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Title: Nanoscale measurement of trace element distributions in Spartina alterniflora root tissue during dormancy

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep40420· OSTI ID:1351732
 [1];  [1];  [2];  [2];  [3];  [3];  [3];  [3];  [3];  [4];  [5];  [6]
  1. Montclair State Univ., NJ (United States). Dept. of Earth and Environmental Studies
  2. State Univ. of New York (SUNY), Stony Brook, NY (United States). School of Marine and Atmospheric Science
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  4. Shenyang Agricultural Univ. (China). College of Land and Environment
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Computational Science Center
  6. Brookhaven National Lab. (BNL), Upton, NY (United States). Biological Sciences Dept.
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Here, this article reports a nanometer-scale investigation of trace element (As, Ca, Cr, Cu, Fe, Mn, Ni, S and Zn) distributions in the root system Spartina alterniflora during dormancy. The sample was collected on a salt marsh island in Jamaica Bay, New York, in April 2015 and the root was cross-sectioned with 10 μm resolution. Synchrotron X-ray nanofluorescence was applied to map the trace element distributions in selected areas of the root epidermis and endodermis. The sampling resolution was 60 nm to increase the measurement accuracy and reduce the uncertainty. The results indicate that the elemental concentrations in the epidermis, outer endodermis and inner endodermis are significantly (p < 0.01) different. The root endodermis has relatively higher concentrations of these elements than the root epidermis. Furthermore, this high resolution measurement indicates that the elemental concentrations in the outer endodermis are significantly (p < 0.01) higher than those in the inner endodermis. These results suggest that the Casparian strip may play a role in governing the aplastic transport of these elements. Pearson correlation analysis on the average concentrations of each element in the selected areas shows that most of the elements are significantly (p < 0.05) correlated, which suggests that these elements may share the same transport pathways.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); China Scholarship Council
Grant/Contract Number:
SC0012704; AC0298CH10886; MCB-1051675
OSTI ID:
1351732
Report Number(s):
BNL-113720-2017-JA
Journal Information:
Scientific Reports, Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (3)

Metal biomonitoring in a Patagonian salt marsh journal September 2018
Multi-slice ptychography with large numerical aperture multilayer Laue lenses journal January 2018
Achieving diffraction-limited nanometer-scale X-ray point focus with two crossed multilayer Laue lenses: alignment challenges journal January 2017

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