This review deals with techniques and methods used in the study of the function and development of microorganisms occurring in soil with emphasis on the contributions of Czech Academician Ivan Málek and his coworkers or fellows (Jiří Macura, František Kunc) to the development of basic techniques used in soil microbiology. Early studies, including batch cultivation and respirometric techniques, as well as later developments of percolation and continuous-flow methods of cultivation of soil microorganisms are discussed. Recent developments in the application of analytical chemistry (HPLC or GC) and of molecular biological techniques to ecological questions that have revolutionized concepts in soil microbiology and microbial ecology are also briefly mentioned, including denaturing gradient gel electrophoresis (DGGE), temperature gradient gel electrophoresis (TGGE), phospholipid fatty acid analysis (PLFA) and others. The shift of soil microbiology from the study of individual microorganisms to entire microbial communities, including nonculturable species, is briefly discussed.

Institute of Microbiology ASCR 5 V 1 Vídeňská 1083 14220 Prague 4 Krč Czech Republic

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