Isolation of Spm Controlling Elements from Maize
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Excerpt
Transposition was discovered in maize, and genetic studies on maize transposable element mutations span most of this century. The earliest systematic studies on unstable mutations eventually found to be attributable to insertion of transposable elements were carried out by R.A. Emerson (1914, 1917, 1929) and M.M. Rhoades (1936, 1938, 1941, 1945). The ability of genetic elements to transpose, however, was first documented by B. McClintock during the 1940s (McClintock 1947, 1948). McClintock also established that transposable elements were responsible for unstable mutations (1949, 1950a,b, 1952a). Subsequent studies, carried out principally by McClintock, R.A. Brink and his colleagues, and P.A. Peterson, enlarged the number of known transposable elements, defined their properties, and revealed the mechanism of transposition (for reviews, see McClintock 1952a, 1956a, 1965; Fincham and Sastry 1974; Fedoroff 1983).
Maize transposable element families have been defined by the genetic interaction between elements. The two families of maize transposons that have...
