Related Experiment Video
Updated: Aug 8, 2026

Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis
Published on: December 9, 2022
Environmental Responses of the Post-lower Illumination CO(2) Burst as Related to Leaf Photorespiration
H M Vines1, Z P Tu, A M Armitage
1Department of Horticulture, University of Georgia, Athens, GA 30602.
Abstract:
As leaf irradiance is decreased in increments, a single transient CO(2) burst is exhibited by C(3) plant leaves. This post-lower illumination CO(2) burst (PLIB) is sensitive to changes in irradiance, to changes in the concentrations of O(2) and CO(2), and to temperature. Increasing O(2) concentrations above ambient produces a progressively larger PLIB while increasing CO(2) concentrations above ambient produces a progressively smaller PLIB. The PLIB, which exhibits many responses to environment common with other methods for measuring photorespiration and photosynthesis, is proposed as a measure of photorespiration in illuminated leaves of C(3) plants. Although the PLIB cannot be used as a quantitative measurement of photorespiration, we propose that the PLIB is a rapid, easy, relatively inexpensive, nondestructive method for evaluating photorespiration in intact illuminated C(3) leaves in air.
More Related Videos
06:28High Throughput Image-Based Phenotyping for Determining Morphological and Physiological Responses to Single and Combined Stresses in Potato
Published on: June 7, 2024
10:20Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses
Published on: August 9, 2019
Related Concept Videos
Responses to Drought and Flooding
The Calvin Benson Cycle
Adaptations that Reduce Water Loss
Regulation of Transpiration by Stomata
Photoreceptors and Plant Responses to Light
C4 Pathway and CAM
C4 Pathway
The C4 pathway is used by plants such as...