Journal article

Elemental and metabolite profiling of nickel hyperaccumulators from New Caledonia

Damien L Callahan, Ute Roessner, Vincent Dumontet, Alysha M De Livera, Augustine Doronila, Alan JM Baker, Spas D Kolev



Leaf material from nine Ni hyperaccumulating species was collected in New Caledonia: Homalium kanaliense (Vieill.) Briq., Casearia silvana Schltr, Geissois hirsuta Brongn. & Gris, Hybanthus austrocaledonicus Seem, Psychotria douarrei (G. Beauvis.) Däniker, Pycnandra acuminata (Pierre ex Baill.) Swenson & Munzinger (syn Sebertia acuminata Pierre ex Baill.), Geissois pruinosa Brongn. & Gris, Homalium deplanchei (Viell) Warb. and Geissois bradfordii (H.C. Hopkins). The elemental concentration was determined by inductively-coupled plasma optical emission spectrometry (ICP-OES) and from these results it was found that the species contained Ni concentrations from to 250-28,000 mg/kg dry mass. Gas ..

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Awarded by Australian Research Council (ARC)

Funding Acknowledgements

Damien Callahan acknowledges the Australian Research Council (ARC) (Linkage Project LP0347205) and The University of Melbourne for the provision of the PhD and Melbourne abroad travel scholarship. The authors also acknowledge financial support from the A. D. Rowden White Foundation, the ARC and the Victorian Institute for Chemical Sciences for the purchase of the ICP and MS instruments used in this study. We would also like to thank IRD Noumea (New Caledonia), The Laboratoire des Plantes Medicinales ICSN-CNRS (New Caledonia) for field support and DTPA soil analysis and The Province Sud from New Caledonia for the access to biodiversity. Thanks also to Terry Speed for helpful discussions related to the statistical analyses, and Suganthi Suren, Metabolomcis Australia for GC-MS analysis.