Related Experiment Video
Updated: May 5, 2026

Using Changes in Leaf Transmission to Investigate Chloroplast Movement in Arabidopsis thaliana
Published on: July 14, 2021
Chloroplast translocations induced by light pulses : Effects of single light pulses
H Gabrys1, T Walczak, J Zurzycki
1Department of Plant Physiology, Institute of Molecular Biology, Jagellonian University, Grodzka 53, PL-31-001, Kraków, Poland.
Abstract:
The effect of single blue-light pulses on chloroplast rearrangement was studied in the leaves of Tradescantia albiflora, Chlorophytum elatum, and Lemna trisulca. For measuring translocations in terrestrial plants the method of transmission changes was used; translocations in the water plant Lemna were studied by direct microscopic observation and counting. Strong light (30 W m(-2)) applied in the form of short pulses, shorter than a lag period of translocations, induces some transient effects in the following dark period. With short pulses, transient rearrangements of chloroplasts to a weak-light position were found. With longer pulse duration, biphasic responses took place in Tradescantia and Lemna: The initial movement to a partial strong-light position was followed by a wave of translocation to a weak-light arrangement. In Chlorophytum this type of response appeared only in a narrow fluence range. The validity of the reciprocity law in relation to fluence rate and time of irradiation was confirmed for Tradescantia. The results may give us an insight into the kinetics of the primary effects of light in the translocation process.
More Related Videos
07:42Rapid Analysis of Circadian Phenotypes in Arabidopsis Protoplasts Transfected with a Luminescent Clock Reporter
Published on: September 17, 2016
10:20Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses
Published on: August 9, 2019
Related Concept Videos
Photoreceptors and Plant Responses to Light
Protein Transport to the Inner Chloroplast Membrane
Protein Transport to the Outer Chloroplast Membrane
Two models describe the mechanism of precursor recognition and entry across the outer membrane through the TOC complex. Model 1 suggests the newly synthesized precursor binds to the TOC receptor 159 and forms a complex.
Protein Transport to the Stroma
Protein complexes called the translocon of the outer chloroplast membrane or TOC complex, and the translocon of the inner chloroplast membrane or TIC complex mediate the...
Protein Transport to the Thylakoids
Overview of Transposition and Recombination