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transduction|trɑːnsˈdʌkʃən, træns-|
[ad. L. transductiōn-em (usually trāductiōnem), n. of action f. tra(ns)dūcĕre: see traduce.]
1. The action of leading or bringing across. rare.
1656Blount Glossogr., Transduction, a leading over, a removing from one place to another. a1816Bentham Offic. Apt. Maximized, Introd. View (1830) 19 In lieu of adduction, as the purpose requires, will be subjoined abduction, transduction,..and so forth.
2. The action or process of transducing a signal.
1947Jrnl. Acoustical Soc. Amer. XIX. 307/1 It is rather interesting..that the direct method of electronic transduction, instead of the indirect method of employing a conventional transducer and then amplifying the output with a vacuum tube, has not been developed. 1970J. Earl Tuners & Amplifiers iv. 87 Low impedance pickup cartridges..using the moving-coil principle of transduction. 1975Nature 17 Apr. 625/1 The transduction of light energy into neural signals is mediated in all known visual systems by a common type of visual pigment.
3. Microbiology. The transfer of genetic material from one cell to another by a virus or virus-like particle.
1952Zinder & Lederberg in Jrnl. Bacteriol. LXIV. 681 To help the further exposition of our experiments, we shall use the term transduction for genetically unilateral transfer in contrast to the union of equivalent elements in fertilization. 1960[see F III. 1 l]. 1971Nature 18 June 466/1 It has been suggested that transduction of genes by viruses was an important mechanism in evolution for spreading useful mutations between organisms not formally related. 1977Lancet 9 July 94/2 These were derived by selection of sensitive variants from gentamicin-resistant strains or by transduction of this resistance to sensitive strains.
Hence transˈductional a., of or pertaining to (genetic) transduction.
1956Genetics XLI. 845 (heading) Linear inheritance in transductional clones. 1980Jrnl. Gen. Microbiol. CXIX. 51 Transductional analysis revealed that one of the four mutations carried by strain T-693 was responsible for constitutive synthesis of both isoleucine and threonine biosynthetic enzymes. |