Abstract: The present invention concerns a method for replacing optical elements and a light fixture containing at least one light source for illumination, including a system for fastening and replacing at least one optical element by means of magnetic attachment. It is the purpose of the invention to achieve rapid replacement of optical components in connection with a light fixture. Another purpose is that this replacement may occur without using tools and without the operator interfering with the preload of the fastening. The purpose may be achieved by a light fixture, if the optical element and the light fixture include at least two interacting magnetic interlocking pairs, the interlocking pairs including at least one permanent magnet, where at least the permanent magnet of the interlocking pair is disposed in a magnetically non-conducting material. Hereby it becomes possible for an operator to replace optical components in a very large number of light fixtures rapidly and without risking damage to the components.

Abstract: “The present invention relates to DNA sequences, comprising nucleic acid fragments encoding dehiscence zone-selective proteins, particularly cell wall hydrolases such as polygalacturonases, and their use for modifying dehiscence properties in plants, more particularly pod dehiscence properties in Brassica napus.

Abstract: Uses of MAPK4, a member of the mitogen-activated protein (MAP) kinase family, are provided herein, based on the discovery that the MAPK4 negatively regulates the expression of genes associated with disease (e.g. PR-genes) and wound responses in plants such that the loss of MAPK4 function leads to their derepression. Methods are disclosed for controlling the growth of a plant and/or the expression of at least one wounding or pathogen response gene in said plant, the method comprising altering in the plant the level of the gene product of a MAPK4 gene. Furthermore, transgenic plants transformed with an MAPK4 construct and having enhanced wound and/or disease resistance are disclosed.

Abstract: A plant is provided which contains at least one dehiscence zone (DZ)-selective chimeric gene incorporated in the nuclear genome of its cells, wherein said DZ-selective chimeric gene comprises the following operably linked DNA fragments:

Abstract: A plant is provided which contains at least one dehiscence zone (DZ)-selective chimeric gene incorporated in the nuclear genome of its cells, wherein said DZ-selective chimeric gene comprises the following operably linked DNA fragments: a) a transcribed DNA region encoding: 1) a RNA which, when produced in cells of a particular DZ of the plant, prevents, inhibits or reduces the expression in DZ cells of an endogenous gene of the plant encoding a cell wall hydrolase, particularly an endopolygalacturonase, or, 2) a protein or polypeptide, which when produced in DZ cells, kills or disables them or interferes with their normal metabolism, physiology or development; b) a plant expressible promoter which directs expression of transcribed DNA region at least in DZ cells, provided that if transcribed DNA region encodes a protein or polypeptide, or encodes an antisense RNA or ribozyme directed to a sense RNA encoded by an endogenous gene that is expressed in plant in cells other than DZ cells, plant expressible promot