Chemical Ecology
Ecological role of metal hyperaccumulation in Arabidopsis halleri
The Brassicaceae species Arabidopsis halleri is a zinc (Zn) and cadmium (Cd) hyperaccumulator widely found around metal-contaminated soils in Asia and Europe. Besides accumulating these metals, previous studies revealed that A. halleri concentrates the metalloid silicon (Si) in its foliage. We investigate the interactions between Zn, Cd and Si in relationship to plant elemental (inorganic) defences against various antagonists. Moreover, we examine potential trade-offs between inorganic and organic (specialised) defences in the light of intraspecific plant chemodiversity.
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