Ivanovsky ca. 1915
October 28, 1864|
Village of Nizy, Gdov Uyezd, St. Petersburg Governorate, Russian Empire
|Died||June 20, 1920
|Institutions||University of St Petersburg
University of Warsaw
|Alma mater||University of St Petersburg|
|Doctoral advisor||Andrei Famintsyn|
|Known for||Tobacco mosaic virus|
Dmitri Iosifovich Ivanovsky (alternative spelling Dmitrii or Dmitry Iwanowski; Russian: Дми́трий Ио́сифович Ивано́вский; October 28, 1864 – June 20, 1920) was a Russian botanist, the first man to discover viruses (1892) and thus one of the founders of virology.
Ivanovsky studied at the University of St Petersburg under Andrei Famintsyn in 1887, when he was sent to Ukraine and Bessarabia to investigate a tobacco disease causing great damage to plantations located there at the time. Three years later, he was assigned to look into a similar disease occurrence of tobacco plants, this time raging in the Crimea region. He discovered that both incidents of disease were caused by an extremely minuscule infectious agent, capable of permeating porcelain Chamberland filters, something which bacteria could never do. He described his findings in an article (1892) and a dissertation (1902). Then he worked in Warsaw and Rostov-on-Don.
In 1898, the Dutch microbiologist Martinus Beijerinck independently replicated Ivanovsky's experiments and became convinced that the filtered solution contained a new form of infectious agent, which he named virus. Beijerinck subsequently acknowledged Ivanovsky's priority of discovery.
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