Ecological significance of Synergistetes in the biological treatment of tuna cooking wastewater by an anaerobic sequencing batch reactor.

Cécile Militon (1, 2) , Olfa Hamdi (1) , Valerie Michotey (1, 2) , Marie-Laure Fardeau (1) , Bernard Ollivier (1, 2) , Hassib Bouallagui , Moktar Hamdi , Patricia Bonin (1, 2)

1 MIO - Institut méditerranéen d'océanologie
2 MEB

Lab-scale 2L-anaerobic sequencing batch reactor was operated under mesothermic conditions. The degradation of protein-rich organic matter was determined by chemical oxygen demand, biogas production, and protein-removal activity over the operation. The structure of the microbial community was determined by qPCR and next-generation sequencing on 16S rRNA genes. At the steady state, a very efficient removal of protein (92 %) was observed. Our results demonstrate a decrease of archaeal and bacterial abundance over time. Members of the phylum Synergistetes, with a peculiar emphasis for those pertaining to families Dethiosulfovibrionaceae and Aminiphilaceae, are of major ecological significance regarding the treatment of this industrial wastewater. The prominent role to be played by members of the phylum Synergistetes regarding protein and/or amino acid degradation is discussed.

Domaines: Biodiversité et Ecologie; Interactions entre organismes; Biologie moléculaire

Cécile Militon, Olfa Hamdi, Valerie Michotey, Marie-Laure Fardeau, Bernard Ollivier, et al.. Ecological significance of Synergistetes in the biological treatment of tuna cooking wastewater by an anaerobic sequencing batch reactor.. Environmental Science and Pollution Research, 2015, pp.2015 Jul 22. ⟨10.1007/s11356-015-4973-x⟩. ⟨hal-01201712⟩