Heat shock protein upregulation
nounPronunciation: /hiːt ʃɒk ˈproʊtiːn ˌʌprɛɡjəˈleɪʃən/
The rapid increase in expression and synthesis of heat shock proteins (HSPs) in response to elevated temperatures or other cellular stresses. These molecular chaperones stabilize denatured proteins, prevent aggregation, and facilitate proper protein refolding to maintain cellular homeostasis.
Plain English
Plants rapidly produce more protective proteins when exposed to heat or stress to prevent other proteins from breaking down.
Etymology & History
Usage
"Heat shock protein upregulation confers thermotolerance by enabling plants to recover from brief exposure to temperatures 5-10°C above their lethal threshold."
Style guide notes: Prefer 'heat shock protein upregulation' over 'HSP induction' for clarity in formal writing.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
Are heat shock proteins only activated by heat?
No; while temperature triggers them, drought, oxidative stress, and heavy metals also induce heat shock protein synthesis.
How quickly do plants upregulate heat shock proteins?
Expression begins within minutes of stress exposure, with maximum protein levels typically achieved within 1-2 hours.
Why Test Candidates on This?
Frequently tested in plant stress physiology exams focusing on temperature stress responses and molecular chaperone functions.
Required skill level: Mid