Martinus Beijerinck
Dutch microbiologist and co-discoverer of viruses.
via Wikipedia: List of biologists · see source
He is credited with the co-discovery of viruses in 1898, which he termed 'contagium vivum fluidum' (contagious living fluid), and made fundamental contributions to the study of nitrogen fixation, bacterial sulfate reduction, and enrichment culture methods.
- field
- Microbiology, botany
- nationality
- Dutch
Verified Timeline
Lore & Background
His early notable research paper on plant galls, written in 1877, became the basis for his doctoral dissertation. In 1898, Beijerinck published results on filtration experiments demonstrating that tobacco mosaic disease was caused by an infectious agent smaller than a bacterium, which he named a virus. He concluded the agent could replicate in living plants and described it as a contagious living fluid. He also investigated nitrogen fixation, revealing the symbiotic relationship between bacteria and leguminous plants, and discovered bacterial sulfate reduction, isolating the first known sulfate-reducing bacterium, Spirillum desulfuricans (now Desulfovibrio desulfuricans). Beijerinck was known as a socially eccentric figure, verbally abusive to students, never married, and held an ascetic lifestyle, viewing science and marriage as incompatible. After retiring in 1921 at age 70, he moved to Gorssel to live with his two sisters.
Reader's Guide
Beijerinck's significance lies in his foundational role in virology and environmental microbiology. His invention of the enrichment culture method became a cornerstone for studying microbes from natural environments. Additionally, his discoveries in nitrogen fixation and bacterial sulfate reduction advanced understanding of biogeochemical cycles and symbiosis. The M.W. Beijerinck Virology Prize and the naming of bacterial genera and a lunar crater honor his legacy.
Did You Know?
- Beijerinck coined the term 'contagium vivum fluidum' (contagious living fluid) for the tobacco mosaic disease agent in 1898.
- He isolated the first known sulfate-reducing bacterium, Spirillum desulfuricans (now Desulfovibrio desulfuricans).
- Beijerinck never married, viewing science and marriage as incompatible.
- He became a member of the Royal Netherlands Academy of Arts and Sciences in 1885.
- After retiring in 1921 at age 70, he moved to Gorssel to live with his two sisters.
Frequently Asked Questions
Who is Martinus Beijerinck?
Martinus Beijerinck was a Dutch scientist who worked across microbiology and botany during the late 19th and early 20th centuries. He is widely regarded as a founding figure in both virology and environmental microbiology.
What is Martinus Beijerinck best known for?
He is most celebrated for co-discovering viruses in 1898 while investigating tobacco mosaic disease. His identification of an infectious agent that passed through filters too small for bacteria fundamentally reshaped how scientists understood disease transmission.
What term did Beijerinck use for the virus he discovered?
He called it 'contagium vivum fluidum,' translating roughly to 'contagious living fluid.' This phrasing reflected his view that the infectious agent was a living, fluid-like substance rather than a discrete particulate organism.
What did Beijerinck contribute besides the discovery of viruses?
He developed enrichment culture techniques that let researchers isolate specific bacteria from mixed environmental samples. He also made key advances in understanding nitrogen fixation and bacterial sulfate reduction, laying groundwork for modern environmental microbiology.
When and where was Martinus Beijerinck born, and when did he die?
He was born on 16 March 1851 in Amsterdam, Netherlands, and died on 1 January 1931 in Gorssel. His lifespan covered the period when microbiology was transforming from a largely descriptive field into a rigorous experimental science.
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