Nicole C. Poulsen

The 100 Diatom Genomes Project

Thomas Möck, Gust Bilcke, Eliott Flaum, Shunan Fu et autres

One hundred diatom species have been selected for genome and transcriptome sequencing. The 100 Diatom Genomes Project aims to provide a scalable framework for understanding diatom biodiversity, ecology and evolution, and for investigating their use in biotechnology.

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Dynamic switching of cell-substrate contact sites allows gliding diatoms to modulate the curvature of their paths

Stefan Golfier, Veikko F. Geyer, Leon Lettermann, Ulrich S. Schwarz et autres

Abstract: The directed motility of unicellular organisms is critical for their survival and ecological success, yet the mechanisms that enable rigid-walled diatoms to dynamically reorient and alter the shape of their trajectories remain poorly understood. Here, we investigate the gliding motility of …

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Dynamic switching of cell-substrate contact sites allows gliding diatoms to modulate the curvature of their paths

Stefan Golfier, Veikko F. Geyer, Leon Lettermann, Ulrich S. Schwarz et autres

Abstract: The directed motility of unicellular organisms is critical for their survival and ecological success, yet the mechanisms that enable rigid-walled diatoms to dynamically reorient and alter the shape of their trajectories remain poorly understood. Here, we investigate the gliding motility of …

de (code pays fourni par la source)

Dynamic switching of cell-substrate contact sites allows gliding diatoms to modulate the curvature of their paths

Stefan Golfier, Veikko F. Geyer, Nicole C. Poulsen, Stefan Diez

Abstract The directed motility of unicellular organisms is critical for their survival and ecological success, yet the mechanisms that enable rigid-walled cells to dynamically reorient and alter the shape of their trajectories remain poorly understood. Here, we investigate the gliding motility of …

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Gliding motility of the diatom Craspedostauros australis coincides with the intracellular movement of raphid-specific myosins

Metin Gabriel Davutoglu, Veikko F. Geyer, Lukas Niese, Marcelo Zoccoler et autres

Raphid diatoms are one of the few eukaryotes capable of gliding motility, which is remarkably fast and allows for quasi-instantaneous directional reversals. Besides other mechanistic models, it has been suggested that an actomyosin system provides the force for diatom gliding. However, in …

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Gliding motility of the diatom Craspedostauros australis correlates with the intracellular movement of raphid-specific myosins

Metin Gabriel Davutoglu, Veikko F. Geyer, Lukas Niese, Marcelo Zoccoler et autres

Raphid diatoms are one of the few eukaryotes capable of gliding motility, which is remarkably fast and allows for quasi-instantaneous directional reversals. Besides other mechanistic models, it has been suggested that an actomyosin system provides the force for diatom gliding. However, in …

de (code pays fourni par la source)

Diatom adhesive trail proteins acquired by horizontal gene transfer from bacteria serve as primers for marine biofilm formation

Jiřina Žáčková Suchanová, Gust Bilcke, Beata Romanowska, Ali H. Al-Fatlawi et autres

Biofilm-forming benthic diatoms are key primary producers in coastal habitats, where they frequently dominate sunlit intertidal substrata. The development of gliding motility in raphid diatoms was a key molecular adaptation that contributed to their evolutionary success. However, the structure-function correlation between diatom …

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Thalassiosira pseudonana (Cyclotella nana) (Hustedt) Hasle et Heimdal (Bacillariophyceae): A genetically tractable model organism for studying diatom biology, including biological silica formation

Nicole C. Poulsen, Nils Kröger

In 2004, Thalassiosira pseudonana was the first eukaryotic marine alga to have its genome sequenced. Since then, this species has quickly emerged as a valuable model species for investigating the molecular underpinnings of essentially all aspects of diatom life, particularly bio-morphogenesis of …

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Diatom adhesive trail proteins acquired by horizontal gene transfer from bacteria serve as primers for marine biofilm formation

Jiřina Žáčková Suchanová, Gust Bilcke, Beata Romanowska, Ali H. Al-Fatlawi et autres

Summary Biofilm-forming benthic diatoms are key primary producers in coastal habitats, where they frequently dominate sunlit submerged and intertidal substrata. The development of a unique form of gliding motility in raphid diatoms was a key molecular adaptation that contributed to their evolutionary …

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On the role of cell surface associated, mucin‐like glycoproteins in the pennate diatom Craspedostauros australis (Bacillariophyceae)

Nicole C. Poulsen, Helene Hennig, Veikko F. Geyer, Stefan Diez et autres

Diatoms are single-celled microalgae with silica-based cell walls (frustules) that are abundantly present in aquatic habitats, and form the basis of the food chain in many ecosystems. Many benthic diatoms have the remarkable ability to glide on all natural or man-made underwater …

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Shedding light on silica biomineralization by comparative analysis of the silica‐associated proteomes from three diatom species

Alastair W. Skeffington, Marc Gentzel, André Ohara, Alexander Milentyev et autres

Morphogenesis of the intricate patterns of diatom silica cell walls is a protein-guided process, yet to date only very few such silica biomineralization proteins have been identified. Therefore, it is currently unknown whether all diatoms share conserved proteins of a basal silica …

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Diatom Adhesion and Motility

Nicole C. Poulsen, Metin Gabriel Davutoglu, Jiřina Žáčková Suchanová

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