Please use this identifier to cite or link to this item: https://doi.org/10.1007/s10534-015-9829-9
Title: Wounding of Arabidopsis halleri leaves enhances cadmium accumulation that acts as a defense against herbivory
Authors: Plaza, S
Weber, J
Pajonk, S
Thomas, J
Talke, I.N
Schellenberg, M
Pradervand, S
Burla, B 
Geisler, M
Martinoia, E
Krämer, U
Keywords: cadmium
animal
Arabidopsis
butterfly
gene expression regulation
herbivory
larva
metabolism
parasitology
pathogenicity
plant leaf
Animals
Arabidopsis
Butterflies
Cadmium
Gene Expression Regulation, Plant
Herbivory
Larva
Plant Leaves
Issue Date: 2015
Publisher: Kluwer Academic Publishers
Citation: Plaza, S, Weber, J, Pajonk, S, Thomas, J, Talke, I.N, Schellenberg, M, Pradervand, S, Burla, B, Geisler, M, Martinoia, E, Krämer, U (2015). Wounding of Arabidopsis halleri leaves enhances cadmium accumulation that acts as a defense against herbivory. BioMetals 28 (3) : 521-528. ScholarBank@NUS Repository. https://doi.org/10.1007/s10534-015-9829-9
Rights: Attribution 4.0 International
Abstract: Approximately 0.2 % of all angiosperms are classified as metal hyperaccumulators based on their extraordinarily high leaf metal contents, for example >1 % zinc, >0.1 % nickel or >0.01 % cadmium (Cd) in dry biomass. So far, metal hyperaccumulation has been considered to be a taxon-wide, constitutively expressed trait, the extent of which depends solely on available metal concentrations in the soil. Here we show that in the facultative metallophyte Arabidopsis halleri, both insect herbivory and mechanical wounding of leaves trigger an increase specifically in leaf Cd accumulation. Moreover, the Cd concentrations accumulated in leaves can serve as an elemental defense against herbivory by larvae of the Brassicaceae specialist small white (Pieris rapae), thus allowing the plant to take advantage of this non-essential trace element and toxin. Metal homeostasis genes are overrepresented in the systemic transcriptional response of roots to the wounding of leaves in A. halleri, supporting that leaf Cd accumulation is preceded by systemic signaling events. A similar, but quantitatively less pronounced transcriptional response was observed in A. thaliana, suggesting that the systemically regulated modulation of metal homeostasis in response to leaf wounding also occurs in non-hyperaccumulator plants. This is the first report of an environmental stimulus influencing metal hyperaccumulation. © 2015 The Author(s).
Source Title: BioMetals
URI: https://scholarbank.nus.edu.sg/handle/10635/179659
ISSN: 0966-0844
DOI: 10.1007/s10534-015-9829-9
Rights: Attribution 4.0 International
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