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Subject 1: Environmental Omique and mechanisms of regulation of natural communities

Despite immense developments in the field of aquatic microbial ecology, driven by recent development in –omic techniques, and unprecedented amounts of research funding by state and major private initiatives (Global Ocean Study, International Census on Marine Microbes, Tara Oceans Expedition, Gordon and Betty Moore Foundation Marine Microbiology Initiative and the Earth Microbiome Project), much remains to be understood about the spatial and temporal patterns of microbial biodiversity in the environment and the role of microorganisms in aquatic environments. Our research builds upon the vast amount of information now available and focuses on questions regarding the physiology and activity of aquatic microorganisms.

Our research targets the functionality of environmental significant microorganisms though the application of genomic, metagenomic, proteomics, bioinformatic as well as experimental approaches using bioreactors and chemostats. Existing and newly gathered information on the linkage between organism identity and function are used to directly measure activity of specifically targeted microbes in the environment.

While we have a broad range of targets, the LBBM research focuses in particular on the physiology and ecology of photoheterotrophy, on the physiology of resistance to UV radiation and the role of quorum sensing on the diversity and activity or marine microorganisms. This theme is currently the subject of the French ANR RHOMEO project focusing on diversity and role of photoheterotrophic organisms in the marine environment. Similarly, the UPMC Emergence ACYMAR project focuses on the diversity and expression of genes and molecules involved in cell to cell communication in marine environments.

Some recently publications in this topic include

  • Courties A, Riedel T, Jarek M, Papadatou M, Intertaglia L, Lebaron P, Suzuki MT (2014) Draft Genome Sequence of the Gammaproteobacterial Strain MOLA455, a Representative of a Ubiquitous Proteorhodopsin-Producing Group in the Ocean. Genome Announc 2:e01203-13
  • Matallana-Surget S, Cavicchioli R, Fauconnier C, Wattiez R, Leroy B, Joux F, Raftery MJ, Lebaron P (2013) Shotgun Redox Proteomics: Identification and Quantitation of Carbonylated Proteins in the UVB-Resistant Marine Bacterium, Photobacterium angustum S14. PLoS One 8:ee68112
  • Matallana-Surget S, Villette C, Intertaglia L, Joux F, Bourrain M, Lebaron P (2012b) Response to UVB radiation and oxidative stress of marine bacteria isolated from South Pacific Ocean and Mediterranean Sea. Journal of Photochemistry and Photobiology B: Biology 117:254-261
  • Yao D, Buchan A, Suzuki MT (2011) In situ Activity of NAC11-7 Roseobacters in Coastal Waters off the Chesapeake Bay based onftsZ Expression. Environ Microbiol 13:1032-1041

Marcelino Suzuki - 17/07/16

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