Plants’ use of different nitrogen forms in response to crude oil contamination

In this study, we investigated Phragmites australis’ use of different forms of nitrogen (N) and associated soil N transformations in response to petroleum contamination. 15N tracer studies indicated that the total amount of inorganic and organic N assimilated by P. australis was low in petroleum-con...

Full description

Saved in:
Bibliographic Details
Published in:Environmental pollution (1987) 2011-01, Vol.159 (1), p.157-163
Main Authors: Nie, Ming, Lu, Meng, Yang, Qiang, Zhang, Xiao-Dong, Xiao, Ming, Jiang, Li-Fen, Yang, Ji, Fang, Chang-Ming, Chen, Jia-Kuan, Li, Bo
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Availability
Biodegradation, Environmental
Biological and medical sciences
Contamination
Crude oil
Ecotoxicology, biological effects of pollution
Fertilization
Fundamental and applied biological sciences. Psychology
mineralization
Nitrification
Nitrogen
Nitrogen - metabolism
nitrogen content
oils
petroleum
Petroleum - metabolism
Petroleum contamination
Phragmites australis
Poaceae - metabolism
Pollution abatement
soil
Soil (material)
Soil Pollutants - metabolism
Stable isotopes
Strategy
Transformations
Uptakes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, we investigated Phragmites australis’ use of different forms of nitrogen (N) and associated soil N transformations in response to petroleum contamination. 15N tracer studies indicated that the total amount of inorganic and organic N assimilated by P. australis was low in petroleum-contaminated soil, while the rates of inorganic and organic N uptake on a per-unit-biomass basis were higher in petroleum-contaminated soil than those in un-contaminated soil. The percentage of organic N in total plant-assimilated N increased with petroleum concentration. In addition, high gross N immobilization and nitrification rates relative to gross N mineralization rate might reduce inorganic-N availability to the plants. Therefore, the enhanced rate of N uptake and increased importance of organic N in plant N assimilation might be of great significance to plants growing in petroleum-contaminated soils. Our results suggest that plants might regulate N capture under petroleum contamination. Plant strategies of utilizing nitrogen in crude oil-contaminated soils.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2010.09.013