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

Huan Feng, Yu Qian, J. Kirk Cochran, Qingzhi Zhu, Wen Hu, Hanfei Yan, Li Li, Xiaojing Huang, Yong S. Chu, Houjun Liu, Shinjae Yoo, Chang Jun Liu

Research output: Contribution to journalArticle

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Abstract

This paper 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.

Original languageEnglish
Article number40420
JournalScientific Reports
Volume7
DOIs
StatePublished - 18 Jan 2017

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Trace Elements
Epidermis
Jamaica
Synchrotrons
Wetlands
Islands
Uncertainty
Salts
X-Rays

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Feng, Huan ; Qian, Yu ; Cochran, J. Kirk ; Zhu, Qingzhi ; Hu, Wen ; Yan, Hanfei ; Li, Li ; Huang, Xiaojing ; Chu, Yong S. ; Liu, Houjun ; Yoo, Shinjae ; Liu, Chang Jun. / Nanoscale measurement of trace element distributions in Spartina alterniflora root tissue during dormancy. In: Scientific Reports. 2017 ; Vol. 7.
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abstract = "This paper 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.",
author = "Huan Feng and Yu Qian and Cochran, {J. Kirk} and Qingzhi Zhu and Wen Hu and Hanfei Yan and Li Li and Xiaojing Huang and Chu, {Yong S.} and Houjun Liu and Shinjae Yoo and Liu, {Chang Jun}",
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Feng, H, Qian, Y, Cochran, JK, Zhu, Q, Hu, W, Yan, H, Li, L, Huang, X, Chu, YS, Liu, H, Yoo, S & Liu, CJ 2017, 'Nanoscale measurement of trace element distributions in Spartina alterniflora root tissue during dormancy', Scientific Reports, vol. 7, 40420. https://doi.org/10.1038/srep40420

Nanoscale measurement of trace element distributions in Spartina alterniflora root tissue during dormancy. / Feng, Huan; Qian, Yu; Cochran, J. Kirk; Zhu, Qingzhi; Hu, Wen; Yan, Hanfei; Li, Li; Huang, Xiaojing; Chu, Yong S.; Liu, Houjun; Yoo, Shinjae; Liu, Chang Jun.

In: Scientific Reports, Vol. 7, 40420, 18.01.2017.

Research output: Contribution to journalArticle

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AU - Yan, Hanfei

AU - Li, Li

AU - Huang, Xiaojing

AU - Chu, Yong S.

AU - Liu, Houjun

AU - Yoo, Shinjae

AU - Liu, Chang Jun

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AB - This paper 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.

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