Friday, August 6, 2010: 8:00 AM-11:30 AM
303-304, David L Lawrence Convention Center
OOS 52 - Plant Signaling: The Opportunities and Dangers of Chemical Communication
The notion of chemical communication between plants and other organisms has gone from being viewed as a fringe idea to an accepted ecological phenomenon only recently. Within the past two years, the number of published examples of this phenomenon has more than doubled. Ecologists have also realized that communication involving volatile chemicals is commonly involved in diverse roles that were previously not suspected, such as the physiological integration among ramets of an individual plant. Volatile communication is associated with a variety of ecological consequences that are not exhibited by vascular or other more 'hidden' signaling modes. Chemical communication involving volatile signals should be faster, more localized, and less private than communication involving vascular plant connections. These properties are likely to have far-reaching consequences that are beginning to be explored, including eavesdropping and other forms of cheating by individuals and species that were not intended to be participants in the communication by the signal emitter. Thus volatile plant communication has unique consequences for competitors, predators, parasites and prey, and indeed for the entire community and ecosystem. Recent empirical work has greatly increased our awareness of these varied interactions while recent theoretical advances have made us consider of potential advantages and limitations of communication as well as the situations where we expect it to be evolutionarily stable. We have organized the speakers to build from specific systems to broader synthesis. The first speakers will provide state of the art descriptions of the wide number of ways that plants communicate with each other or with a variety of animals. These will include signals used by plants to attract bodyguards, signals used by parasitic plants to find hosts, signals used to attract pollinators and other mutualists, and chemical mediation of soil processes. The later speakers will address the evolution, modeling, and consequences of plant signaling, presenting overviews of the advantages and costs of communication between plants, comparison of volatile and vascular signaling, chemically mediated interaction between herbivores and mutualists, the role of chemical signaling in ecological interactions, and the theory of signal evolution in a tritrophic context.
Organizer:	Frederick R. Adler, University of Utah
Co-organizer:	Rick Karban, University of California at Davis
Moderator:	Frederick R. Adler, University of Utah
8:00 AM	OOS 52-1		Counteracting a plant's defense: Suppression of herbivore-induced plant volatiles and phytohormones by pea aphids Ezra G. Schwartzberg, The Pennsylvania State University, James H. Tumlinson, The Pennsylvania State University
8:20 AM	OOS 52-2		Body odor and body building in arthropod-plant communities Marcel Dicke, Wageningen University
8:40 AM	OOS 52-3		Chemical ecology of insect-vectored plant diseases Mark Mescher, The Pennsylvania State University
9:00 AM	OOS 52-4		Dissecting immune signaling networks controlling bacterial recognition in plants Gitta Coaker, University of California at Davis, Jun Liu, University of California at Davis, James M. Elmore, University of California at Davis
9:20 AM	OOS 52-5		Impacts of invaders in native and non-native ranges Ragan M. Callaway, The University of Montana
9:40 AM			Break
9:50 AM	OOS 52-6		Exotic plants, volatile mismatches and tri-trophic interactions: Differential attraction of a hemipteran predator to exotic and native willows Colin M. Orians, Tufts University, Anna Lehrman, Swedish University of Agricultural Sciences, Johan A. Stenberg, Swedish University of Agricultural Sciences, Christer Björkman, Swedish University of Agricultural Sciences
10:10 AM	OOS 52-7		Herbivory-induced pollinator limitation in the wild tomato Solanum peruvianum Andre Kessler, Cornell University, Rayko Halitschke, Cornell University, Katja Poveda, Göttingen University
10:30 AM	OOS 52-8		Plant responses to airborne volatiles depend on signal source and specificity Christopher J. Frost, Pennsylvania State University
10:50 AM	OOS 52-9		Can Plants evolve stable Alliances with the Enemies' Enemies ? Maurice Sabelis, University of Amsterdam
11:10 AM	OOS 52-10		The advantages and costs of communication between plants Rick Karban, University of California at Davis

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