Knowra Martinus Beijerinck Martinus Beijerinck Martinus Beijerinck (1851–1931) was a Dutch microbiologist whose work on tobacco mosaic disease helped establish virology. He also advanced bacteriology and the study of microbes in nature.
Delft School of Microbiology : A Dutch research tradition in microbiology associated with Beijerinck and the Delft Polytechnic. Beijerinck founded this influential school through his research and teaching in Delft.
Tobacco mosaic virus : A rod-shaped plant virus that causes mosaic patterns on tobacco leaves and was central to early virology. Its filterable infectivity led Beijerinck to propose a new kind of infectious agent.
Microbiology : The study of microscopic organisms and infectious agents, including bacteria, archaea, fungi, and viruses. Beijerinck’s research helped shape microbiology as a modern experimental science.
Virology : The study of viruses, their replication, evolution, and interactions with hosts. Beijerinck’s interpretation of tobacco mosaic disease helped establish this field.
Dmitri Ivanovsky : A Russian botanist who showed that tobacco mosaic disease could pass through bacteria-retaining filters. Ivanovsky’s filtration experiments preceded Beijerinck’s interpretation of the infectious agent.
Berkefeld filter : A porous diatomaceous-earth filter used to remove bacteria from liquids. Beijerinck used bacteria-retaining filters to show that tobacco mosaic infectivity passed through them.
Bacteriology : The study of bacteria, including their structure, physiology, ecology, and roles in disease. His work on bacterial physiology and cultivation extended beyond his contributions to virology.
Contagium vivum fluidum : Beijerinck’s term for the infectious agent of tobacco mosaic disease, meaning a contagious living fluid. The phrase captured his view that the agent passed filters and multiplied in living tissue.
Wendell Meredith Stanley : An American biochemist who crystallized tobacco mosaic virus in 1935. Stanley’s later work transformed the virus Beijerinck studied into a crystallizable object of biochemistry.
Enrichment culture : A cultivation method that favors organisms with selected metabolic abilities by controlling growth conditions. Beijerinck used selective conditions to isolate microbes with particular physiological traits.
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