Epicuticular wax deposition
nounPronunciation: /ˌɛpɪkjuːˈtɪkjʊlər wæks ˌdɛpəˈzɪʃən/
The formation and accumulation of hydrophobic waxy compounds on plant leaf and stem surfaces that increase water retention and reflect excess radiation during drought and high-light stress. This structural modification reduces transpirational water loss and provides physical protection.
Plain English
Plants develop a protective waxy coating on their leaves to reduce water loss and protect against harsh environmental conditions.
Etymology & History
Usage
"Epicuticular wax deposition increased significantly in desert-adapted species, providing critical protection during extreme heat stress."
Style guide notes: Distinguish epicuticular (outer) wax from intracuticular (embedded) wax when discussing mechanisms.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What components comprise epicuticular wax?
Alkanes, aldehydes, ketones, alcohols, and esters form the primary epicuticular wax composition.
How does wax deposition reduce water loss?
Hydrophobic wax coating decreases leaf surface water permeability and lowers transpiration rates.
Why Test Candidates on This?
Relevant for specialized plant morphology and drought tolerance mechanism research assessments.
Required skill level: Senior