Search for dissertations about: "multicellularity"

Showing result 1 - 5 of 8 swedish dissertations containing the word multicellularity.

2. 1. Ocean chemistry and the evolution of multicellularity

   Author : Emma U. Hammarlund; Stefan Bengtson; Donald Canfield; Nils Holm; Graham Budd; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geochemistry; biology; paleontology; evolution; multicellularity; geokemi; Geochemistry;

   Abstract : Oxygen has been assumed to be a vital trigger for the evolution of multicellular life forms on Earth, partly based on its power to promote substantial energy flux in cell respiration and partly as biosynthesis of compounds like collagen require oxygen. However, the co-evolution of large life and the Earth’s chemical environment is not well understood at present, and there is particular disagreement in the field about whether the Cambrian explosion of animal life forms was a chemical or biological event. READ MORE

4. 2. Diversity Underfoot : Systematics and Biogeography of the Dictyostelid Social Amoebae

   Author : Allison L Perrigo; Sandra Baldauf; Maria Romeralo; David Bass; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Amoeba; biogeography; cryptic species; dictyostelid; latitudinal gradient; multicellularity; protist; social amoeba; phylogenetics; systematics; new species; Biology with specialization in Systematics; Biologi med inriktning mot systematik;

   Abstract : Dictyostelids (Amoebozoa) are a group of social amoebae consisting of approximately 150 species, which are found in terrestrial habitats worldwide. They are divided into eight major clades based on molecular phylogeny, and within these clades are many species complexes. READ MORE

5. 3. All Roads Lead to the Non-Coding RNome : Evolution of Multicellularity and Host Response to Bacterial Infection

   Author : Jonas Kjellin; Fredrik Söderbom; Jonathan Chubb; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ncRNA; Dictyostelia; miRNA; Class I RNA; host-pathogen interaction; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

   Abstract : The ability to control gene expression is fundamental for all living organisms. Therefore, a large variety of regulatory mechanisms exist in each cell which are essential for e.g. developmental processes and to quickly adapt to different cellular stresses such as infection. READ MORE

6. 4. Function and Evolution of Small Regulatory RNAs and their Associated Proteins : A Journey from Genome to Proteome

   Author : Bart Edelbroek; Fredrik Söderbom; Jonathan R. Chubb; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microRNAs; non-coding RNAs; Evolution; Whole Genome Sequencing; Transcriptomics; Proteomics; small RNAseq; Amoebozoa; Multicellular development; Social amoebae; Comparative genomics; Genome annotation; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology;

   Abstract : Organisms throughout the tree of life have evolved distinct ways to regulate gene expression. Some of these processes involve non-coding RNAs (ncRNAs), which are not translated but functional nonetheless. These ncRNAs are of utmost importance, with dysregulation of some causing severe developmental effects or even being lethal. READ MORE

7. 5. Evolution and transcriptional regulation of Kindlins

   Author : Ammad Khan; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Kindlins are relatively newly discovered focal adhesion proteins. The Kindlin family includes three highly conserved proteins: Kindlin-1, Kindlin-2 and Kindlin-3. All three Kindlins have been shown to interact with Integrin and this interaction plays important role in the functional properties of Kindlins. READ MORE