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Plant Cell Environ

Title:		Dual herbivore attack and herbivore density affect metabolic profiles of Brassica nigra leaves
Author(s):		Ponzio C; Papazian S; Albrectsen BR; Dicke M; Gols R;
Address:		"Laboratory of Entomology, Wageningen University, PO Box 16, 6700 AA, Wageningen, The Netherlands. Umea Plant Science Centre, Department of Plant Physiology, Umea University, 90187, Umea, Sweden"
Journal Title:		Plant Cell Environ
Year:		2017
Volume:		20170224
Issue:		8
Page Number:		1356 - 1367
DOI:		10.1111/pce.12926
ISSN/ISBN:		1365-3040 (Electronic) 0140-7791 (Linking)
Abstract:		"Plant responses to dual herbivore attack are increasingly studied, but effects on the metabolome have largely been restricted to volatile metabolites and defence-related non-volatile metabolites. However, plants subjected to stress, such as herbivory, undergo major changes in both primary and secondary metabolism. Using a naturally occurring system, we investigated metabolome-wide effects of single or dual herbivory on Brassica nigra plants by Brevicoryne brassicae aphids and Pieris brassicae caterpillars, while also considering the effect of aphid density. Metabolomic analysis of leaf material showed that single and dual herbivory had strong effects on the plant metabolome, with caterpillar feeding having the strongest influence. Additionally, aphid-density-dependent effects were found in both the single and dual infestation scenarios. Multivariate analysis revealed treatment-specific metabolomic profiles, and effects were largely driven by alterations in the glucosinolate and sugar pools. Our work shows that analysing the plant metabolome as a single entity rather than as individual metabolites provides new insights into the subcellular processes underlying plant defence against multiple herbivore attackers. These processes appear to be importantly influenced by insect density"
Keywords:		"Animals Aphids/physiology Chromatography, Liquid Discriminant Analysis Herbivory/*physiology Larva/physiology *Metabolome Multivariate Analysis Mustard Plant/*metabolism/*parasitology Plant Leaves/*metabolism Brevicoryne brassicae Pieris brassicae dual he;"
Notes:		"MedlinePonzio, Camille Papazian, Stefano Albrectsen, Benedicte R Dicke, Marcel Gols, Rieta eng 2017/02/06 Plant Cell Environ. 2017 Aug; 40(8):1356-1367. doi: 10.1111/pce.12926. Epub 2017 Feb 24"