Gei V., Echevarria G., Erskine P.D., Isnard Sandrine, Fogliani B., Montargès-Pelletier E., Jaffré Tanguy, Spiers K.M., Garrevoet J., Van der Ent A. (2020). Soil chemistry, elemental profiles and elemental distribution in nickel hyperaccumulator species from New Caledonia. Plant and Soil, 457 (1-2), 293-320. ISSN 1573-5036.
Titre du document
Soil chemistry, elemental profiles and elemental distribution in nickel hyperaccumulator species from New Caledonia
Année de publication
2020
Auteurs
Gei V., Echevarria G., Erskine P.D., Isnard Sandrine, Fogliani B., Montargès-Pelletier E., Jaffré Tanguy, Spiers K.M., Garrevoet J., Van der Ent A.
Source
Plant and Soil, 2020,
457 (1-2), 293-320 ISSN 1573-5036
Aims This study aimed to establish elemental profiles and to spatially resolve the elemental distribution in five New Caledonian woody Ni hyperaccumulator plant species (Geissois pruinosavar. pruinosa,Homalium francii,Hybanthus austrocaledonicus,Psychotria gabriellae, andPycnandra acuminata) originating from the Cunoniaceae, Salicaceae, Violaceae, Rubiaceae, and Sapotaceae families respectively. Methods Using synchrotron-based micro-X-ray Fluorescence (mu XRF) imaging of different plant tissues, from the roots to the shoots and reproductive organs, this study aimed to clarify how distribution patterns of nickel, and other physiologically relevant elements, differ between these species. Results The results show that the tissue-level and cellular-level distribution of nickel inP. gabriellae, H. austrocaledonicus, G. pruinosavar. pruinosa,andH. franciiconform with the majority of studied Ni hyperaccumulator plant species globally, including (temperate) herbaceous species, with localization mainly in epidermal cells and phloem bundles. However,P. acuminatahas nickel-rich laticifers, which constitute an independent network of cells that is parallel to the vascular bundles and are the main sink for nickel. Conclusions Synchrotron-based micro-X-ray Fluorescence (mu XRF) is a powerful method for investigating how metal hyperaccumulation influences acquisition and spatial distribution of a wide range of elements. This non-invasive method enables investigation into the in vivo distribution of multiple elements and the structure and organisation of cells (e.g. laticifers).
Plan de classement
Biologie [020BIOL]
;
Techniques d'analyse et approches méthodologiques [068ANASOL]
;
Composition chimique des plantes [076PHYBIO03]
Descripteurs
PLANTE A LATEX ; CHIMIE DU SOL ; NICKEL ; MIGRATION D'ELEMENT ; PHYSIOLOGIE VEGETALE ; HYPERACCUMULATION ; SPECTROSCOPIE DE FLUORESCENCE DES RAYONS X
Description Géographique
NOUVELLE CALEDONIE
Localisation
Fonds IRD [F B010078716] ;
Nouméa
Identifiant IRD
fdi:010078716
