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Related Concept Videos

Plant Tissue Culture02:57

Plant Tissue Culture

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Plant tissue culture is widely used in both primary and applied science. Applications range from plant development studies to functional gene studies, crop improvement, commercial micropropagation, virus elimination, and conservation of rare species.
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Related Experiment Video

Updated: Feb 8, 2026

Laser-Capture Microdissection RNA-Sequencing for Spatial and Temporal Tissue-Specific Gene Expression Analysis in Plants
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Auxin analysis using laser microdissected plant tissues sections.

Luz G Muñoz-Sanhueza1, YeonKyeong Lee1, Molly Tillmann2

  • 1Department of Plant Sciences (IPV), Faculty of Biosciences, Norwegian University of Life Sciences, Norway Campus Ås, Universitetstunet 3, 1430, Ås, Norway.

BMC Plant Biology
|June 27, 2018
PubMed
Summary

We developed a new method combining cryosectioning, freeze-drying, and laser microdissection microscopy (LMD) for precise auxin quantification in plant tissues. This technique preserves analytes, enabling high-resolution studies of plant development.

Keywords:
Auxin quantificationCryosectioningFreeze dryingGC-MS/MS quantificationIsotope dilution analysisLaser microdissection microscopeLyophilisationMinute samplesPlant sample preparation

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Area of Science:

  • Plant Biology
  • Hormone Signaling
  • Analytical Chemistry

Background:

  • Accurate auxin quantification complements gene expression studies in plants.
  • Advancements in analytical methods allow picogram-level auxin detection, reducing tissue requirements.
  • Laser microdissection microscopy (LMD) enables spatially resolved cell harvesting but poses sample preservation challenges.

Purpose of the Study:

  • To develop and validate a novel sample preparation protocol for ultrasensitive, spatially-resolved auxin quantification.
  • To overcome limitations in analyte preservation during LMD sampling for hormone analysis.

Main Methods:

  • Combined cryosectioning, freeze-drying, and laser microdissection microscopy (LMD) for sample preparation.
  • Utilized gas chromatography-tandem mass spectrometry (GC-MS/MS) for indole-3-acetic acid (IAA) quantification.
  • Developed a protocol suitable for small molecule analysis requiring high tissue specificity and preservation.

Main Results:

  • Successfully preserved plant tissues for indole-3-acetic acid (IAA) quantification, minimizing auxin degradation.
  • Demonstrated the feasibility of collecting approximately 15 mg of specific tissue within 4 hours using LMD.
  • Validated the protocol for high-quality, well-preserved plant material suitable for sensitive analysis.

Conclusions:

  • Freeze-dried cryosections are suitable for LMD harvest and auxin quantification via GC-MS/MS.
  • This method enables spatial and temporal resolution for auxin level analysis.
  • The technique is expected to advance understanding of auxin's roles in plant development and other phytohormones.