Who would get mixed with a hefty chap two meters high? There would be few those who wish. Just imagine that in a moment of danger this “hefty chap” becomes thrice as large... Is it fantasy? It is, if we are talking about people. But if it comes to unicellular algae, it is a typical scenario provided by nature for them. The scenedesmus unicellular alga grows thrice as large in presence of predators - cladoceran and rotifers that eat up unicellular algae. This is a defence mechanism as rotifers are unable to swallow such big cell.
This interesting peculiarity of the scenedesmus unicellular alga was investigated by the researchers of the Zoological Institute (Russian Academy of Sciences) in St. Petersburg. They managed to prove that the cell’s “image change” occurs at the genetic level at the point of transcription - information read-out from DNA.
To ascertain the transformation mechanism the researchers applied the actinomycin D inhibitor, which blocks read-out of hereditary information from DNA and, as a result, protein synthesis. An alga specimen was cultivated in a lean solution of chemical fertilizers. For the first experiment, the alga was transplanted into two glasses with rotifers that started to eat up the algae. The researchers added actinomycin D in one of the vessels, the other remaining intact for comparison.
Sergey Komarov | alfa
Complementing conventional antibiotics
24.05.2018 | Goethe-Universität Frankfurt am Main
Building a brain, cell by cell: Researchers make a mini neuron network (of two)
23.05.2018 | Institute of Industrial Science, The University of Tokyo
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
24.05.2018 | Ecology, The Environment and Conservation
24.05.2018 | Medical Engineering
24.05.2018 | Physics and Astronomy