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; e-ISSN 1465-2080, more
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| Keywords |
Agents > Inhibitors
Chemical elements > Metals > Heavy metals > Cadmium
Population functions > Growth
Sublethal effects
Rhodotorula rubra
Marine/Coastal |
| Authors | | Top |
- Stebbing, A.R.D.
- Norton, J.P.
- Brinsley, M.D.
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| 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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