Control of plant architecture by adapting light- and hormone signal transduction processes (UPB.5562)

Productivity of agricultural and horticultural crops is a complex function of the acquisition of resources and their distribution within the plant to harvestable products. Under field conditions, both the acquisition of resources, largely via photosynthesis, and their distribution are mainly determined by ambient light. Under field conditions, the distribution of resources within the developing plant is mainly determined by a plant's response to crowding-induced changes in light quality and quantity via shade avoidance.
In crop cultures, preferably grown at high densities, inter-plant competition is a very serious problem and results in agriculturally wasteful allocation of assimilates to typical shade avoidance responses like stem growth and early flowering at the expense of harvestable products. Therefore, control of shade avoidance responses is of tremendous importance in agriculture and horticulture. In this project a molecular approach is taken to understand and modify this problem in crop plants.

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