Proline accumulation response
nounPronunciation: /ˈproʊliːn əˌkjuːˈmjuleɪʃən rɪˈspɑːns/
The rapid biosynthesis and cytoplasmic accumulation of the amino acid proline in response to water or salt stress, serving as both an osmolyte and antioxidant. This response helps maintain cell turgor and protects cellular macromolecules from stress-induced damage.
Plain English
Plants quickly produce and store the amino acid proline when stressed to maintain water balance and protect cell structures.
Etymology & History
Usage
"Elevated proline accumulation response is a common biochemical marker used to assess drought stress severity in crop breeding programs."
Style guide notes: Report proline content as mg/g fresh weight or dry weight; clearly specify tissue type and stress duration.
Also known as
Related Terms
Frequently Asked Questions
Why do plants accumulate proline during water stress?
Proline acts as an osmolyte to retain water in cells and as an antioxidant to prevent cellular damage from stress.
Can proline accumulation predict drought tolerance?
High proline accumulation correlates with stress exposure but does not always indicate superior drought tolerance capability.
Why Test Candidates on This?
Frequently assessed in plant physiology and crop improvement studies as a measurable stress response indicator.
Required skill level: Mid