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Biochim Biophys Acta

Title:		"Herbivore-induced, indirect plant defences"
Author(s):		Arimura G; Kost C; Boland W;
Address:		"Max Planck Institute for Chemical Ecology, Department of Bioorganic Chemistry, Hans-Knoll-Strasse 8, D-07745 Jena, Germany"
Journal Title:		Biochim Biophys Acta
Year:		2005
Volume:		20050317
Issue:		2
Page Number:		91 - 111
DOI:		10.1016/j.bbalip.2005.03.001
ISSN/ISBN:		0006-3002 (Print) 0006-3002 (Linking)
Abstract:		"Indirect responses are defensive strategies by which plants attract natural enemies of their herbivores that act as plant defending agents. Such defences can be either constitutively expressed or induced by the combined action of mechanical damage and low- or high-molecular-weight elicitors from the attacking herbivore. Here, we focus on two induced indirect defences, namely the de novo production of volatiles and the secretion of extrafloral nectar, which both mediate interactions with organisms from higher trophic levels (i.e., parasitoids or carnivores). We give an overview on elicitors, early signals, and signal transduction resulting in a complex regulation of indirect defences and discuss effects of cross-talks between the signalling pathways (synergistic and antagonistic effects). In the light of recent findings, we review molecular and genetic aspects of the biosynthesis of herbivore-induced plant volatiles comprising terpenoids, aromatic compounds, and metabolites of fatty acids which act as infochemicals for animals and some of which even induce defence genes in neighbouring plants. Finally, ecological aspects of these two indirect defences such as their variability, specificity, evolution as well as their ecological relevance in nature are discussed"
Keywords:		"Animals Biological Evolution Cyclopentanes/chemistry/metabolism *Ecology Fatty Acids/chemistry/metabolism Gene Expression Regulation, Plant Host-Parasite Interactions Molecular Structure Oils, Volatile/chemistry/metabolism Oxylipins Plant Growth Regulator;"
Notes:		"MedlineArimura, Gen-ichiro Kost, Christian Boland, Wilhelm eng Review Netherlands 2005/05/21 Biochim Biophys Acta. 2005 May 15; 1734(2):91-111. doi: 10.1016/j.bbalip.2005.03.001. Epub 2005 Mar 17"