Convergent patterns of tissue-level distribution of elements in different tropical woody nickel hyperaccumulator species from Borneo Island

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dc.contributor.authorAbubakari, Farida
dc.contributor.authorMesjasz-Przybyłowicz, Jolanta
dc.contributor.authorPrzybyłowicz, Wojciech J
dc.date.accessioned2022-04-05T13:24:28Z
dc.date.available2022-04-05T13:24:28Z
dc.date.issued2020-11-13
dc.description.abstractAbstract The Malaysian state of Sabah on the Island of Borneo has recently emerged as a global hotspot of nickel hyperaccumulator plants. This study focuses on the tissue-level distribution of nickel and other physiologically relevant elements in hyperaccumulator plants with distinct phylogenetical affinities. The roots, old stems, young stems and leaves of Flacourtia kinabaluensis (Salicaceae), Actephila alanbakeri (Phyllanthaceae), Psychotria sarmentosa (Rubiaceae) and young stems and leaves of Glochidion brunneum (Phyllanthaceae) were studied using nuclear microprobe (micro-PIXE and micro-BS) analysis. The tissue-level distribution of nickel found in these species has the same overall pattern as in most other hyperaccumulator plants studied previously, with substantial enrichment in the epidermal cells and in the phloem. This study also revealed enrichment of potassium in the spongy and palisade mesophyll of the studied species. Calcium, chlorine, manganese and cobalt were found to be enriched in the phloem and also concentrated in the epidermis and cortex of the studied species. Although hyperaccumulation ostensibly evolved numerous times independently, the basic mechanisms inferred from tissue elemental localization are convergent in these tropical woody species from Borneo Island.en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/124413
dc.language.isoen_ZAen_ZA
dc.subjectElemental distributionen_ZA
dc.subjectelemental mapsen_ZA
dc.subjecthyperaccumulatoren_ZA
dc.subjectnuclear microprobeen_ZA
dc.titleConvergent patterns of tissue-level distribution of elements in different tropical woody nickel hyperaccumulator species from Borneo Islanden_ZA
dc.typeArticleen_ZA
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