Related Experiment Video
Updated: Oct 19, 2025
The Effect of Ultraviolet Radiation on the Chemical Bath Deposition of Bisthiourea Cadmium Chloride Crystals and the Subsequent CdS Obtention
Published on: August 30, 2018
Analyzing cadmium-phytochelatin2 complexes in plant using terahertz and circular dichroism information
Yinglei Zhao1, Mostafa Gouda2, Guohong Yu3
1Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences, 310000 Hangzhou, China; College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Spectroscopy Sensing, Ministry of Agriculture, Hangzhou 310058, China.
Terahertz spectroscopy can detect heavy metal-phytochelatin complexes in plants, simplifying the identification of cultivars for effective phytoextraction. This method offers a novel approach for analyzing plant heavy metal tolerance and enrichment capabilities.
Area of Science:
- Plant biochemistry and spectroscopy
- Environmental science and phytoremediation
Background:
- Phytochelatins (PCs) are crucial plant peptides for detoxifying heavy metals.
- Identifying cultivars with high heavy metal tolerance and enrichment is key for phytoextraction.
- Developing rapid detection methods for heavy metal-PC complexes is essential.
Purpose of the Study:
- To characterize phytochelatin2 (PC2) and its cadmium (Cd) complex using terahertz (THz) spectroscopy.
- To develop a method for detecting and quantifying Cd-PC2 complexes in pak choi leaves.
- To evaluate THz spectroscopy as a tool for assessing phytoextraction performance.
Main Methods:
- Terahertz (THz) spectroscopy combined with density functional theory (DFT), chemometrics, and circular dichroism.
- Analysis of PC2, Cd-PC2 standards, and Brassica chinensis (pak choi) leaves.
- Partial least squares regression (PLSR) with successive projections algorithm (SPA) for model optimization.
Main Results:
- PC2 chelates Cd2+ in a 2:1 ratio, forming Cd(PC2)2 complexes.
- Cd binding alters PC2 structure, suppressing specific THz vibrations (1.03 and 1.71 THz).
- Optimized models detected Cd-PC2 in pak choi with a limit of detection of 1.151 ppm.
Conclusions:
- THz spectroscopy effectively characterizes heavy metal-PC complexes.
- THz absorbance provides a simpler alternative to classical indices for evaluating phytoextraction.
- A general protocol for analyzing heavy metal-PC complexes in plants using THz spectroscopy was established.
More Related Videos
12:03Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
Published on: September 1, 2020
07:54Analysis of AtHIRD11 Intrinsic Disorder and Binding Towards Metal Ions by Capillary Gel Electrophoresis and Affinity Capillary Electrophoresis
Published on: August 22, 2018
