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Title: A (Sub)Micro-Scale Investigation of Fe Plaque Distribution in Selected Wetland Plant Root Epidermis

Abstract

This study focuses on investigation of the distribution of Fe plaque in the root epidermis of the selected wetland plant species (Phragmites australis, Typha latifolia and Spartina alterniflora) using synchrotron X-ray microfluoresces, X-ray absorption near edge structure and transmission X-ray microscope techniques with (sub)micro-scale resolution. The wetland plants were collected in Liberty State Park, New Jersey, USA, and Yangtze River intertidal zone, Shanghai, China, respectively, during the different time period. Although a number of early studies have reported that Fe-oxides can precipitate on the surface of aquatic plants in the rhizosphere to form iron plaque, the role of Fe plaque in regulating metal biogeochemical cycle has been in discussion for decades. The results from this study show that Fe is mainly distributed in the epidermis non-uniformly, and the major Fe species is ferric Fe (Fe3+). This information is needed to make broad inferences about the relevant plant metal uptake mechanisms because Fe accumulation and distribution in the root system is important to understanding the metal transport processes that control the mobility of metals in plants. This study improves our understanding of Fe plaque distributions and speciation in the wetland plant root system, and helps us to understand the function ofmore » Fe plaque in metal transport and accumulation through the root system.« less

Authors:
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (SC-21)
OSTI Identifier:
1439447
Report Number(s):
BNL-205717-2018-BOOK
DOE Contract Number:  
SC0012704
Resource Type:
Book
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Feng, Huan. A (Sub)Micro-Scale Investigation of Fe Plaque Distribution in Selected Wetland Plant Root Epidermis. United States: N. p., 2017. Web.
Feng, Huan. A (Sub)Micro-Scale Investigation of Fe Plaque Distribution in Selected Wetland Plant Root Epidermis. United States.
Feng, Huan. Fri . "A (Sub)Micro-Scale Investigation of Fe Plaque Distribution in Selected Wetland Plant Root Epidermis". United States. https://www.osti.gov/servlets/purl/1439447.
@article{osti_1439447,
title = {A (Sub)Micro-Scale Investigation of Fe Plaque Distribution in Selected Wetland Plant Root Epidermis},
author = {Feng, Huan},
abstractNote = {This study focuses on investigation of the distribution of Fe plaque in the root epidermis of the selected wetland plant species (Phragmites australis, Typha latifolia and Spartina alterniflora) using synchrotron X-ray microfluoresces, X-ray absorption near edge structure and transmission X-ray microscope techniques with (sub)micro-scale resolution. The wetland plants were collected in Liberty State Park, New Jersey, USA, and Yangtze River intertidal zone, Shanghai, China, respectively, during the different time period. Although a number of early studies have reported that Fe-oxides can precipitate on the surface of aquatic plants in the rhizosphere to form iron plaque, the role of Fe plaque in regulating metal biogeochemical cycle has been in discussion for decades. The results from this study show that Fe is mainly distributed in the epidermis non-uniformly, and the major Fe species is ferric Fe (Fe3+). This information is needed to make broad inferences about the relevant plant metal uptake mechanisms because Fe accumulation and distribution in the root system is important to understanding the metal transport processes that control the mobility of metals in plants. This study improves our understanding of Fe plaque distributions and speciation in the wetland plant root system, and helps us to understand the function of Fe plaque in metal transport and accumulation through the root system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {9}
}

Book:
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