Nickel hyperaccumulation in New Caledonian Hybanthus (Violaceae) and occurrence of nickel-rich phloem in Hybanthus austrocaledonicus
| العنوان: | Nickel hyperaccumulation in New Caledonian Hybanthus (Violaceae) and occurrence of nickel-rich phloem in Hybanthus austrocaledonicus |
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| المؤلفون: | Vidiro Gei, Sandrine Isnard, Antony van der Ent, Tanguy Jaffré, Bruno Fogliani, Guillaume Echevarria, Jérôme Munzinger, Peter D. Erskine, Adrian L. D. Paul |
| المساهمون: | Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, University of Southern Queensland (USQ), Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie]), Institut Agronomique Néo-Calédonien (IAC), Laboratoire Sols et Environnement (LSE), Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| المصدر: | Ann Bot Annals of Botany 126 (2021) 5 Annals of Botany, 126(5), 905-914 Annals of Botany Annals of Botany, Oxford University Press (OUP), 2020, 126 (5), pp.905-914. ⟨10.1093/aob/mcaa112⟩ Annals of botany 126(5), 905-914 (2020). doi:10.1093/aob/mcaa112 |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, Hybanthus, chemistry.chemical_element, Plant Science, Phloem, [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, 01 natural sciences, Petiole (botany), 03 medical and health sciences, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, New Caledonia, Nickel, Botany, Hyperaccumulator, 030304 developmental biology, 0303 health sciences, biology, Hybanthus caledonicus, Original Articles, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, biology.organism_classification, New caledonia, Plant Leaves, ddc:580, Herbarium, chemistry, Hybanthus austrocaledonicus, visual_art, visual_art.visual_art_medium, Bark, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Violaceae, 010606 plant biology & botany |
| الوصف: | Background and Aims Hybanthus austrocaledonicus (Violaceae) is a nickel (Ni) hyperaccumulator endemic to New Caledonia. One of the specimens stored at the local herbarium had a strip of bark with a remarkably green phloem tissue attached to the sheet containing over 4 wt% Ni. This study aimed to collect field samples from the original H. austrocaledonicus locality to confirm the nature of the green ‘nickel-rich phloem’ in this taxon and to systematically assess the occurrence of Ni hyperaccumulation in H. austrocaledonicus and Hybanthus caledonicus populations. Methods X-ray fluorescence spectroscopy scanning of all collections of the genus Hybanthus (236 specimens) was undertaken at the Herbarium of New Caledonia to reveal incidences of Ni accumulation in populations of H. austrocaledonicus and H. caledonicus. In parallel, micro-analytical investigations were performed via synchrotron X-ray fluorescence microscopy (XFM) and scanning electron microscopy with X-ray microanalysis (SEM-EDS). Key Results The extensive scanning demonstrated that Ni hyperaccumulation is not a characteristic common to all populations in the endemic Hybanthus species. Synchrotron XFM revealed that Ni was exclusively concentrated in the epidermal cells of the leaf blade and petiole, conforming with the majority of (tropical) Ni hyperaccumulator plants studied to date. SEM-EDS of freeze-dried and frozen-hydrated samples revealed the presence of dense solid deposits in the phloem bundles that contained >8 wt% nickel. Conclusions The occurrence of extremely Ni-rich green phloem tissues appears to be a characteristic feature of tropical Ni hyperaccumulator plants. |
| وصف الملف: | text/html; application/octet-stream |
| تدمد: | 1095-8290 0305-7364 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fcf5976329ca0eaeb357387e0709e37 https://pubmed.ncbi.nlm.nih.gov/32577727 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....1fcf5976329ca0eaeb357387e0709e37 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10958290 03057364 |
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