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Research Abstracts Online
January - December 2011

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University of Minnesota Twin Cities
College of Food, Agricultural, and Natural Resource Sciences
Department of Horticultural Science

PI: Gary M. Gardner

Properties of the Photoreceptor for Plant Responses to UV-B Light

This project tests the hypothesis that plant growth responses to UV-B light are due to perception by a unique photoreceptor(s), focusing on the inhibition of elongation growth of etiolated Arabidopsis hypocotyls by pulses of UV light. The experiments on this response fall into three categories: 1) Identify and characterize mutants and natural accessions of Arabidopsis, and the corresponding genes and gene products, that demonstrate a decreased sensitivity to UV-B; 2) Determine the relationship between photomorphogenic UV-B perception and signaling and DNA damage and repair; 3) Examine protein changes and translational regulation of protein synthesis in response to photomorphogenic fluences of UV-B.