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Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants

Metal hyperaccumulation is a rare and fascinating phenomenon, whereby plants actively accumulate high concentrations of metal ions in their above-ground tissues. Enhanced uptake and root-to-shoot translocation of specific metal ions coupled with an increased capacity for detoxification and sequestra...

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Autores principales: van der Pas, Llewelyn, Ingle, Robert A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359332/
https://www.ncbi.nlm.nih.gov/pubmed/30621231
http://dx.doi.org/10.3390/plants8010011
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author van der Pas, Llewelyn
Ingle, Robert A.
author_facet van der Pas, Llewelyn
Ingle, Robert A.
author_sort van der Pas, Llewelyn
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description Metal hyperaccumulation is a rare and fascinating phenomenon, whereby plants actively accumulate high concentrations of metal ions in their above-ground tissues. Enhanced uptake and root-to-shoot translocation of specific metal ions coupled with an increased capacity for detoxification and sequestration of these ions are thought to constitute the physiological basis of the hyperaccumulation phenotype. Nickel hyperaccumulators were the first to be discovered and are the most numerous, accounting for some seventy-five percent of all known hyperaccumulators. However, our understanding of the molecular basis of the physiological processes underpinning Ni hyperaccumulation has lagged behind that of Zn and Cd hyperaccumulation, in large part due to a lack of genomic resources for Ni hyperaccumulators. The advent of RNA-Seq technology, which allows both transcriptome assembly and profiling of global gene expression without the need for a reference genome, has offered a new route for the analysis of Ni hyperaccumulators, and several such studies have recently been reported. Here we review the current state of our understanding of the molecular basis of Ni hyperaccumulation in plants, with an emphasis on insights gained from recent RNA-Seq experiments, highlight commonalities and differences between Ni hyperaccumulators, and suggest potential future avenues of research in this field.
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spelling pubmed-63593322019-02-11 Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants van der Pas, Llewelyn Ingle, Robert A. Plants (Basel) Review Metal hyperaccumulation is a rare and fascinating phenomenon, whereby plants actively accumulate high concentrations of metal ions in their above-ground tissues. Enhanced uptake and root-to-shoot translocation of specific metal ions coupled with an increased capacity for detoxification and sequestration of these ions are thought to constitute the physiological basis of the hyperaccumulation phenotype. Nickel hyperaccumulators were the first to be discovered and are the most numerous, accounting for some seventy-five percent of all known hyperaccumulators. However, our understanding of the molecular basis of the physiological processes underpinning Ni hyperaccumulation has lagged behind that of Zn and Cd hyperaccumulation, in large part due to a lack of genomic resources for Ni hyperaccumulators. The advent of RNA-Seq technology, which allows both transcriptome assembly and profiling of global gene expression without the need for a reference genome, has offered a new route for the analysis of Ni hyperaccumulators, and several such studies have recently been reported. Here we review the current state of our understanding of the molecular basis of Ni hyperaccumulation in plants, with an emphasis on insights gained from recent RNA-Seq experiments, highlight commonalities and differences between Ni hyperaccumulators, and suggest potential future avenues of research in this field. MDPI 2019-01-04 /pmc/articles/PMC6359332/ /pubmed/30621231 http://dx.doi.org/10.3390/plants8010011 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
van der Pas, Llewelyn
Ingle, Robert A.
Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants
title Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants
title_full Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants
title_fullStr Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants
title_full_unstemmed Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants
title_short Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants
title_sort towards an understanding of the molecular basis of nickel hyperaccumulation in plants
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359332/
https://www.ncbi.nlm.nih.gov/pubmed/30621231
http://dx.doi.org/10.3390/plants8010011
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