Abstract
Concentrations of atmospheric carbon dioxide have been continuously increasing, and more investigations are needed in regard to the responses of various plants to the corresponding climatic conditions. In particular, potential variations in phytoremediation efficiency induced by global warming have rarely been investigated. Objective of this research was to evaluate the changes in phytoremediation efficiency of Noccaea caerulescens exposed to different concentrations of CO2. The concentrations of CO2 in the elevated CO2 treatments were adjusted to 550 ± 50 ppm to match the level of atmospheric CO2 predicted in 2050–2070. Compared to ambient controls (400 ppm), biomass yields and metal concentrations of N. caerulescens increased under elevated CO2 conditions, thus indicating that the phytoremediation efficiency of the species could increase in higher CO2 environment. In addition, water soluble and exchangeable Pb and Cu concentrations in soils decreased under elevated CO2 conditions, which reduced the leaching risks of the metals. The concentrations of malondialdehyde (MDA) of N. caerulescens decreased to different degrees with the increased CO2 concentrations. The overall findings suggested that elevations in CO2 can reduce the oxidative damage caused by metals in this species. The phytoremediation efficiency of N. caerulescens grown in multiple metal-enriched soils could be enhanced with global warming.
| Original language | English |
|---|---|
| Article number | 113169 |
| Journal | Environmental Pollution |
| Volume | 255 |
| DOIs | |
| Publication status | Published - 2019 Dec 1 |
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Keywords
- Bioavailability
- Green and sustainable remediation
- Hyperaccumulator
- Phytoavailability
- Phytomanagement
- Soil remediation
ASJC Scopus subject areas
- Toxicology
- Pollution
- Health, Toxicology and Mutagenesis
Cite this
Effects of elevated CO2 on the phytoremediation efficiency of Noccaea caerulescens. / Luo, Jie; Yang, Ge; Igalavithana, Avanthi Deshani; He, Wenxiang; Gao, Bin; Tsang, Daniel C.W.; Ok, Yong Sik.
In: Environmental Pollution, Vol. 255, 113169, 01.12.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of elevated CO2 on the phytoremediation efficiency of Noccaea caerulescens
AU - Luo, Jie
AU - Yang, Ge
AU - Igalavithana, Avanthi Deshani
AU - He, Wenxiang
AU - Gao, Bin
AU - Tsang, Daniel C.W.
AU - Ok, Yong Sik
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Concentrations of atmospheric carbon dioxide have been continuously increasing, and more investigations are needed in regard to the responses of various plants to the corresponding climatic conditions. In particular, potential variations in phytoremediation efficiency induced by global warming have rarely been investigated. Objective of this research was to evaluate the changes in phytoremediation efficiency of Noccaea caerulescens exposed to different concentrations of CO2. The concentrations of CO2 in the elevated CO2 treatments were adjusted to 550 ± 50 ppm to match the level of atmospheric CO2 predicted in 2050–2070. Compared to ambient controls (400 ppm), biomass yields and metal concentrations of N. caerulescens increased under elevated CO2 conditions, thus indicating that the phytoremediation efficiency of the species could increase in higher CO2 environment. In addition, water soluble and exchangeable Pb and Cu concentrations in soils decreased under elevated CO2 conditions, which reduced the leaching risks of the metals. The concentrations of malondialdehyde (MDA) of N. caerulescens decreased to different degrees with the increased CO2 concentrations. The overall findings suggested that elevations in CO2 can reduce the oxidative damage caused by metals in this species. The phytoremediation efficiency of N. caerulescens grown in multiple metal-enriched soils could be enhanced with global warming.
AB - Concentrations of atmospheric carbon dioxide have been continuously increasing, and more investigations are needed in regard to the responses of various plants to the corresponding climatic conditions. In particular, potential variations in phytoremediation efficiency induced by global warming have rarely been investigated. Objective of this research was to evaluate the changes in phytoremediation efficiency of Noccaea caerulescens exposed to different concentrations of CO2. The concentrations of CO2 in the elevated CO2 treatments were adjusted to 550 ± 50 ppm to match the level of atmospheric CO2 predicted in 2050–2070. Compared to ambient controls (400 ppm), biomass yields and metal concentrations of N. caerulescens increased under elevated CO2 conditions, thus indicating that the phytoremediation efficiency of the species could increase in higher CO2 environment. In addition, water soluble and exchangeable Pb and Cu concentrations in soils decreased under elevated CO2 conditions, which reduced the leaching risks of the metals. The concentrations of malondialdehyde (MDA) of N. caerulescens decreased to different degrees with the increased CO2 concentrations. The overall findings suggested that elevations in CO2 can reduce the oxidative damage caused by metals in this species. The phytoremediation efficiency of N. caerulescens grown in multiple metal-enriched soils could be enhanced with global warming.
KW - Bioavailability
KW - Green and sustainable remediation
KW - Hyperaccumulator
KW - Phytoavailability
KW - Phytomanagement
KW - Soil remediation
UR - http://www.scopus.com/inward/record.url?scp=85072158108&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072158108&partnerID=8YFLogxK
U2 - 10.1016/j.envpol.2019.113169
DO - 10.1016/j.envpol.2019.113169
M3 - Article
C2 - 31539847
AN - SCOPUS:85072158108
VL - 255
JO - Environmental Pollution
JF - Environmental Pollution
SN - 0269-7491
M1 - 113169
ER -