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| Content Provider | Springer Nature Link |
|---|---|
| Author | Plaza, Sonia Weber, Johann Pajonk, Simone Thomas, Jérôme Talke, Ina N. Schellenberg, Maja Pradervand, Sylvain Burla, Bo Geisler, Markus Martiia, Enrico Krämer, Ute |
| Copyright Year | 2015 |
| 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. |
| Starting Page | 521 |
| Ending Page | 528 |
| Page Count | 8 |
| File Format | |
| ISSN | 09660844 |
| Journal | BioMetals |
| Volume Number | 28 |
| Issue Number | 3 |
| e-ISSN | 15728773 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2015-03-10 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cadmium (Cd) Metal hyperaccumulator plant Iron (Fe) Jasmonate Insect herbivory Pieris rapae Chemical ecology Elemental defence Phytoremediation Biochemistry Pharmacology/Toxicology Microbiology Cell Biology Plant Physiology Medicine/Public Health |
| Content Type | Text |
| Resource Type | Article |
| Subject | Metals and Alloys Biochemistry, Genetics and Molecular Biology Biomaterials Agricultural and Biological Sciences |
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