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Cohn, drawing on Robert's work, was the first to discover that some bacteria possess a life cycle that includes a spore stage. This life cycle included an incubation period, a stage of progressive growth, a fastigium (the period of maximum development of a disease), and a period of remission.
Cohn’s early research centred on the unicellular algae, the lowest forms of plant life. He applied to these organisms the principle that the phases of growth of microscopic plants could be learned only by observing every stage of their development under the microscope, just as differences in the youthful and adult appearance of an oak or a ...
- The Editors of Encyclopaedia Britannica
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Dec 25, 2022 · He described the entire life cycle of the endospore forming bacteria, Bacillus (vegetative cell – endospore – vegetative cell), and discovered that the vegetative form of this bacteria was killed by heating, but their endospores were not killed in the process of heating.
Jul 1, 2000 · This short overview on the history of fermentation shows that the concepts of catalysis and species-specific metabolic capacities of microorganisms, experimentally proved by new analytical and microbiological methods, paved the way for modern research of this field.
- Gerhart Drews
- 2000
Cohn’s work also helped establish the recognition of bacteria as a separate group of living organisms different from plants or animals. Ferdinand was born on January 24, 1828 in Breslau (now Wroclaw), Lower Silesia, now in Poland. His father, Issak Cohn, was poor and lived in Breslau’s Jewish ghetto when Ferdinand was born.
Some even suggested that bacteria are merely rudimentary components of the fungal life cycle. The principal proponents of pleomorphism, such as Almquist, Bergstrand, Hort, Lohnis, Mellon, and Enderlein, have largely been forgotten. However, even renowned microbiologists like Ferdinand Cohn published evidence in support of extreme pleomorphism.
May 23, 2018 · Cohn, Ferdinand Julius (1828-1898) German microbiologist. Ferdinand Cohn, a founder of modern microbiology, became the first to recognize and study bacteriology as a separate science. Cohn developed a system for classifying bacteria and discovered the importance of heat-resistant endospores. Additionally, Cohn recognized that both pathogens and ...
