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Monitoring Xylem Transport in Arabidopsis thaliana Seedlings Using Fluorescent Dyes
Kai Bartusch1, Noel Blanco-Touriñán2, Antia Rodriguez-Villalón2
1Group of Phloem Development and Function, Institute of Molecular Plant Biology, Department of Biology, ETH Zürich, Zürich, Switzerland. kai.bartusch@biol.ethz.ch.
Methods in Molecular Biology (Clifton, N.J.)
|October 28, 2023
Summary
This study introduces a new, fast, and noninvasive method to observe plant xylem transport in roots using fluorescent dyes. This technique allows for detailed cellular-level monitoring of root-to-shoot transport in seedlings.
Area of Science:
- Plant Biology
- Plant Physiology
- Vascular Biology
Background:
- Observing plant vascular transport, particularly xylem function, is crucial for understanding plant physiology.
- Existing methods for monitoring xylem transport in plant roots in vivo are technically challenging and lack throughput.
- Fluorescent dyes are valuable tools for visualizing biological processes but their application in root xylem has been limited.
Purpose of the Study:
- To develop a fast, noninvasive, and high-throughput protocol for monitoring xylem transport in plant seedlings.
- To enable cellular-level observation of xylem transport dynamics in Arabidopsis thaliana roots.
- To provide a versatile method applicable to primary roots, lateral roots, and grafted seedlings.
Main Methods:
- Application of fluorescent dyes, specifically 5(6)-carboxyfluorescein diacetate (CFDA) and Rhodamine WT, to primary roots of young Arabidopsis thaliana seedlings.
- Development of protocols for monitoring root-to-shoot xylem transport and measuring xylem transport velocity.
- Adaptation of the protocol for assessing xylem (re)connection in lateral roots and grafted seedlings.
Main Results:
- Successful visualization of xylem transport at the cellular level in Arabidopsis thaliana roots using CFDA and Rhodamine WT.
- Demonstration of the protocol's ability to monitor root-to-shoot xylem transport and quantify transport velocity.
- Validation of the protocol's applicability to lateral roots and grafted seedlings, enabling assessment of xylem reconnection.
Conclusions:
- The presented protocol offers a significant advancement in the noninvasive monitoring of plant xylem functionality.
- This technique provides a high-throughput and versatile tool for diverse research applications investigating xylem transport and integrity.
- The method facilitates a deeper understanding of xylem functionality across various experimental setups, including root development and grafting.
