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New Phytol

Title:		Eco-evolutionary factors drive induced plant volatiles: a meta-analysis
Author(s):		Rowen E; Kaplan I;
Address:		"Department of Entomology, The Pennsylvania State University, University Park, PA, 16802-3508, USA. Department of Entomology, Purdue University, 901 W. State Street, West Lafayette, IN, 47907, USA"
Journal Title:		New Phytol
Year:		2016
Volume:		20160104
Issue:		1
Page Number:		284 - 294
DOI:		10.1111/nph.13804
ISSN/ISBN:		1469-8137 (Electronic) 0028-646X (Linking)
Abstract:		"Herbivore-induced plant volatiles (HIPVs) mediate critical ecological functions, but no studies have quantitatively synthesized data published on HIPVs to evaluate broad patterns. We tested three hypotheses that use eco-evolutionary theory to predict volatile induction: feeding guild (chewing arthropods > sap feeders), diet breadth (specialist herbivores > generalists), and selection history (domesticated plants < wild species). To test these hypotheses, we extracted data from 236 experiments that report volatiles produced by herbivore-damaged and undamaged plants. These data were subjected to meta-analysis, including effects on total volatiles and major biochemical classes. Overall, we found that chewers induced more volatiles than sap feeders, for both total volatiles and most volatile classes (e.g. green leaf volatiles, monoterpenes). Although specialist herbivores induced more total volatiles than generalists, this was inconsistent across chemical classes. Contrary to our expectation, domesticated species induced stronger volatile responses than wild species, even when controlling for plant taxonomy. Surprisingly, this is the first quantitative synthesis of published studies on HIPVs. Our analysis provides support for perceptions in the published literature (chewers > sap feeders), while challenging other commonly held notions (wild > crop). Despite the large number of experiments, we identified several gaps in the existing literature that should guide future investigations"
Keywords:		Animals *Biological Evolution Diet *Ecosystem Herbivory/physiology Plants/*metabolism Volatile Organic Compounds/*metabolism crop domestication diet breadth feeding guild herbivore-induced plant volatiles (HIPVs) herbivory induced defense;
Notes:		"MedlineRowen, Elizabeth Kaplan, Ian eng Research Support, U.S. Gov't, Non-P.H.S. England 2016/01/05 New Phytol. 2016 Apr; 210(1):284-94. doi: 10.1111/nph.13804. Epub 2016 Jan 4"