Abstract: The present invention concerns the detection of resistance in a living organism, e.g., herbicide resistance in weed crops. Based on non-separated compounds obtained from an organism, e.g., an extract from a plant, a color development is generated. The color or shade developed is dependent on the compounds of the organism. By comparing the color or shade of the extract obtained from an organism with a standard color scale developed with respect to the same organism, it is possible to determine if the organism is resistant to a pesticide, e.g., a herbicide. The invention also concerns a method of providing a standard color scale for material from a living organism that has been exposed to stress, e.g., a pesticide. As assay kit for the determination of whether material from a living organism is resistant to a pesticide is also described. The present invention may be used by farmers or advisors to test if the plants have developed resistance to a herbicide.

Abstract: The present invention concerns a method of testing whether a living organism has been exposed to stress, such as pesticide exposure, e.g., whether weed crops have been exposed to herbicide. Based on non-separated compounds obtained from an organism, e.g., an extract from a plant, a color development is generated. The color or shade developed is dependent on the compounds of the organism. By comparing the color or shade of the extract obtained from an organism with a standard color scale developed with respect to the same organism, it is possible to determine the final effect of the stress upon the growth of the plant. The invention also concerns a method of providing a standard color scale for material from a living organism that has been exposed to stress, e.g., a pesticide. As assay kit for the determination of the final effect of the stress upon the growth of the plant is also described.

Abstract: The present invention concerns the detection of biomarkers in material from a living organism. More specifically the invention relates to a method of testing whether a living organism has been exposed to stress, such as pesticide exposure. The invention further relates to the use of such a method of testing. In particular a method of testing plant material is disclosed. The invention also concerns a method of providing a standard biomarker pattern for material from a living organism that has been exposed to stress and to an assay kit for the determination of whether material from a living organism has been exposed to stress. For example the present invention may be used in food quality control, such as for the control of whether organic crop has been exposed to stress, or it may be used in the control of gene modified plants, in control of the geographic distribution of pesticides and/or in effect studies of pesticides.