kinetózis

Kinetózis, also spelled kinesis, is a phenomenon observed in the field of microbiology, where microorganisms exhibit a change in their movement or behavior in response to a specific stimulus. This response is typically characterized by a cessation or alteration of motility, such as the stopping of bacterial flagella or the halting of eukaryotic cell movement. Kinetózis is often used as a diagnostic tool in microbiology to identify certain bacteria, as different species may exhibit unique responses to specific stimuli.

The most commonly studied form of kinetózis is optokinetic response, where microorganisms alter their movement in response to light. This response is often used to distinguish between different types of bacteria, such as phototactic and photophobic responses. Other stimuli that can induce kinetózis include chemical substances, temperature changes, and electrical fields. The mechanism behind kinetózis involves the interaction of the stimulus with specific receptors on the cell surface, leading to a cascade of intracellular signals that ultimately affect the cell's motility.

Kinetózis is not limited to bacteria; it is also observed in eukaryotic microorganisms, such as protozoa and algae. In these organisms, kinetózis can be induced by a variety of stimuli, including chemical substances, temperature changes, and mechanical forces. The study of kinetózis has contributed to our understanding of microbial behavior and has practical applications in fields such as environmental monitoring, water quality assessment, and the development of diagnostic tools for infectious diseases.