Public Release: 

Symposium to highlight regulation of plant immune responses

American Society of Plant Biologists

The Symposium: Signal Transduction Mechanisms in Plant Defense Activation will be held from 4 p.m. to 6 p.m. Tuesday, July 24, 2001 in Ballrooms A,D& E of the Rhode Island Convention Center as part of the annual meeting of the American Society of Plant Biologists (ASPB).

Dr. Xinnian Dong of Duke University will present results of research on regulation of systemic acquired resistance as it relates to the NPR1 gene and its partners in the model plant, Arabidopsis thaliana. Systemic acquired resistance is a plant immune response that is often activated after a local infection.

Participating in the same symposium is Dr. Daniel Klessig of the Boyce Thompson Institute for Plant Research. To help elucidate the mechanisms of salicylic acid action, Klessig's lab has identified several tobacco proteins which interact with salicylic acid. Klessig has used mutant analyses of Arabidopsis to identify several more potential components in the salicylic acid-mediated pathway.

Dr. Andrew Bent of the University of Wisconsin, Madison, will present his findings on nucleotide binding site - leucine-rich repeat (NBS-LRR) plant disease resistance gene products: functional domains and downstream response activation.

Dr. Gregory Martin of the Boyce Thompson Institute will make a presentation on Pseudomonas effector proteins and Pto-mediated disease resistance in tomato.


For more on research by Xinnian, Klessig, Bent and Martin, see their abstracts at

For press registration for the meeting, contact Brian Hyps at or at 301-251-0560, ext. 114.

For general information on the ASPB annual meeting (Plant Biology 2001), which will be held from July 21-25, 2001 in Providence, Rhode Island, visit the ASPB annual meeting web site at This meeting is sponsored jointly by ASPB and the Canadian Society of Plant Physiologists.

Founded in 1924, ASPB changed its name this year from the American Society of Plant Physiologists to reflect the broader diversity of plant scientists in its membership. ASPB is a non-profit society representing more than 5,000 plant scientists. ASPB publishes two of the most widely cited plant science journals, The Plant Cell and Plant Physiology.

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