Related Experiment Video
Updated: May 3, 2026

Using Changes in Leaf Transmission to Investigate Chloroplast Movement in Arabidopsis thaliana
Published on: July 14, 2021
The action of dinaction on volume changes of whole chloroplasts in light and dark
1Institut für Allgemeine Botanik der Universität Zürich, Zurich, Schweiz.
Abstract:
1. Whole chloroplasts exhibit a fast and strong swelling after addition of dinactin (final concentration 10(-5) m). 2. When illuminated the partieles shrink again and reach their original volume after 15 minutes. ATP may replace the light in this energy-dependent volume reduction. 3. Both swelling and subsequent shrinking are more pronounced in a hypertonic solution of KCl than in a NaCl-medium of the same concentration. 4. These results are discussed in relation to the known ion selectivity of the macrotetralides and the possible presence of light-driven K(+) pump.
More Related Videos
07:58Author Spotlight: Non-Invasive High-Resolution Measurement of Chlorophyll Synthesis During De-Etiolation
Published on: January 12, 2024
11:28Isolating and Incorporating Light-Harvesting Antennas from Diatom Cyclotella Meneghiniana in Liposomes with Thylakoid Lipids
Published on: August 28, 2018
Related Concept Videos
Cell Signaling in Plants
Regulation of Transpiration by Stomata
Photosystems
Functioning of Photosystems
Photosystems contain many pigment molecules, such as chlorophylls and carotenoids, arranged in a particular organization across two domains — the antenna complex and the reaction center. The main aim of the pigment...
Photoreceptors and Plant Responses to Light
The Antenna Complex
Anatomy of Chloroplasts