Martinus Beijerinck

Martinus Willem Beijerinck (16 March 1851 – 1 January 1931) was a Dutch microbiologist and botanist. He studied tiny living things and helped start the study of very small germs that can make people sick.

Beijerinck is well known for finding and studying viruses in 1898. He called these tiny germs "contagium vivum fluidum". His work helped scientists learn how these germs can spread diseases.

He was also a leader in the study of environmental microbiology, learning how tiny living things grow and change in nature. Because of his important discoveries, Beijerinck is remembered as one of the founders of both virology and environmental microbiology. His ideas helped shape how we learn about tiny creatures and how they affect our world.

Life

Beijerinck was born in Amsterdam and studied biology at the Technical School of Delft. He earned his degree in 1872. He received his Doctor of Science from the University of Leiden in 1877. He taught microbiology at schools in Wageningen and Delft and founded the Delft School of Microbiology.

His work helped advance the study of biology. He is sometimes less known than scientists like Robert Koch and Louis Pasteur because he did not study human diseases.

Beijerinck helped start the field of virology. In 1898, he showed that tobacco mosaic disease is caused by something smaller than a bacterium. He called this infectious agent a "contagium vivum fluidum". Later, it was proven to be a virus.

Beijerinck also studied how certain bacteria can change nitrogen in the air into a form plants can use. This is important for soil fertility and agriculture. He discovered that some bacteria can live without oxygen by using sulfate instead. He also created a method called enrichment culture to study tiny living things in nature.

Personal life

Martinus Beijerinck had a unique personal life. He spoke harshly to his students, never married, and worked with only a few colleagues. He believed that doing science and being married did not mix well. Beijerinck loved teaching biology but felt sad when students and their families did not like him. After he stopped working at the Delft School of Microbiology in 1921 when he was 70 years old, he moved to Gorssel to live with his two sisters until the end of his life.

Recognition

Several things are named after Martinus Beijerinck. There is a group of bacteria called Beijerinckia and a family of bacteria called Beijerinckiaceae. There is also a crater on a planet named Beijerinck crater to honor him.

There is a special prize called the M.W. Beijerinck Virology Prize to remember his work.