« Previous AbstractConjugative transfer of Enterococcus faecalis plasmid pAD1: nucleotide sequence and transcriptional fusion analysis of a region involved in positive regulation    Next AbstractDual herbivore attack and herbivore density affect metabolic profiles of Brassica nigra leaves »

Plant Cell Environ

Title:		Caterpillar-induced plant volatiles remain a reliable signal for foraging wasps during dual attack with a plant pathogen or non-host insect herbivore
Author(s):		Ponzio C; Gols R; Weldegergis BT; Dicke M;
Address:		"Laboratory of Entomology, Wageningen University, P.O. Box 8031, 6700 EH, Wageningen, The Netherlands"
Journal Title:		Plant Cell Environ
Year:		2014
Volume:		20140407
Issue:		8
Page Number:		1924 - 1935
DOI:		10.1111/pce.12301
ISSN/ISBN:		1365-3040 (Electronic) 0140-7791 (Linking)
Abstract:		"Plants respond to herbivory with the emission of plant volatiles, which can be used by the herbivores' natural enemies to locate their hosts or prey. In nature, plants are often simultaneously confronted with insect herbivores and phytopathogens, potentially interfering with the attraction of the herbivores' enemies as a result of modifications of the induced volatile blend. Here, we investigated parasitoid (Cotesia glomerata) attraction to volatiles of plants challenged by different attackers, either alone or in combination with Pieris brassicae caterpillars, hosts of C. glomerata. We used a natural system consisting of Brassica nigra plants, eggs and larvae of P. brassicae, Brevicoryne brassicae aphids and the bacterial phytopathogen Xanthomonas campestris pv. campestris. In all cases, parasitoids successfully located host-infested plants, and wasp foraging behaviour was unaffected by the simultaneous presence of a non-host attacker or host eggs. Analysis of the volatile emissions show that the volatile blends of caterpillar-infested treatments were different from those without caterpillars. Furthermore, dually attacked plants could not be separated from those with only caterpillars, regardless of non-host identity, supporting the behavioural data. Our results suggest that, in this system, indirect plant defences may be more resistant to interference than is generally assumed, with volatiles induced during dual attack remaining reliable indicators of host presence for parasitoids"
Keywords:		Animals Butterflies/parasitology/*physiology *Herbivory Larva Mustard Plant/*chemistry/physiology Pheromones/chemistry Plant Diseases Volatile Organic Compounds/*chemistry Wasps/*physiology Xanthomonas campestris Cotesia glomerata Hipv Pieris brassicae in;
Notes:		"MedlinePonzio, Camille Gols, Rieta Weldegergis, Berhane T Dicke, Marcel eng Research Support, Non-U.S. Gov't 2014/04/05 Plant Cell Environ. 2014 Aug; 37(8):1924-35. doi: 10.1111/pce.12301. Epub 2014 Apr 7"