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Updated: Jan 29, 2026
12:10
Stable Isotopic Profiling of Intermediary Metabolic Flux in Developing and Adult Stage Caenorhabditis elegans
Published on: February 27, 2011
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Quantitative Auxin Metabolite Profiling Using Stable Isotope Dilution UHPLC-MS/MS.
Ondřej Novák1,2, Aleš Pěnčík2,3, Ota Blahoušek1
1Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany CAS, Faculty of Science, Palacký University, Olomouc, Czech Republic.
Current Protocols in Plant Biology
|February 19, 2019
Summary
Researchers developed a new mass spectrometry method to precisely measure indole-3-acetic acid (IAA) and related compounds in plants. This technique aids in understanding plant hormone regulation and development.
Area of Science:
- Plant Biology
- Biochemistry
- Analytical Chemistry
Background:
- Auxin is a crucial plant hormone regulating growth and development.
- Understanding auxin metabolism is key to deciphering plant developmental processes.
- Existing methods for quantifying auxin metabolites are limited.
Purpose of the Study:
- To develop a sensitive and selective mass spectrometry-based protocol for multiplex quantification of indole-3-acetic acid (IAA) and its metabolites.
- To establish a derivatization protocol for labile IAA precursors (IPyA, IAAld).
- To enable quantitative profiling of the IAA metabolome in small plant tissue samples.
Main Methods:
- Development of a mass spectrometry-based protocol.
- Establishment of a derivatization technique for indole-3-acetic acid precursors.
- Application of a standard isotope dilution method.
Main Results:
- A sensitive and selective protocol for multiplex quantification of IAA and its precursors/degradation products was established.
- A robust derivatization protocol for labile IAA precursors (IPyA, IAAld) was developed.
- The method allows for quantitative profiling of the IAA metabolome in small plant tissue amounts.
Conclusions:
- The developed protocol provides a reliable method for studying auxin homeostasis in plants.
- This technique facilitates a deeper understanding of auxin's role in plant growth and development.
- The method is suitable for analyzing small plant tissue samples, advancing plant hormone research.
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