ibclogo XVI International Botanical Congess


Abstract Number: 2342
Session = 3.18.7


INTERACTIONS BETWEEN LOCI CONTROLLING DISEASE RESISTANCE AND CELL DEATH IN ARABIDOPSIS


Petra Epple, Daniel Aviv, Robert A.Dietrich, and Jeffery L.Dangl. Dep. of Biology, UNC Chapel Hill, Chapel Hill, NC 27599


The Arabidopsis lsd1 mutant is characterized by the spontaneous, superoxide-dependent initiation and propagation of cell death. Thus, the wildtype LSD1 protein is required for correct interpretation of the plant oxidative burst leading to negative regulation of the defense response. To place the LSD1 function into the disease resistance pathway double mutants with other known components (eds1, ndr1, nim1, and nahG) of the pathway have been constructed and the results obtained will be presented. The LSD1 gene encodes a novel zinc finger protein possibly involved in transcriptional regulation. Using the zinc finger motif of LSD1 as a database probe we isolated two LSD One Like (LOL) genes from Arabidopsis. Their regulation and function will be discussed.


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