Xenobiotic Stress Response
nounPronunciation: /ˌzɛnəˈbaɪɒtɪk ˈstrɛs rɪˈspɒns/
The physiological and molecular mechanisms by which plants perceive and respond to external chemical compounds, including pollutants, pesticides, and heavy metals, that threaten cellular integrity. These responses involve activation of detoxification pathways and may include growth inhibition or increased secondary metabolite production.
Plain English
How plants detect and defend themselves against harmful foreign chemicals in their environment.
Etymology & History
Usage
"The xenobiotic stress response activated glutathione-S-transferase enzymes, enabling detoxification of accumulated pesticide residues."
Style guide notes: Hyphenate 'xenobiotic-stress-response' only when used as compound adjective; define on first use.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What are examples of xenobiotics affecting plants?
Pesticides, heavy metals, industrial pollutants, and synthetic chemicals are common xenobiotics impacting plant physiology.
Which enzymes are involved in xenobiotic stress response?
Glutathione-S-transferases, cytochrome P450 enzymes, and UDP-glucuronosyltransferases mediate detoxification pathways.
Why Test Candidates on This?
Xenobiotic stress responses are tested in advanced physiology and environmental stress management courses.
Required skill level: Senior