Effect of rhizosphere enzymes on phytoremediation in PAH-contaminated soil using five plant species

A pot experiment was performed to study the effectiveness of remediation using different plant species and the enzyme response involved in remediating PAH-contaminated soil. The study indicated that species Echinacea purpurea, Festuca arundinacea Schred, Fire Phoenix (a combined F. arundinacea), and...

Full description

Saved in:
Bibliographic Details
Published in:PloS one 2015-03, Vol.10 (3), p.e0120369-e0120369
Main Authors: Liu, Rui, Dai, Yuanyuan, Sun, Libo
Format: Article
Language:English
Subjects:
Alfalfa
Alkaline phosphatase
Alkaline Phosphatase - metabolism
Biodegradation, Environmental
Bioremediation
Catechol Oxidase - metabolism
Chemical reactions
Contaminants
Correlation
Cultivation
Ecology
Environmental engineering
Environmental science
Enzymes
Experiments
Grasses
Laboratories
Microorganisms
Nitrogen - metabolism
Nitrogen content
Oil fields
Organic chemicals
Organic contaminants
Organic soils
Oxidases
Oxidoreductases - metabolism
Phosphorus
Phosphorus - metabolism
Phytoremediation
Plant Roots - enzymology
Plant Roots - metabolism
Plant Roots - microbiology
Plant species
Plants - enzymology
Plants - metabolism
Plants - microbiology
Pollution
Polycyclic aromatic hydrocarbons
Polycyclic Aromatic Hydrocarbons - metabolism
Polyphenol oxidase
Remediation
Rhizosphere
Sediment pollution
Soil - chemistry
Soil contamination
Soil Pollutants - metabolism
Soil pollution
Soil remediation
Soil sciences
Soils
Species
Urease
Urease - metabolism
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:A pot experiment was performed to study the effectiveness of remediation using different plant species and the enzyme response involved in remediating PAH-contaminated soil. The study indicated that species Echinacea purpurea, Festuca arundinacea Schred, Fire Phoenix (a combined F. arundinacea), and Medicago sativa L. possess the potential for remediation in PAH-contaminated soils. The study also determined that enzymatic reactions of polyphenol oxidase (except Fire Phoenix), dehydrogenase (except Fire Phoenix), and urease (except Medicago sativa L.) were more prominent over cultivation periods of 60d and 120d than 150d. Urease activity of the tested species exhibited prominently linear negative correlations with alkali-hydrolyzable nitrogen content after the tested plants were cultivated for 150d (R2 = 0.9592). The experiment also indicated that alkaline phosphatase activity in four of the five tested species (Echinacea purpurea, Callistephus chinensis, Festuca arundinacea Schred and Fire Phoenix) was inhibited during the cultivation process (at 60d and 120d). At the same time, the study determined that the linear relationship between alkaline phosphatase activity and effective phosphorus content in plant rhizosphere soil exhibited a negative correlation after a growing period of 120d (R2 = 0.665). Phytoremediation of organic contaminants in the soil was closely related to specific characteristics of particular plant species, and the catalyzed reactions were the result of the action of multiple enzymes in the plant rhizosphere soil.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0120369