The Info List - Ferdinand Cohn

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Ferdinand Julius Cohn (24 January 1828 – 25 June 1898) was a German biologist. He is one of the founders of modern bacteriology and microbiology. Ferdinand J. Cohn was born in the Jewish quarter of Breslau
in the Prussian Province of Silesia
Province of Silesia
(which is now Wroclaw, Poland).[1][2] His father, Issak Cohn, was a successful merchant and manufacturer. At the age of 10 Ferdinand suffered hearing impairment (for an unknown reason). Starting at age 16 he studied botany under Heinrich Goppert at the University of Breslau. Due to Cohn's Jewish background he was prevented from taking the final degree examinations at Breslau.[1][2][3][dubious – discuss] He then moved to the University of Berlin. At age 19 in 1847 he received a degree in botany at Berlin. He remained studying botany for another couple of years in Berlin, where he came in contact with many of the top scientists of his time. In 1849 he returned to the University of Breslau
and he remained at that university for the rest of his career as a teacher and researcher. On his initial return to Breslau
in his early twenties, his father had bought for him a large and expensive microscope made by Simon Plössl. This microscope, which the University of Breslau
and most universities did not have, was Ferdinand Cohn's main research tool in the 1850s. In the 1850s he studied the growth and division of plant cells. In 1855 he produced papers on the sexuality of Sphaeroplea
annulina and later Volvox globator. In the 1860s he studied plant physiology in several different aspects. From 1870 onward he mostly studied bacteria. He established the use of sterile culture mediums and rediscovered the botanical garden of Lorenz Scholz von Rosenau in Breslau. He published over 150 research reports during his lifetime. The University of Breslau
became an innovative center for plant physiology and microbiology while he was there. Cohn was the first to classify algae as plants, and to define what distinguishes them from green plants. His classification of bacteria into four groups based on shape (sphericals, short rods, threads, and spirals) is still in use today. Among other things Cohn is remembered for being the first to show that Bacillus
can change from a vegetative state to an endospore state when subjected to an environment deleterious to the vegetative state. In 1885 he received the Leeuwenhoek Medal. The standard author abbreviation Cohn is used to indicate this person as the author when citing a botanical name.[4] References[edit]

^ a b Chung, King-Thom. Ferdinand Julius Cohn (1828-1898): Pioneer of Bacteriology. Department of Microbiology and Molecular Cell Sciences, The University of Memphis. ^ a b Drews, Gerhart (1999). "Ferdinand Cohn, a founder of modern microbiology" (PDF). ASM News. 65 (8): 547–552. Archived from the original (PDF) on 2017-07-13.  ^ Ferdinand Cohn
Ferdinand Cohn
Facts. Biography.yourdictionary.com (2014-06-20). Retrieved on 2014-06-29. ^ IPNI.  Cohn. 

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Jewish Encyclopedia entry for Ferdinand Julius Cohn Ferdinand Cohn
Ferdinand Cohn
in the Encyclopedia of World Biography, published by Gale Group (2010).

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WorldCat Identities VIAF: 61803207 LCCN: n87147074 ISNI: 0000 0001 0979 3199 GND: 116629207 SUDOC: 073441783 BNF: cb146262992 (data) NLA: 35254601 NKC: ola2002158989 Botanist: C