Related Experiment Video
Updated: Nov 4, 2025

Quantification of Endogenous Auxin and Cytokinin During Internode Culture of Ipecac
Published on: March 15, 2018
Extracting relevant physiological information from polar auxin transport data in Panax ginseng
Kees J M Boot1, Sander C Hille2, Henrie A A J Korthout3
1Plant Biodynamics Laboratory, Institute of Biology, Leiden University, 2333 BE, Leiden, the Netherlands; Fytagoras, 2333 BE, Leiden, the Netherlands.
Background:
Measuring polar auxin transport (PAT) in plants and drawing conclusions from the observed transport data is only meaningful if these data are being analysed with a mathematical model which describes PAT. In this report we studied the polar auxin transport in Panax ginseng stems of different age and grown on different substrates.
Methods:
We measured polar IAA transport in stems using a radio labelled IAA and analysed the transport data with a mathematical model we developed for Arabidopsis.
Results:
We found that PAT in ginseng stems, as compared to Arabidopsis inflorescence stems, has a 2-fold lower transport velocity and a 3-fold lower steady state auxin flux.
Conclusion:
We were able to pinpoint two physiological parameters that influenced the observed transport characteristics in ginseng which differ from Arabidopsis, namely an increase in immobilization together with a reduced reflux of IAA from the surrounding tissue back to the transporting cells.
More Related Videos
Related Concept Videos
Water and Mineral Acquisition
Short-distance Transport of Resources

