Forty years ago: the discovery of bacterial transduction

Article Abstract:

Bacterial transduction was first recognized as a cellular transformation phenomenon in 1952. Prior to this, investigators were studying interstrain crosses of bacterial strains. When Harriett Ephrussi-Taylor introduced the concept of a phage producing bacterial transformation, researchers of interstrain crosses were provided with a new framework within which to base their studies. At a symposium of the Society of American Bacteriologists, the novel idea of bacterial transduction was introduced. A few years later, that concept has become classical.

History, Bacterial transformation

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Yuichiro Hiraizumi and forty years of segregation distortion

Article Abstract:

The segregation distortion (SD) gene product was only just identified as a mutated version of one of the key players in nuclear transport. However, the first published report describing SD chromosomes occurred 40 years ago in 1959, as part of an eight-paper series that reported the results of a research collaboration between Larry Sandler and Yuichiro Hiraizumi. Hiraizumi has made lasting contributions to two of the most intriguing genetic systems in Drosophila as a result of his persistence through the years.

Research, Gene mutations, Gene mutation, Achievements and awards, Scientists, Hiraizumi, Yuichiro

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Reassessing forty years of genetic doctrine: retrotransfer and conjugation

Article Abstract:

Unidirectional transfer is one of the long-held doctrines in the field of bacterial genetics. The controversy centering on bacterial conjugation and retrotransfer presents an opportunity for the validation of this doctrine. The concerted initiatives of different researchers, some espousing clashing views on the issue, can provide further clarifications on two independent and mutually exclusive models of conjugation.

Models, Bacterial genetics, Conjugation (Biology), Conjugation (Reproduction)

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