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Dynamics of growth control in a marine yeast subjected to perturbation
Stebbing, A.R.D.; Norton, J.P.; Brinsley, M.D. (1984). Dynamics of growth control in a marine yeast subjected to perturbation. Microbiology 130(7): 1799-1808
In: Microbiology. Society for General Microbiology: Reading. ISSN 1350-0872, more
Peer reviewed article  

Available in Authors 

Keywords
    Cadmium; Growth; Inhibitors; Sublethal effects; Rhodotorula rubra; Marine

Authors  Top 
  • Stebbing, A.R.D.
  • Norton, J.P.
  • Brinsley, M.D.

Abstract
    Normalized specific growth rates of cultures of the yeast Rhodotorula rubra apparently indicate the activity of a growth control mechanism, when growth is perturbed with low concentrations of a toxic inhibitor (cadmium). Data from a number of experiments, in which different cadmium concentrations were used, indicate non-linear growth control dynamics and some features of a model structure, but do not permit it to be defined. Hormesis, the tendency of subinhibitory levels of typically toxic agents to stimulate growth, is a consequence of transient or sustained overcorrections by the control mechanism to low levels of an inhibitory stimulus.

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