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Related Concept Videos

Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
Regulation of Transpiration by Stomata02:04

Regulation of Transpiration by Stomata

During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
Responses to Heat and Cold Stress02:45

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
Responses to Drought and Flooding02:41

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
Global Climate Change01:50

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.

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Related Experiment Video

Updated: May 23, 2026

High Throughput Image-Based Phenotyping for Determining Morphological and Physiological Responses to Single and Combined Stresses in Potato
06:28

High Throughput Image-Based Phenotyping for Determining Morphological and Physiological Responses to Single and Combined Stresses in Potato

Published on: June 7, 2024

Rising ozone concentrations decrease soybean evapotranspiration and water use efficiency whilst increasing canopy

Andy VanLoocke1, Amy M Betzelberger, Elizabeth A Ainsworth

  • 1Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

The New Phytologist
|April 25, 2012
PubMed
Summary
This summary is machine-generated.

Increasing ozone levels negatively impact soybean crops, reducing water vapor release and significantly decreasing water use efficiency (WUE) by 50%. This affects regional climate and agricultural productivity.

Related Experiment Videos

Last Updated: May 23, 2026

High Throughput Image-Based Phenotyping for Determining Morphological and Physiological Responses to Single and Combined Stresses in Potato
06:28

High Throughput Image-Based Phenotyping for Determining Morphological and Physiological Responses to Single and Combined Stresses in Potato

Published on: June 7, 2024

Area of Science:

  • Agricultural Science
  • Environmental Science
  • Atmospheric Chemistry

Background:

  • Ozone (O3) is a significant air pollutant with known impacts on plant physiology.
  • Understanding ozone's effects on crop water use and energy balance is crucial for predicting agricultural and hydrological outcomes.

Purpose of the Study:

  • To investigate the impact of elevated ozone concentrations on soybean canopy energy fluxes and water use efficiency (WUE).
  • To quantify changes in heat and water vapor exchange under varying ozone levels.

Main Methods:

  • Utilized micrometeorological measurements at the Soybean Free Air Concentration Enrichment (SoyFACE) facility.
  • Measured net radiation (Rn), sensible heat flux (H), soil heat flux (G0), and latent heat flux (λET) in soybean canopies exposed to a gradient of ozone concentrations (40–120 ppb).

Main Results:

  • Elevated ozone concentrations led to decreased latent heat flux (λET) and increased sensible heat flux (H).
  • Soybean canopies became warmer under higher ozone exposure, reducing total evapotranspiration (ET) by approximately 26%.
  • Seasonal water use efficiency (WUE) declined by 50% due to a proportionally smaller decrease in ET compared to seed yield.

Conclusions:

  • Rising ozone levels significantly alter soybean canopy energy balance and reduce water use efficiency.
  • These changes have implications for regional climate, hydrology, and agricultural ecosystem services, impacting crop productivity.