A5069851147- Microbial Community Ecology and Physiology
- Photosynthetic Processes and Mechanisms
- Marine and coastal ecosystems
- Algal biology and biofuel production
- Protist diversity and phylogeny
- Biocrusts and Microbial Ecology
- Genomics and Phylogenetic Studies
- Microbial Metabolic Engineering and Bioproduction
- Metabolomics and Mass Spectrometry Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
Science for Life Laboratory
2014-2016
Uppsala University
2013-2016
Stockholm University
2009-2016
Joint Genome Institute
2011
Abstract Trichodesmium is a marine filamentous diazotrophic cyanobacterium and an important contributor of “new” nitrogen in the oligotrophic surface waters tropical sub‐tropical oceans. It unique that it exclusively fixes N 2 at daytime, although belongs to non‐heterocystous segment cyanobacterial radiation. Here we present first quantitative proteomic analysis erythraeum IMS101 when grown under different regimes using 2‐DE/MALDI‐TOF‐MS. Addition combined ( ${\rm NO}_{3}^{-}$ ) prevented...
In the filamentous cyanobacterium Nostoc punctiforme ATCC 29133, removal of combined nitrogen induces differentiation heterocysts, a cell-type specialized in N2 fixation. The involves genomic, structural and metabolic adaptations. cyanobacteria, changes availability carbon have also been linked to redox regulated posttranslational modifications protein bound thiol groups. We here employed targeting strategy relatively quantify putative proteome heterocysts as compared N2-fixing filaments, 24...
The establishment of non-diazotrophic cultures the filamentous marine cyanobacterium Trichodesmium erythraeum IMS101 enabled first detailed investigation process leading to development its unique nitrogen-fixing cell type, diazocyte. Trichome heterogeneity was apparent already within 3–8 h, while differentiation mature diazocytes, containing nitrogenase enzyme, required 27 h after removal combined nitrogen. distribution 'pro-diazocytes' trichomes correlates with localization which suggests...
Ferritin-like proteins constitute a remarkably heterogeneous protein family, including ferritins, bacterioferritins and Dps proteins. The genome of the filamentous heterocyst-forming cyanobacterium Nostoc punctiforme encodes five ferritin-like In present paper, we report multidimensional characterization these Our phylogenetic bioinformatics analyses suggest both structural physiological differences among expression genes responded differently to hydrogen peroxide treatment, with...
Examination of the diurnal patterns basic cellular processes in marine nonheterocystous diazotrophic cyanobacterium Trichodesmium revealed that division cells occurred throughout cycle, but it oscillated and peaked at an early stage dark period. Transcription cell gene ftsZ occurrence FtsZ protein showed a similar rhythmicity preceded cells. DNA replication (dnaA transcription) before transcription hetR, latter encoding key heterocyst differentiation protein. hetR turn development...
In cyanobacteria, DNA-binding proteins from starved cells (Dps) play an important role in the cellular response to oxidative and nutritional stresses. this study, we have characterized cell-type specificity promoter regions of two orthologous dps genes, Npun_R5799 Nostoc punctiforme alr3808 Anabaena sp. PCC 7120. A transcriptional start site (TSS), identical location previously identified proximal TSS alr3808, was for under both combined nitrogen supplemented N2-fixing growth conditions....