PMID- 33164811
OWN - NLM
STAT- MEDLINE
DCOM- 20210603
LR  - 20210603
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 196
DP  - 2021 May
TI  - Non-targeted metabolomics reveal the impact of phenanthrene stress on root 
      exudates of ten urban greening tree species.
PG  - 110370
LID - S0013-9351(20)31267-6 [pii]
LID - 10.1016/j.envres.2020.110370 [doi]
AB  - Different root exudations can modify the bioavailability of persistent organic 
      pollutants (POPs). Among these exudations, the low molecular weight organic acids 
      play an imperative role in this process. The study was conducted to analyze the 
      effect of phenanthrene (PHE) stress on root exudation variations and changes in 
      its chemical composition in ten urban greening tree species, namely Loropetalum 
      chinense, Gardenia ellis, Photinia fraseri, Ligustrum japonicum, Rhododendron 
      simsii, Osmanthus fragrans, Gardenia jasminoides, Buxus sinica, Camellia 
      sasanqua, and Euonymus japonicas. The experiment was carried out in three PHE 
      concentration treatments (0 mg kg(-1) (CK), 200 mg kg(-1) (PHE(L)), 
      2000 mg kg(-1) (PHE(H))). The root exudates were collected and analyzed by GC-MS 
      method. In total, 673 compounds were identified either with high or low abundance 
      among all species and treatments. Compounds identified in CK, PHE(L), and PHE(H) 
      were 240, 180, and 256, respectively. The results illustrated that carbohydrates, 
      phenols, and esters were the dominant compounds, accounted for more than 92%. 
      Principal component analysis depicted that tree species grown in PHE(H) showed 
      obvious alteration in compounds of root exudation, whereas little difference was 
      noticed between PHE(L) and CK. Phenols (80%) were the most abundant, while 
      nitriles contributed a small portion. Moreover, among all species, R. simsii 
      released the maximum number of compounds, and L. japonicum released the least 
      number of compounds accounting for 89 and 46, respectively. The results achieved 
      here to illustrate that plant type, and PHE stress can significantly change the 
      concentrations and species of root exudates. This study provides the scientific 
      reference for understanding the phenanthrene responsive changes in root exudates 
      and phytoremediation of polycyclic aromatic hydrocarbons (PAHs), as well as a 
      screening of urban greening tree species.
CI  - Copyright (c) 2020 Elsevier Inc. All rights reserved.
FAU - Wang, Jiaolong
AU  - Wang J
AD  - College of Life Science and Technology, Central South University of Forestry and 
      Technology, Changsha, 410004, Hunan Province, PR China.
FAU - Farooq, Taimoor Hassan
AU  - Farooq TH
AD  - College of Life Science and Technology, Central South University of Forestry and 
      Technology, Changsha, 410004, Hunan Province, PR China; National Engineering 
      Laboratory for Applied Technology of Forestry and Ecology in South China, 
      Changsha, 410004, Hunan Province, PR China.
FAU - Aslam, Ali
AU  - Aslam A
AD  - Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, 
      Zhengzhou, Henan, China.
FAU - Shakoor, Awais
AU  - Shakoor A
AD  - Department of Environment and Soil Sciences, University of Lleida, Avinguda 
      Alcalde Rovira Roure 191, 25198, Lleida, Spain.
FAU - Chen, Xiaoyong
AU  - Chen X
AD  - College of Life Science and Technology, Central South University of Forestry and 
      Technology, Changsha, 410004, Hunan Province, PR China; College of Arts and 
      Sciences, Governors State University, University Park, IL, 60484, USA. Electronic 
      address: XChen@govst.edu.
FAU - Yan, Wende
AU  - Yan W
AD  - College of Life Science and Technology, Central South University of Forestry and 
      Technology, Changsha, 410004, Hunan Province, PR China; National Engineering 
      Laboratory for Applied Technology of Forestry and Ecology in South China, 
      Changsha, 410004, Hunan Province, PR China. Electronic address: 
      csfuywd@hotmail.com.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20201022
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - 0 (Phenanthrenes)
RN  - 0 (Soil Pollutants)
SB  - IM
MH  - Biodegradation, Environmental
MH  - Exudates and Transudates
MH  - Metabolomics
MH  - *Phenanthrenes
MH  - Plant Roots
MH  - *Soil Pollutants
MH  - Trees
OTO - NOTNLM
OT  - Phytoremediation
OT  - Pollutants
OT  - Polycyclic aromatic hydrocarbons
OT  - Rhizosphere
OT  - Root exudation
EDAT- 2020/11/10 06:00
MHDA- 2021/06/04 06:00
CRDT- 2020/11/09 13:52
PHST- 2020/06/22 00:00 [received]
PHST- 2020/09/21 00:00 [revised]
PHST- 2020/10/20 00:00 [accepted]
PHST- 2020/11/10 06:00 [pubmed]
PHST- 2021/06/04 06:00 [medline]
PHST- 2020/11/09 13:52 [entrez]
AID - S0013-9351(20)31267-6 [pii]
AID - 10.1016/j.envres.2020.110370 [doi]
PST - ppublish
SO  - Environ Res. 2021 May;196:110370. doi: 10.1016/j.envres.2020.110370. Epub 2020 
      Oct 22.