Born 16 Mar 1851; died 1 Jan 1931 at age 79.
Dutch botanist who turned into one of the first microbiologists to apprehend the significance of lactic acid micro organism for meals production. He contributed to agriculture, botany, microbiology, chemistry and genetics. In studies on gall wasps and the formation of galls (1882) he laid basis for the principle of ontogeny in better plant life and animals wherein boom enzymes act in collection in a set order (1917). Since his father turned into a tobacco provider who went bankrupt, he researched the tobacco mosaic virus, which reasons a sickness of tobacco plant life with critical monetary impact. He found that even after filtering the sap of an inflamed plant to put off micro organism, the liquid turned into nevertheless capable of convey contamination to every other plant. Thus he knew the sickness turned into now no longer because of micro organism, however with the aid of using some thing else with inside the the liquid, which he known as a filterable virus (from Latin phrase for poison) however which later researchers verified in truth had a particle form.