Abstract
This study focuses on investigation of the distribution of Fe plaque in the root epidermis of selected wetland plant species (Phragmites australis, Typha latifolia and Spartina alterniflora) using synchrotron X-ray microfluoresces, X-ray absorption near edge structure and transmission Xray 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, during different time period. Although a number of early studies have reported that Fe-oxides can precipitate on surface of aquatic plants in 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 metal transport processes that control the mobility of metals in plants. This study improves our current knowledge 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.
| Original language | English |
|---|---|
| Title of host publication | Trace Metals |
| Subtitle of host publication | Evolution, Environmental and Ecological Significance |
| Publisher | Nova Science Publishers, Inc. |
| Pages | 57-73 |
| Number of pages | 17 |
| ISBN (Electronic) | 9781536124101 |
| ISBN (Print) | 9781536124033 |
| State | Published - 1 Jan 2017 |
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Keywords
- Iron plaque
- Rhizosphere
- Root epidermis
- Synchrotron X-ray radiation technique
- Wetland plant
Cite this
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A (sub)micro-scale investigation of Fe plaque distribution in a selected wetland plant root epidermis. / Feng, Huan; Zhang, Weiguo; Wang, Jia Jun; Qian, Yu; Gallagher, Frank J.; Yu, Lizhong; Liu, Wenliang; Liu, Houjun; Li, Yuanyi; Mahajan, Manoj D.; Wang, Jun; Eng, Christopher; Jones, Keith W.; Liu, Chang Jun; Tappero, Ryan.
Trace Metals: Evolution, Environmental and Ecological Significance. Nova Science Publishers, Inc., 2017. p. 57-73.Research output: Chapter in Book/Report/Conference proceeding › Chapter › Research › peer-review
TY - CHAP
T1 - A (sub)micro-scale investigation of Fe plaque distribution in a selected wetland plant root epidermis
AU - Feng, Huan
AU - Zhang, Weiguo
AU - Wang, Jia Jun
AU - Qian, Yu
AU - Gallagher, Frank J.
AU - Yu, Lizhong
AU - Liu, Wenliang
AU - Liu, Houjun
AU - Li, Yuanyi
AU - Mahajan, Manoj D.
AU - Wang, Jun
AU - Eng, Christopher
AU - Jones, Keith W.
AU - Liu, Chang Jun
AU - Tappero, Ryan
PY - 2017/1/1
Y1 - 2017/1/1
N2 - This study focuses on investigation of the distribution of Fe plaque in the root epidermis of selected wetland plant species (Phragmites australis, Typha latifolia and Spartina alterniflora) using synchrotron X-ray microfluoresces, X-ray absorption near edge structure and transmission Xray 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, during different time period. Although a number of early studies have reported that Fe-oxides can precipitate on surface of aquatic plants in 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 metal transport processes that control the mobility of metals in plants. This study improves our current knowledge 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.
AB - This study focuses on investigation of the distribution of Fe plaque in the root epidermis of selected wetland plant species (Phragmites australis, Typha latifolia and Spartina alterniflora) using synchrotron X-ray microfluoresces, X-ray absorption near edge structure and transmission Xray 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, during different time period. Although a number of early studies have reported that Fe-oxides can precipitate on surface of aquatic plants in 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 metal transport processes that control the mobility of metals in plants. This study improves our current knowledge 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.
KW - Iron plaque
KW - Rhizosphere
KW - Root epidermis
KW - Synchrotron X-ray radiation technique
KW - Wetland plant
UR - http://www.scopus.com/inward/record.url?scp=85035103027&partnerID=8YFLogxK
M3 - Chapter
SN - 9781536124033
SP - 57
EP - 73
BT - Trace Metals
PB - Nova Science Publishers, Inc.
ER -