A5037290502- Algal biology and biofuel production
- Photosynthetic Processes and Mechanisms
- Photoreceptor and optogenetics research
- Biocrusts and Microbial Ecology
- Vascular Anomalies and Treatments
- Semiconductor Quantum Structures and Devices
- Light effects on plants
- Congenital Heart Disease Studies
- Cardiac Ischemia and Reperfusion
- Cardiac electrophysiology and arrhythmias
- Slime Mold and Myxomycetes Research
- Cardiac Arrhythmias and Treatments
- Ear Surgery and Otitis Media
- Tracheal and airway disorders
- Trauma Management and Diagnosis
- Cardiac pacing and defibrillation studies
- Nasal Surgery and Airway Studies
- Semiconductor Lasers and Optical Devices
- Cardiac Arrest and Resuscitation
- GaN-based semiconductor devices and materials
- Protist diversity and phylogeny
- Williams Syndrome Research
University of Freiburg
2015-2021
Fraunhofer Institute for Applied Solid State Physics
2014
Klinikum Coburg
2010
Many cyanobacteria, which use light as an energy source via photosynthesis, have evolved the ability to guide their movement toward or away from a source. This process, termed "phototaxis," enables organisms localize in optimal environments for improved growth and fitness. Mechanisms of phototaxis been studied coccoid cyanobacterium Synechocystis sp. strain PCC 6803, but rod-shaped Synechococcus elongatus 7942, circadian rhythms metabolic engineering, has no phototactic motility. In this...
Ethylene is a gaseous signal sensed by plants and bacteria. Heterologous expression of the ethylene-forming enzyme (EFE) from Pseudomonas syringae in cyanobacteria leads to production ethylene under photoautotrophic conditions. The recent characterization an ethylene-responsive signalling pathway affecting phototaxis cyanobacterium Synechocystis sp. PCC 6803 implied that biotechnologically relevant synthesis may induce regulatory processes are not related changes metabolism. Here, we provide...
The cyanobacterium Synechocystis sp. PCC 6803 can move directionally on a moist surface toward or away from light source to reach optimal conditions for its photosynthetic lifestyle. This behavior, called phototaxis, is mediated by type IV pili (T4P), which pull single cell into certain direction. Several photoreceptors and their downstream signal transduction elements are involved in the control of phototaxis. However, critical steps local pilus assembly positive negative phototaxis remain...
Phototaxis is a mechanism that allows cyanobacteria to respond fluctuations in the quality and quantity of illumination by moving either towards or away from light source. Phototactic movement on low concentration agar agarose plates can be analyzed at macroscopic microscopic scales representing group behavior single cell motility, respectively. Here, we describe detailed procedure for phototaxis assays both using unicellular cyanobacterium Synechocystis sp. PCC 6803.
Many prokaryotes show complex behaviors that require the intricate spatial and temporal organization of cellular protein machineries, leading to asymmetrical distribution cell polarity. One such behavior is cyanobacterial phototaxis which relies on dynamic localization Type IV pilus motor proteins in response light. In cyanobacterium Synechocystis, various signaling systems encompassing chemotaxis-related CheY- PatA-like regulators are critical players switching between positive negative...
We investigate the influence of epitaxial layer roughness on far-field profile optical mode in gallium Nitride-based, c-plane ridge waveguide laser diodes. Occasionally, we observe long-range growth instabilities leading to a periodical modulation surface. Amplitude and period this surface is typically order few 10nm 20 μm, respectively. Using different characterization techniques, vertical along fast axis far-field, particular contribution light scattering at rough interfaces, as well...
Abstract Many prokaryotes show complex behaviors that require the intricate spatial and temporal organization of cellular protein machineries, leading to asymmetrical distribution cell polarity. One such behavior is cyanobacterial phototaxis which relies on dynamic localization Type IV pilus motor proteins in response light. In cyanobacterium Synechocystis , various signaling systems encompassing chemotaxis-related CheY- PatA-like regulators are critical players switching between positive...
Objectives: The handling of a catheter and the related instruments is very difficult to learn. Moreover, in today’s medical curricula theoretical courses are directly followed by working on patients that puts enormous pressure trainee doctors. Therefore, we want setup simulation training using 3D printed anatomical model with pulsatile flow realize stress-free learning environment laboratory.