PMID- 16716944
OWN - NLM
STAT- MEDLINE
DCOM- 20060712
LR  - 20131121
IS  - 1389-1723 (Print)
IS  - 1347-4421 (Linking)
VI  - 101
IP  - 4
DP  - 2006 Apr
TI  - Accelerated aromatic compounds degradation in aquatic environment by use of 
      interaction between Spirodela polyrrhiza and bacteria in its rhizosphere.
PG  - 346-53
AB  - Accelerated degradation of organic chemicals by aquatic plant-bacterial 
      associations was reported for the first time with elucidation of the role and 
      contribution of aquatic plant and bacteria in its rhizosphere using a 
      fast-growing giant duckweed, Spirodela polyrrhiza. The results clearly showed the 
      accelerated degradation of all the three aromatic compounds (phenol, aniline and 
      2,4-dichlorophenol [2,4-DCP]) tested by aquatic plant-bacterial associations. In 
      phenol degradation system, phenol-degrading bacteria indigenous to the 
      rhizosphere fraction of S. polyrrhiza mainly contributed, while in aniline 
      degradation system S. polyrrhiza mainly contributed by stimulating 
      aniline-degrading bacteria both in the rhizosphere and balk water fraction. On 
      the other hand in 2,4-DCP degradation system, S. polyrrhiza itself mainly 
      contributed to its removal by uptake and degradation. Thus, the mechanisms for 
      accelerated removal of aromatic compounds were quite different depending on the 
      substrates. S. polyrrhiza showed selective accumulation of phenol-degrading 
      bacteria in its rhizosphere fraction, while aniline- and 2,4-DCP-degrading 
      bacteria were not much accumulated. S. polyrrhiza secreted peroxidase and 
      laccase. However, both of the enzymatic activities increased with the addition of 
      aromatic compounds, degrading ability of S. polyrrhiza itself should be owing to 
      the production of peroxidase rather than laccase because the change of peroxidase 
      activity and concentration of each aromatic compound well concurred. From the 
      results obtained in the present study, it can be concluded that the feasibility 
      of the use of aquatic plant-bacterial associations to accelerate the degradation 
      of organic chemicals especially recalcitrant compounds in aquatic environment was 
      shown.
FAU - Toyama, Tadashi
AU  - Toyama T
AD  - Division of Sustainable Energy and Environmental Engineering, Graduate School of 
      Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. 
      toyama@wb.env.eng.osaka-u.ac.jp
FAU - Yu, Ning
AU  - Yu N
FAU - Kumada, Hirohide
AU  - Kumada H
FAU - Sei, Kazunari
AU  - Sei K
FAU - Ike, Michihiko
AU  - Ike M
FAU - Fujita, Masanori
AU  - Fujita M
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Japan
TA  - J Biosci Bioeng
JT  - Journal of bioscience and bioengineering
JID - 100888800
RN  - 0 (Aniline Compounds)
RN  - 0 (Chlorophenols)
RN  - 0 (Enzymes)
RN  - 0 (Phenols)
RN  - 059QF0KO0R (Water)
RN  - 339NCG44TV (Phenol)
RN  - EC 1.10.3.2 (Laccase)
RN  - EC 1.11.1.- (Peroxidases)
RN  - R669TG1950 (2,4-dichlorophenol)
RN  - SIR7XX2F1K (aniline)
SB  - IM
MH  - Aniline Compounds/chemistry
MH  - Biodegradation, Environmental
MH  - Biotechnology/methods
MH  - Chlorophenols/chemistry
MH  - Enzymes/chemistry
MH  - Laccase/chemistry
MH  - Peroxidases/chemistry
MH  - Phenol/chemistry
MH  - Phenols/chemistry
MH  - Plants/*metabolism/microbiology
MH  - Soil Microbiology
MH  - Substrate Specificity
MH  - Time Factors
MH  - Water/chemistry
EDAT- 2006/05/24 09:00
MHDA- 2006/07/13 09:00
CRDT- 2006/05/24 09:00
PHST- 2005/11/24 00:00 [received]
PHST- 2006/01/24 00:00 [accepted]
PHST- 2006/05/24 09:00 [pubmed]
PHST- 2006/07/13 09:00 [medline]
PHST- 2006/05/24 09:00 [entrez]
AID - S1389-1723(06)70592-8 [pii]
AID - 10.1263/jbb.101.346 [doi]
PST - ppublish
SO  - J Biosci Bioeng. 2006 Apr;101(4):346-53. doi: 10.1263/jbb.101.346.