PMID- 15843928
OWN - NLM
STAT- MEDLINE
DCOM- 20060808
LR  - 20131121
IS  - 0175-7598 (Print)
IS  - 0175-7598 (Linking)
VI  - 69
IP  - 2
DP  - 2005 Nov
TI  - Production of extracellular polymeric substances from Rhodopseudomonas acidophila 
      in the presence of toxic substances.
PG  - 216-22
AB  - A hydrogen-producing photosynthetic bacteria strain, Rhodopseudomonas acidophila, 
      was used to investigate the production of extracellular polymeric substances 
      (EPS) in the presence of toxic substances and the effect of toxicants on 
      bacterial surface characteristics. Addition of the toxic substances including 
      Cu(II), Cr(VI), Cd(II) and 2,4-dichlorophenol (2,4-DCP) stimulated the production 
      of EPS but reduced the cell dry weight. At concentrations of 30 mg l(-1) Cu(II), 
      40 mg l(-1) Cr(VI), 5 mg l(-1) Cd(II) and 100 mg l(-1) 2,4-DCP, the EPS content 
      increased by 5.5, 2.5, 4.0 and 1.4 times, respectively, than the control. These 
      toxic substances also greatly influenced the proteins/carbohydrates ratio of EPS. 
      The ratios in the presence of toxic substances were always higher than that of 
      control. Furthermore, under toxic conditions, the increase in the protein content 
      far exceeded than that of others in EPS, suggesting that extracellular proteins 
      could protect cells against toxic substances. The toxic substances significantly 
      changed the surface characteristics and flocculation ability of R. acidophila, 
      such as surface energy, relative hydrophobicity and free energy of adhesion.
FAU - Sheng, Guo-Ping
AU  - Sheng GP
AD  - Laboratory of Environmental Biotechnology, School of Chemistry, University of 
      Science and Technology of China, Hefei, Anhui.
FAU - Yu, Han-Qing
AU  - Yu HQ
FAU - Yue, Zheng-Bo
AU  - Yue ZB
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20051112
PL  - Germany
TA  - Appl Microbiol Biotechnol
JT  - Applied microbiology and biotechnology
JID - 8406612
RN  - 0 (Biopolymers)
RN  - 0 (Chlorophenols)
RN  - 0 (Sewage)
RN  - 0 (Water Pollutants, Chemical)
RN  - 00BH33GNGH (Cadmium)
RN  - 0R0008Q3JB (Chromium)
RN  - 789U1901C5 (Copper)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Bacteria/growth & development
MH  - Bacterial Adhesion/physiology
MH  - Biopolymers/*biosynthesis/*chemistry
MH  - Cadmium/chemistry
MH  - Chlorophenols/chemistry
MH  - Chromium/chemistry
MH  - Copper/chemistry
MH  - Rhodopseudomonas/chemistry/growth & development/*metabolism
MH  - Sewage/*chemistry
MH  - Surface Properties
MH  - Thermodynamics
MH  - *Water Pollutants, Chemical
EDAT- 2005/04/22 09:00
MHDA- 2006/08/09 09:00
CRDT- 2005/04/22 09:00
PHST- 2004/12/08 00:00 [received]
PHST- 2005/03/31 00:00 [accepted]
PHST- 2005/03/24 00:00 [revised]
PHST- 2005/04/22 09:00 [pubmed]
PHST- 2006/08/09 09:00 [medline]
PHST- 2005/04/22 09:00 [entrez]
AID - 10.1007/s00253-005-1990-6 [doi]
PST - ppublish
SO  - Appl Microbiol Biotechnol. 2005 Nov;69(2):216-22. doi: 10.1007/s00253-005-1990-6. 
      Epub 2005 Nov 12.