The Molecular Logic of Cellular Signaling Systems
The Winogradsky column is a simple device for culturing a large diversity of microorganisms. Invented in the 1880s by Sergei Winogradsky, the device is a column of pond mud and water mixed with a carbon source such as newspaper (containing cellulose), blackened marshmallows or egg-shells (containing calcium carbonate), and a sulfur source such as gypsum (calcium sulfate) or egg yolk. Incubating the column in sunlight for months results in an aerobic/anaerobic gradient as well as a sulfide gradient. These two gradients promote the growth of different microorganisms such as Clostridium, Desulfovibrio, Chlorobium, Chromatium, Rhodomicrobium, and Beggiatoa, as well as many other species of bacteria, cyanobacteria, and algae.
A micrograph or photomicrograph is a photograph or digital image taken through a microscope or similar device to show a magnified image of an item. This is opposed to a macrographic image, which is at a scale that is visible to the naked eye.
<p>Consistent with the Deep Data concept, this work would reproduce or reinterpret space bioscience experiments using the same organism. It appears that arabidopsis has been used extensively for gravitaxis and root development experiments, and despite my future plans to build a random positioning machine, that was not feasible on the short timescale I had to develop and make the piece.</p> <p>Being a model organism, arabidopsis has numerous documented naturally occurring and genetically manipulated mutants. One of these is the photomorphogenic mutant NW67, which will show variations in the development of the hypocotyl depending on the spectrum of light it receives at the seedling stage.</p>