage in tomato plants exposed to prolonged heat stress."
Style guide notes: Distinguish 'redox homeostasis' (maintained state) from 'oxidative stress' (failure state) in scientific manuscripts.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What happens when redox homeostasis fails in plants?
Reactive oxygen species accumulate, damaging proteins, lipids, and DNA, leading to cell death and reduced stress tolerance.
Which enzymes are crucial for redox homeostasis?
Catalase, superoxide dismutase, and peroxidases are primary antioxidant enzymes that regulate reactive oxygen species levels.
Why Test Candidates on This?
Critical for understanding cellular stress responses and evaluating plant tolerance mechanisms in research and breeding programs.
Required skill level: Senior