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Christof Holliger

Cette personne a quitté l’EPFL

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Publications associées (95)

Page 4 sur 5

The Physiological Opportunism of Desulfitobacterium hafniense Strain TCE1 towards Organohalide Respiration with Tetrachloroethene

Christof Holliger, Julien Maillard, Aurélie Duret

Desulfitobacterium hafniense strain TCE1 is capable of metabolically reducing tetra- and trichloroethenes by organohalide respiration. A previous study revealed that the pce gene cluster responsible for this process is located on an active composite transp ...

American Society for Microbiology2012

New Metabolites in the Degradation of α- and γ-Hexachlorocyclohexane (HCH): Pentachlorocyclohexenes Are Hydroxylated to Cyclohexenols and Cyclohexenediols by the Haloalkane Dehalogenase LinB from Sphingobium indicum B90A

Christof Holliger, Thomas Geiger

Technical hexachlorocyclohexane (HCH) and lindane are obsolete pesticides whose former production and use led to widespread contaminations posing serious and lasting health and environmental risks. Out of nine possible stereoisomers, α-, β-, γ-, and δ-HCH ...

American Chemical Society2008

Success and failure assessment methodology for wastewater and faecal sludge treatment projects in low-income countries

Christof Holliger, Doulaye Koné, Magalie Diane Bassan

Many factors influence success and failure of large-scale faecal sludge and wastewater treatment projects in low-income countries. Benchmarking indicators and multicriteria analysis were adapted to define key institutional, technical and financial factors, ...

Routledge Journals, Taylor & Francis Ltd2015

Anaerobic degradation of vinyl chloride in aquifer microcosms

Christof Holliger

The anaerobic degradation potential at a chloroethene-contaminated site was investigated by operating two anoxic column aquifer microcosms enriched in iron(III). One column was fed with vinyl chloride (VC) only (column A) and one with acetate in addition ( ...

American Society of Agronomy2011

Physiological adaptation of Desulfitobacterium hafniense strain TCE1 to tetrachloroethene respiration

Christof Holliger, Julien Maillard

Desulfitobacterium spp. are ubiquitous organisms with a broad metabolic versatility and some isolates have the ability to use tetrachloroethene (PCE) as terminal electron acceptor. In order to identify proteins involved in this organohalide respiration pro ...

American Society for Microbiology2011

Dynamics of Microbial Community Structure of and Enhanced Biological Phosphorus Removal by Aerobic Granules Cultivated on Propionate or Acetate

Christof Holliger, Graciela Gonzalez Gil

Aerobic granules are dense microbial aggregates with the potential to replace floccular sludge for the treatment of wastewaters. In bubble-column sequencing batch reactors, distinct microbial populations dominated propionate-and acetate-cultivated aerobic ...

American Society for Microbiology2011

Redundancy and specificity of multiple Trigger Factor chaperones in Desulfitobacteria

Christof Holliger, Julien Maillard

The ribosome-bound Trigger Factor (TF) chaperone assists folding of newly synthesized polypeptides and participates in the assembly of macromolecular complexes. In the present study we showed that multiple distinct TF paralogues are present in genomes of D ...

2011

Frequent concomitant presence of Desulfitobacterium spp. and “Dehalococcoides” spp. in chloroethene-dechlorinating microbial communities

Christof Holliger, Julien Maillard, Katia Szynalski

The presence of chloroethene dechlorination activity as well as several bacterial genera containing mainly organohalide respiring members was investigated in 34 environmental samples from 18 different sites. Cultures inoculated with these environmental sam ...

Springer-Verlag2011

Metabolomics of hexachlorocyclohexane (HCH) transformation: ratio of LinA to LinB determines metabolic fate of HCH isomers

Christof Holliger

Although the production and use of technical hexachlorocyclohexane (HCH) and lindane (the purified insecticidal isomer -HCH) are prohibited in most countries, residual concentrations still constitute an immense environmental burden. Many studies describe t ...

Wiley-Blackwell2013

Significance of Rhodocyclaceae for the formation of aerobic granular sludge biofilms and nutrient removal from wastewater

Christof Holliger, David Gregory Weissbrodt, Samuel Lochmatter

The competition of two Rhodocyclaceae-affiliated bacterial populations was assessed during the formation and maturation of aerobic granular sludge in two different types of anaerobic-aerobic sequencing batch reactors. Zoogloea spp. (57%) were predominant i ...

Tongji University2011

Power and Limitations of Biochemical Methane Potential (BMP) Tests

Christof Holliger

FRONTIERS MEDIA SA2020

Methane Production of Full-Scale Anaerobic Digestion Plants Calculated from Substrate's Biomethane Potentials Compares Well with the One Measured On-Site

Christof Holliger, Gabrielle Hack

Biomethane potential (BMP) tests are used to determine the amount of methane that can be produced from organic materials in order to design different components of full-scale anaerobic digestion (AD) plants such as size of the digesters and units exploitin ...

Frontiers Media Sa2017

Use of silicate minerals for pH control during reductive dechlorination of chloroethenes in batch cultures of different microbial consortia

David Andrew Barry, Christof Holliger, Alessandro Brovelli, Elsa Marina Lacroix

In chloroethene-contaminated sites undergoing in situ bioremediation, groundwater acidification is a frequent problem in the source zone, and buffering strategies have to be implemented to maintain the pH in the neutral range. An alternative to conventiona ...

American Society for Microbiology2014

Biochemistry of Microbial Degradation of Hexachlorocyclohexane and Prospects for Bioremediation

Christof Holliger

Lindane, the gamma-isomer of hexachlorocyclohexane (HCH), is a potent insecticide. Purified lindane or unpurified mixtures of this and alpha-, beta-, and gamma- isomers of HCH were widely used as commercial insecticides in the last half of the 20th century ...

2010

Complete genome sequence of Dehalobacter restrictus PER-K23T

Christof Holliger, Julien Maillard, Hauke Smidt

Dehalobacter restrictus strain PER-K23 (DSM 9455) is the type strain of the species Dehalobacter restrictus. D. restrictus strain PER-K23 grows by organohalide respiration, coupling the oxidation of H2 to the reductive dechlorination of tetra- or trichloro ...

2013

Statistical Assessment of Variability of Terminal Restriction Fragment Length Polymorphism Analysis Applied to Complex Microbial Communities

Christof Holliger, Pierre Rossi, François Gillet, Emmanuelle Rohrbach

The variability of terminal restriction fragment polymorphism analysis applied to complex microbial communities was assessed statistically. Recent technological improvements were implemented in the successive steps of the procedure, resulting in a standard ...

American Society for Microbiology2009

Diversity of cobalamin riboswitches in the corrinoid-producing organohalide respirer Desulfitobacterium hafniense

Christof Holliger, Julien Maillard, Emmanuelle Rohrbach, Aurélie Duret

The strategic adaptation of prokaryotes in polluted niches involves the efficient regulation of their metabolism. The obligate anaerobe and metabolically versatile Desulfitobacterium hafniense reductively dechlorinates halogenated organic compounds (so-cal ...

American Society for Microbiology2013

Harvesting of Chlorella sorokiniana by co-culture with the filamentous fungus Isaria fumosorosea: A potential sustainable feedstock for hydrothermal gasification

Christof Holliger, Jean-Paul Schwitzguebel, Eduardo Pereira Gomes, Stephen Mackay

Despite recent advances in down-stream processing, production of microalgae remains substantially limited because of economical reasons. Harvesting and dewatering are the most energy-intensive processing steps in their production and contribute 20–30% of t ...

Elsevier2015

Functional Genotyping of Sulfurospirillum spp. in Mixed Cultures Allowed the Identification of a New Tetrachloroethene Reductive Dehalogenase

Christof Holliger, Julien Maillard, Géraldine Florence Buttet

Reductive dehalogenases are the key enzymes involved in the anaerobic respiration of organohalides such as the widespread groundwater pollutant tetrachloroethene. The increasing number of available bacterial genomes and metagenomes gives access to hundreds ...

Amer Soc Microbiology2013

Haloalkane Dehalogenase LinB is responsible for β- and δ-hexachlorocyclohexane transoformation in sphingobium indicum B90A

Christof Holliger

Incubation of resting cells of Sphingobium indicum B90A, Sphingobium japonicum UT26, and Sphingobium francense Sp+ showed that they were able to transform ß- and -hexachlorocyclohexane (ß- and -HCH, respectively), the most recalcitrant hexachlorocyclohexan ...

2006