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FEBS Lett. 1997 Jan 27;402(1):4-8.

Does selective gene activation direct evolution?

Author information

1
Division of Biological Sciences, The University of Montana, Missoula 59812-1002, USA. bewright@selway.umt.edu

Abstract

Mechanisms may have evolved such that the unique metabolic reaction to a particular environmental stress results in higher mutation rates of those genes most likely to solve the problem. Evidence is presented indicating that the environment in effect directs the evolution of organisms by (1) presenting various kinds of stress resulting in metabolic activities that target particular genes for increased rates of transcription and mutation, and (2) selecting among this specifically enriched mutant population those variants that alleviate the imposed stress. This process should be ongoing and would be expected to accelerate the rate of microbial evolution.

PMID:
9013846
DOI:
10.1016/s0014-5793(96)01479-2
[Indexed for MEDLINE]
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