Search for dissertations about: "SAR11"

Showing result 1 - 5 of 6 swedish dissertations containing the word SAR11.

2. 1. Drivers of Population Dynamics in Bacterioplankton : Spotlight on Alphaproteobacteria and its dominant SAR11 Lineage

   Author : Friederike Heinrich; Stefan Bertilsson; Alexander Eiler; David Kirchman; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; bacterial community dynamics; Alphaproteobacteria; SAR11; LD12; Southern Ocean; lakes; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

   Abstract : Bacteria are mediators of biogeochemical cycles and are in this way vital for maintaining life on earth. Their distribution, abundance and functioning are driven by environmental heterogeneity and dynamic change in abiotic and biotic factors. READ MORE

4. 2. Phylogenomics of Oceanic Bacteria

   Author : Johan Viklund; Siv Andersson; Edward DeLong; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; phylogenetics; SAR11; mitochondria;

   Abstract : The focus of this thesis has been the phylogenomics and evolution of the Alphaproteobacteria. This is a very diverse group which encompasses bacteria from intraceullar parasites, such as the Rickettsiales, to freeliving bacteria such as the most abundant bacteria on earth, the SAR11. READ MORE

5. 3. Inferring Ancestry : Mitochondrial Origins and Other Deep Branches in the Eukaryote Tree of Life

   Author : Ding He; Sandra Baldauf; Siv Andersson; Andrew Roger; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Molecular Phylogeny; Phylogenomics; Mitochondria; Eukaryote tree of life; Biology with specialization in Systematics; Biologi med inriktning mot systematik; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

   Abstract : There are ~12 supergroups of complex-celled organisms (eukaryotes), but relationships among them (including the root) remain elusive. For Paper I, I developed a dataset of 37 eukaryotic proteins of bacterial origin (euBac), representing the conservative protein core of the proto-mitochondrion. READ MORE

6. 4. Microbial Metagenomics : A Tale of the Dead and the Living

   Author : Katarzyna Zaremba-Niedźwiedzka; Siv G.E. Andersson; Jeroen Raes; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; single-cell genomics; single cell; fossil metagenome; freshwater metagenome; LD12;

   Abstract : It is a microbial world we live in: microbes outnumber other organisms by several orders of magnitude, and they have great importance for the environment. However, environmental microbes are notoriously difficult to grow in the laboratory, and using culture independent techniques is necessary to expand our view. READ MORE

7. 5. From genes to ecological function in marine bacteria

   Author : Neelam Akram; Jarone Pinhassi; Ian Hewson; Linnéuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mikrobiologi; Microbiology;

   Abstract : Bacteria in the sea are constantly exposed to environmental challenges (e.g. variations in nutrient concentrations, temperature and light conditions), and therefore appropriate gene expression response strategies to cope with them efficiently are evolved. READ MORE