Subtle changes in environmental stress can now be detected and measured at sublethal levels as a generic response to environmental stress. The present invention provides a method to detect changes in the environmental stress level. The stress change is indicated as a change in the luminescence output of a genetically engineered microorganism. In the present invention the luminescence gene complex is under the control of a stress inducible promoter.
Provides the technology to determine the level of environmental stress experienced by an organism