Quantify Proline Accumulation to Assess Plant Stress Response
A Molecular Insight Into How Plants Are Coping With Stress
When plants are exposed to heat, drought, salinity, or heavy metals, they don’t always show visible symptoms— but internally, proline levels spike. Proline is a naturally occurring amino acid that plays a critical role in plant stress response. By measuring proline accumulation in leaf tissue, this test helps you evaluate early-stage stress, osmotic imbalance, and oxidative load
before damage is irreversible.
The Proline Stress Indicator Test
is ideal for research trials, agronomic diagnostics, and advanced crop management
under suboptimal growing conditions.
What This Test Measures
Free Proline Concentration
in fresh plant tissue
Reported in standardized units for comparative and diagnostic use
Serves as a biochemical marker for abiotic stress, including:
Drought
Salinity
Temperature extremes
Heavy metal exposure
General oxidative stress
Why Proline Matters
Osmoregulation
– Helps maintain water balance under drought or salt stress
Membrane Stability
– Prevents electrolyte leakage and cell damage
Antioxidant Role
– Reduces oxidative stress by neutralizing ROS
Stress Signaling
– Functions as a biochemical “alert” during environmental pressure
This test is especially valuable when paired with visual assessments, nutrient tests, or environmental data
for a complete plant health profile.
Sample Requirements
Fresh Tissue: 15–20 full leaves per sample ▪️ Double the amount for small-leaf crops (under 1 inch in size)
Packaging: Ship in paper bags only(plastic will cause degradation)
Hi there! Have some questions about our company? Find the answers below.
What are your business hours?
Our office is open Monday thru Friday from 8 am to 5 pm. We do close for major holidays, so we recommend ordering your testing and sending your sample early if a holiday is coming up. You can always reach us by email. Just send us a message at info@tpslab.com
When will I get my results?
We understand that you need your results as soon as possible. That is why we make sure to begin processing your samples as soon as they arrive at our laboratory. When the results are ready, we will email them to the email address you provided on your submittal form. The list below will give you an idea of our usual turnaround times.
Soil Tests: 5-7 Business days
Water Tests: 5 - 7 Business days
Plants Tests: 24 - 48 Hours
Compost Tests: 7 - 14 Business days
Fertilizer Tests: 3 - 5 Business days
Heavy Metals Test: 7 - 14 Business days
We offer a rush option for an additional 50% of the testing cost, but we would encourage you to give yourself time to test before you get to a point where a rush is needed.
