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Surface colonization and activity of the 2,6-dichlorobenzamide (BAM) degrading Aminobacter sp. strain MSH1 at macro- and micropollutant BAM concentrations

Aswini Sekhar, Benjamin Horemans, Jens Aamand, Sebastian R Sørensen, Lynn Vanhaecke UGent, Julie Vanden Bussche UGent, Johan Hofkens and Dirk Springael (2016) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 50(18). p.10123-10133
abstract
Aminobacter sp. MSH1 uses the groundwater micropollutant 2,6-dichlorobenzamide (BAM) as a C and N source and is a potential catalyst for biotreatment of BAM-contaminated groundwater in filtration units of drinking water treatment plants (DWTPs). The oligotrophic environment of DWTPs including trace pollutant concentrations, and the high flow rates impose challenges for micropollutant biodegradation in DWTPs. To understand how trace BAM concentrations affect MSH1 surface colonization and BAM degrading activity, MSH1 was cultivated in flow channels fed continuously with BAM macro- and microconcentrations in a N- and C-limiting medium. At all BAM concentrations, MSH1 colonized the flow channel. BAM degradation efficiencies were concentration-dependent, ranging between 70 and 95%. Similarly, BAM concentration affected surface colonization, but at 100 mu g/L BAM and lower, colonization was similar to that in systems without BAM, suggesting that assimilable organic carbon and nitrogen other than those supplied by BAM sustained colonization at BAM microconcentrations. Comparison of specific BAM degradation rates in flow channels and in cultures of suspended freshly grown cells indicated that starvation conditions in flow channels receiving BAM microconcentrations resulted into MSH1 biomasses with 10-100-times reduced BAM degrading activity and provided a kinetic model for predicting BAM degradation under continuous C and N starvation.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
PERSISTENT METABOLITE 2, 6-DICHLOROBENZAMIDE, ASSIMILABLE ORGANIC-CARBON, HERBICIDE DICHLOBENIL, DRINKING-WATER, PSEUDOMONAS-AERUGINOSA, BIOFILM, DEGRADATION, MINERALIZATION, BIODEGRADATION, SOILS
journal title
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Environ. Sci. Technol.
volume
50
issue
18
pages
10123 - 10133
Web of Science type
Article
Web of Science id
000384037900039
JCR category
ENVIRONMENTAL SCIENCES
JCR impact factor
6.198 (2016)
JCR rank
12/229 (2016)
JCR quartile
1 (2016)
ISSN
0013-936X
1520-5851
DOI
10.1021/acs.est.6b01978
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8508061
handle
http://hdl.handle.net/1854/LU-8508061
date created
2017-02-07 14:22:33
date last changed
2017-04-05 12:53:07
@article{8508061,
  abstract     = {Aminobacter sp. MSH1 uses the groundwater micropollutant 2,6-dichlorobenzamide (BAM) as a C and N source and is a potential catalyst for biotreatment of BAM-contaminated groundwater in filtration units of drinking water treatment plants (DWTPs). The oligotrophic environment of DWTPs including trace pollutant concentrations, and the high flow rates impose challenges for micropollutant biodegradation in DWTPs. To understand how trace BAM concentrations affect MSH1 surface colonization and BAM degrading activity, MSH1 was cultivated in flow channels fed continuously with BAM macro- and microconcentrations in a N- and C-limiting medium. At all BAM concentrations, MSH1 colonized the flow channel. BAM degradation efficiencies were concentration-dependent, ranging between 70 and 95\%. Similarly, BAM concentration affected surface colonization, but at 100 mu g/L BAM and lower, colonization was similar to that in systems without BAM, suggesting that assimilable organic carbon and nitrogen other than those supplied by BAM sustained colonization at BAM microconcentrations. Comparison of specific BAM degradation rates in flow channels and in cultures of suspended freshly grown cells indicated that starvation conditions in flow channels receiving BAM microconcentrations resulted into MSH1 biomasses with 10-100-times reduced BAM degrading activity and provided a kinetic model for predicting BAM degradation under continuous C and N starvation.},
  author       = {Sekhar, Aswini and Horemans, Benjamin and Aamand, Jens and S{\o}rensen, Sebastian R and Vanhaecke, Lynn and Vanden Bussche, Julie and Hofkens, Johan and Springael, Dirk},
  issn         = {0013-936X},
  journal      = {ENVIRONMENTAL SCIENCE \& TECHNOLOGY},
  keyword      = {PERSISTENT METABOLITE 2,6-DICHLOROBENZAMIDE,ASSIMILABLE ORGANIC-CARBON,HERBICIDE DICHLOBENIL,DRINKING-WATER,PSEUDOMONAS-AERUGINOSA,BIOFILM,DEGRADATION,MINERALIZATION,BIODEGRADATION,SOILS},
  language     = {eng},
  number       = {18},
  pages        = {10123--10133},
  title        = {Surface colonization and activity of the 2,6-dichlorobenzamide (BAM) degrading Aminobacter sp. strain MSH1 at macro- and micropollutant BAM concentrations},
  url          = {http://dx.doi.org/10.1021/acs.est.6b01978},
  volume       = {50},
  year         = {2016},
}

Chicago
Sekhar, Aswini, Benjamin Horemans, Jens Aamand, Sebastian R Sørensen, Lynn Vanhaecke, Julie Vanden Bussche, Johan Hofkens, and Dirk Springael. 2016. “Surface Colonization and Activity of the 2,6-dichlorobenzamide (BAM) Degrading Aminobacter Sp. Strain MSH1 at Macro- and Micropollutant BAM Concentrations.” Environmental Science & Technology 50 (18): 10123–10133.
APA
Sekhar, A., Horemans, B., Aamand, J., Sørensen, S. R., Vanhaecke, L., Vanden Bussche, J., Hofkens, J., et al. (2016). Surface colonization and activity of the 2,6-dichlorobenzamide (BAM) degrading Aminobacter sp. strain MSH1 at macro- and micropollutant BAM concentrations. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 50(18), 10123–10133.
Vancouver
1.
Sekhar A, Horemans B, Aamand J, Sørensen SR, Vanhaecke L, Vanden Bussche J, et al. Surface colonization and activity of the 2,6-dichlorobenzamide (BAM) degrading Aminobacter sp. strain MSH1 at macro- and micropollutant BAM concentrations. ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2016;50(18):10123–33.
MLA
Sekhar, Aswini, Benjamin Horemans, Jens Aamand, et al. “Surface Colonization and Activity of the 2,6-dichlorobenzamide (BAM) Degrading Aminobacter Sp. Strain MSH1 at Macro- and Micropollutant BAM Concentrations.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 50.18 (2016): 10123–10133. Print.