PMID- 17562463
OWN - NLM
STAT- MEDLINE
DCOM- 20070917
LR  - 20131121
IS  - 0360-1234 (Print)
IS  - 0360-1234 (Linking)
VI  - 42
IP  - 5
DP  - 2007 Jun-Jul
TI  - Effects of 2,4-dichlorophenol, pentachlorophenol and vegetation on microbial 
      characteristics in a heavy metal polluted soil.
PG  - 551-7
AB  - The aim of this study was to evaluate the soil microbial characteristics in 
      historically heavy-metal polluted soil, which was also affected by organic 
      co-contaminants, 2,4-dichlorophenol or pentachlorophenol, which often occur due 
      to the conventional use of pesticides. It was observed that the normalized 
      microbial biomass (microbial biomass per unit soil organic C) of the contaminated 
      soil was very low, less than 1% in both non-planted and ryegrass planted soil, 
      and showed a decreasing trend with the treatment of organic co-contaminants. The 
      microbial biomass and substrate-induced respiration (SIR) in the ryegrass planted 
      soil were much larger, as compared with the non-planted soil with or without 
      organic pollutants. The different resistant bacterial community and its 
      physiological diversity in the rhizosphere further suggested that the effect of 
      vegetation on microbial activity was not just a general increase in the mass or 
      activity of pre-existing microorganisms, but rather acted selectively on 
      microbial growth so that the relative abundance of different microbial groups in 
      soil was changed. In sum, high concentrations of organic co-contaminants, 
      especially pentachlorophenol (PCP), could strengthen the deterioration of 
      microbial ecology. The adverse effect of heavy metal-organic pollutants on the 
      soil microbial biomass and activity might be the reason for the slow degradation 
      of PCP that has high chlorinated and high toxicity. Vegetation might be the 
      efficient way to assist in improving and restoring the utilization of 
      agricultural ecosystems. The beneficial microbial effect of vegetation could 
      cause the rapid dissipation of 2,4-dichlorophenol (2,4-DCP) that has less 
      chlorinated and less toxicity in the planted soils.
FAU - Lin, Qi
AU  - Lin Q
AD  - Department of Environmental Engineering, Zhejiang University, Zhejiang, People's 
      Republic of China. linqi@zju.edu.cn
FAU - Zhao, Hong M
AU  - Zhao HM
FAU - Chen, Ying X
AU  - Chen YX
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Environ Sci Health B
JT  - Journal of environmental science and health. Part. B, Pesticides, food 
      contaminants, and agricultural wastes
JID - 7607167
RN  - 0 (Environmental Pollutants)
RN  - 0 (Metals, Heavy)
RN  - 0 (Soil Pollutants)
RN  - D9BSU0SE4T (Pentachlorophenol)
RN  - Q13SKS21MN (2,4-Dinitrophenol)
SB  - IM
MH  - 2,4-Dinitrophenol/toxicity
MH  - Biodegradation, Environmental
MH  - Biomass
MH  - Drug Synergism
MH  - Environmental Monitoring
MH  - Environmental Pollutants/*analysis
MH  - Environmental Pollution/*analysis
MH  - Kinetics
MH  - Lolium/drug effects/*growth & development/metabolism
MH  - Metals, Heavy/*toxicity
MH  - Pentachlorophenol/toxicity
MH  - *Soil Microbiology
MH  - Soil Pollutants
EDAT- 2007/06/15 09:00
MHDA- 2007/09/18 09:00
CRDT- 2007/06/15 09:00
PHST- 2007/06/15 09:00 [pubmed]
PHST- 2007/09/18 09:00 [medline]
PHST- 2007/06/15 09:00 [entrez]
AID - 779484495 [pii]
AID - 10.1080/03601230701391658 [doi]
PST - ppublish
SO  - J Environ Sci Health B. 2007 Jun-Jul;42(5):551-7. doi: 10.1080/03601230701391658.