PMID- 25218779
OWN - NLM
STAT- MEDLINE
DCOM- 20150914
LR  - 20181202
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 117
DP  - 2014 Dec
TI  - Synthesis of novel palladium(0) nanocatalysts by microorganisms from 
      heavy-metal-influenced high-alpine sites for dehalogenation of polychlorinated 
      dioxins.
PG  - 462-70
LID - S0045-6535(14)00890-X [pii]
LID - 10.1016/j.chemosphere.2014.07.030 [doi]
AB  - In a search for new aqueous-phase systems for catalyzing reactions of 
      environmental and industrial importance, we prepared novel biogenerated palladium 
      (Pd) nanocatalysts using a "green" approach based on microorganisms isolated from 
      high-alpine sites naturally impacted by heavy metals. Bacteria and fungi were 
      enriched and isolated from serpentinite-influenced ponds (Totalp region, Parsenn, 
      near Davos, Graubunden, Switzerland). Effects on growth dynamics were monitored 
      using an automated assay in 96-well microtiter plates, which allowed for 
      simultaneous cultivation and on-line analysis of Pd(II)- and Ni(II)-mediated 
      growth inhibition. Microorganisms from Totalp ponds tolerated up to 3mM Pd(II) 
      and bacterial isolates were selected for cultivation and reductive synthesis of 
      Pd(0) nanocatalysts at microbial interfaces. During reduction of Pd(II) with 
      formate as the electron donor, Pd(0) nanoparticles were formed and deposited in 
      the cell envelope. The Pd(0) catalysts produced in the presence of 
      Pd(II)-tolerant Alpine Pseudomonas species were catalytically active in the 
      reductive dehalogenation of model polychlorinated dioxin congeners. This is the 
      first report which shows that Pd(0) synthesized in the presence of microorganisms 
      catalyzes the reductive dechlorination of polychlorinated dibenzo-p-dioxins 
      (PCDDs). Because the "bioPd(0)" catalyzed the dechlorination reactions preferably 
      via non-lateral chlorinated intermediates, such a pathway could potentially 
      detoxify PCDDs via a "safe route". It remains to be determined whether the 
      microbial formation of catalytically active metal catalysts (e.g., Zn, Ni, Fe) 
      occurs in situ and whether processes involving such catalysts can alter the fate 
      and transport of persistent organic pollutants (POPs) in Alpine habitats.
CI  - Copyright (c) 2014 Elsevier Ltd. All rights reserved.
FAU - Schluter, Michael
AU  - Schluter M
AD  - Institute of Applied Microbiology, Research Centre for BioSystems, Land Use, and 
      Nutrition (IFZ), Justus-Liebig-Universitat Giessen, Germany.
FAU - Hentzel, Thomas
AU  - Hentzel T
AD  - Institute of Applied Microbiology, Research Centre for BioSystems, Land Use, and 
      Nutrition (IFZ), Justus-Liebig-Universitat Giessen, Germany.
FAU - Suarez, Christian
AU  - Suarez C
AD  - Institute of Applied Microbiology, Research Centre for BioSystems, Land Use, and 
      Nutrition (IFZ), Justus-Liebig-Universitat Giessen, Germany.
FAU - Koch, Mandy
AU  - Koch M
AD  - Institute of Chemistry, Research Group Food and Environmental Chemistry, 
      Martin-Luther-Universitat Halle-Wittenberg, Germany.
FAU - Lorenz, Wilhelm G
AU  - Lorenz WG
AD  - Institute of Chemistry, Research Group Food and Environmental Chemistry, 
      Martin-Luther-Universitat Halle-Wittenberg, Germany.
FAU - Bohm, Leonard
AU  - Bohm L
AD  - Institute of Soil Science and Soil Conservation, Research Centre for BioSystems, 
      Land Use, and Nutrition (IFZ), Justus-Liebig-Universitat Giessen, Germany.
FAU - During, Rolf-Alexander
AU  - During RA
AD  - Institute of Soil Science and Soil Conservation, Research Centre for BioSystems, 
      Land Use, and Nutrition (IFZ), Justus-Liebig-Universitat Giessen, Germany.
FAU - Koinig, Karin A
AU  - Koinig KA
AD  - Institute of Ecology, Universitat Innsbruck, Austria.
FAU - Bunge, Michael
AU  - Bunge M
AD  - Institute of Applied Microbiology, Research Centre for BioSystems, Land Use, and 
      Nutrition (IFZ), Justus-Liebig-Universitat Giessen, Germany. Electronic address: 
      michael.bunge@umwelt.uni-giessen.de.
LA  - eng
SI  - GENBANK/KM357351
SI  - GENBANK/KM357352
SI  - GENBANK/KM357353
SI  - GENBANK/KM357354
SI  - GENBANK/KM357355
SI  - GENBANK/KM357356
SI  - GENBANK/KM357357
SI  - GENBANK/KM357358
SI  - GENBANK/KM357359
SI  - GENBANK/KM357360
SI  - GENBANK/KM357361
SI  - GENBANK/KM357362
SI  - GENBANK/KM357363
SI  - GENBANK/KM357364
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20140919
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (DNA, Bacterial)
RN  - 0 (DNA, Fungal)
RN  - 0 (DNA, Intergenic)
RN  - 0 (Dioxins)
RN  - 0 (RNA, Ribosomal, 16S)
RN  - 0 (Soil Pollutants)
RN  - 5TWQ1V240M (Palladium)
SB  - IM
MH  - Bacteria/genetics/*metabolism
MH  - Biocatalysis
MH  - DNA, Bacterial/genetics
MH  - DNA, Fungal/genetics
MH  - DNA, Intergenic/genetics
MH  - Dioxins/*metabolism
MH  - Fungi/genetics/*metabolism
MH  - Metal Nanoparticles/*analysis
MH  - Molecular Sequence Data
MH  - Palladium/*metabolism
MH  - Phylogeny
MH  - Polymerase Chain Reaction
MH  - RNA, Ribosomal, 16S/genetics
MH  - Sequence Analysis, DNA
MH  - *Soil Microbiology
MH  - Soil Pollutants/*metabolism
MH  - Switzerland
OTO - NOTNLM
OT  - Catalysts
OT  - Dehalogenation
OT  - Nanoparticles
OT  - Palladium
OT  - Serpentinite
OT  - Totalp
EDAT- 2014/09/15 06:00
MHDA- 2015/09/15 06:00
CRDT- 2014/09/15 06:00
PHST- 2013/12/16 00:00 [received]
PHST- 2014/07/13 00:00 [revised]
PHST- 2014/07/15 00:00 [accepted]
PHST- 2014/09/15 06:00 [entrez]
PHST- 2014/09/15 06:00 [pubmed]
PHST- 2015/09/15 06:00 [medline]
AID - S0045-6535(14)00890-X [pii]
AID - 10.1016/j.chemosphere.2014.07.030 [doi]
PST - ppublish
SO  - Chemosphere. 2014 Dec;117:462-70. doi: 10.1016/j.chemosphere.2014.07.030. Epub 
      2014 Sep 19.