Research School for Socio-Economic and
Natural Sciences of the Environment
Research School for Socio-Economic and
Natural Sciences of the Environment

Peng Peng

Date: 06 September 2019
Time: 16:00 - 17:30
Location: Aula, building 362, Gen. Foulkesweg 1, Wageningen

Dissertation title: 

Microbial transformation of organic and inorganic halogen compounds

Group: Wageningen University, Microbiology
Promotor: Prof.dr. H. Smidt
Co-promotors: Dr. S. Atashgahi

Extra information:


Organic and inorganic halogen compounds are largely produced from industries. Besides their anthropogenic origin, these compounds are also naturally produced in pristine environments. Organic and inorganic halogen compounds are often toxic and have adverse effects on human, animal and environmental health. This thesis describes microbial pure cultures (e.g. Pseudomonas chloritidismutans AW-1T, Desulfoluna spongiiphila DBB) and complex microbial consortia containing organohalide-respiring bacteria or acetogenic Clostridium obtained from both contaminated and pristine environments that are capable of metabolic or co-metabolic transformation of organohalogens and/or inorganic chlorate. The ecophysiology, genetics and potential applications of these microbes were studied using a wide range of complementary approaches including (enrichment) cultivation, physiological, biochemical and stable isotope-based analyses, molecular biology, (meta)genomics and proteomics. This thesis contributes to extend our knowledge of different dehalogenating microbes in contaminated as well as pristine environments.

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