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Characterization of Potato Tuber Tissues Using Spatialized MRI T2 Relaxometry.
Guylaine Collewet1, Saïd Moussaoui2, Stephane Quellec1
1INRAE, UR OPAALE, F-35044 Rennes, France.
Biomolecules
|February 25, 2023
Summary
Magnetic Resonance Imaging (MRI) non-destructively analyzes potato tuber defects and tissue changes during storage. MRI reveals internal flesh heterogeneity and storage evolution, demonstrating its value for plant tissue characterization.
Area of Science:
- Plant Science
- Biophysics
- Imaging Technology
Background:
- Magnetic Resonance Imaging (MRI) is crucial for non-destructive plant tissue analysis.
- Potato tuber storage involves internal tissue evolution and defect development.
Purpose of the Study:
- To analyze potato tubers using MRI to detect internal defects and track tissue evolution during storage.
- To characterize potato flesh heterogeneity using advanced MRI techniques.
Main Methods:
- Spatialized multi-exponential T2 relaxometry was employed to create bi-exponential T2 maps.
- A classification scheme identified distinct T2 homogeneous zones within tubers.
- Analysis was conducted across eight sampling dates from 14 to 33 weeks post-harvest.
Main Results:
- Six statistically distinct relaxation parameter classes were identified, enabling detection of defects, pith, and cortex tissues.
- MRI successfully differentiated three constitutive elements within the potato flesh, highlighting its heterogeneity.
- Relaxation parameters and their storage-related evolution were analyzed for each identified class.
Conclusions:
- MRI provides detailed, non-invasive characterization of plant tissues, specifically potato tubers.
- The study validates MRI's utility in assessing internal tuber quality and storage-induced changes.
- T2 relaxometry and classification schemes effectively reveal potato tuber internal structure and dynamics.
