AI Article Synopsis
- The study examines how different metals are distributed within the root system of Spartina alterniflora collected from the Yangtze River intertidal zone.
- The research utilized advanced techniques like synchrotron X-ray fluorescence and computed microtomography for detailed micro-scale analysis.
- Findings indicate that while metals are present in both the epidermis and vascular tissue, iron plaque is primarily found in the epidermis and may influence the uptake of other metals in the roots.
Article Abstract
This study is focused on micro-scale measurement of metal (Ca, Cl, Fe, K, Mn, Cu, Pb, and Zn) distributions in Spartina alterniflora root system. The root samples were collected in the Yangtze River intertidal zone in July 2013. Synchrotron X-ray fluorescence (XRF), computed microtomography (CMT), and X-ray absorption near-edge structure (XANES) techniques, which provide micro-meter scale analytical resolution, were applied to this study. Although it was found that the metals of interest were distributed in both epidermis and vascular tissue with the varying concentrations, the results showed that Fe plaque was mainly distributed in the root epidermis. Other metals (e.g., Cu, Mn, Pb, and Zn) were correlated with Fe in the epidermis possibly due to scavenge by Fe plaque. Relatively high metal concentrations were observed in the root hair tip. This micro-scale investigation provides insights of understanding the metal uptake and spatial distribution as well as the function of Fe plaque governing metal transport in the root system.
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| http://dx.doi.org/10.1007/s11356-015-5068-4 | DOI Listing |
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