Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:1.7.1.4 (
nitrite reductase
)
1,847
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
In the present study, we investigated the influence of
phenanthrene
(
PHE
), a three-ring polycyclic aromatic hydrocarbon (PAH) compound, on nitrate (NO
3
-
) reduction processes in mangrove sediments using microcosms. After 10days, nitrate/
nitrite reductase
activity and abundance of narG and nirS significantly decreased in the bulk sediment at both 10/50mgPHEkg
-1
contamination groups. In the rhizosphere, abundance of narG, nirS and nirK markedly declined at
PHE
treated sediments, while the drop in reductase activity at 10mgkg
-1
PHE
treatment was insignificant. After 50days, apart from 10mgPhekg
-1
treated bulk sediment, abundance of denitrifiers and reductase activity in all
PHE
spiked sediment samples significantly dropped. Therefore, the influence of PAHs on NO
3
-
reduction capability in mangrove sediments is dependent on spiked concentration, temporal scale of exposure and interaction with roots. Generally, PAHs play an inhibitor role, slowing NO
3
-
turnover rates, which warrant attention from coastal managers.
...
PMID:Influence of polycyclic aromatic hydrocarbons on nitrate reduction capability in mangrove sediments. 2871 76
