Related Experiment Video
Updated: Aug 24, 2026

The Use of High-resolution Infrared Thermography (HRIT) for the Study of Ice Nucleation and Ice Propagation in Plants
Published on: May 8, 2015
Predisposition of trees by air pollutants to low temperatures and moisture stress
A H Chappelka1, P H Freer-Smith
1School of Forestry, Alabama Agricultural Experiment Station, Auburn University, Auburn, AL 36849, USA.
Abstract:
Air pollution can have direct effects on trees. It can cause visible injury to foliage and a disruption of physiological processes, such as photosynthesis and carbon allocation, leading to losses in growth and productivity. This review suggests that of equal or greater importance is the potential of air pollutants to indirectly affect tree growth and vitality by predisposing them to injury from other abiotic and biotic stresses. Predisposition by air pollutants can be the result of a disruption in biochemical processes, such as enzyme activity or production, or physiological factors (e.g. stomatal closure, carbon allocation). Air pollutants such as SO(2), O(3) and acidic mists have been implicated as predisposing agents to two of the most important of these stresses: low temperature and soil moisture. Probable mechanisms, as well as implications of predicted changes in global climate will be discussed.
Related Concept Videos
Responses to Heat and Cold Stress
Adaptations that Reduce Water Loss
Responses to Drought and Flooding
Decreased Body Temperature
Global Climate Change
Introduction to Plant Diversity
