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The Journey of Arsenic from Soil to Grain in Rice

Arsenic (As) is a non-essential toxic metalloid whose elevated concentration in rice grains is a serious issue both for rice yield and quality, and for human health. The rice-As interactions, hence, have been studied extensively in past few decades. A deep understanding of factors influencing As upt...

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Autores principales: Awasthi, Surabhi, Chauhan, Reshu, Srivastava, Sudhakar, Tripathi, Rudra D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476935/
https://www.ncbi.nlm.nih.gov/pubmed/28676805
http://dx.doi.org/10.3389/fpls.2017.01007
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author Awasthi, Surabhi
Chauhan, Reshu
Srivastava, Sudhakar
Tripathi, Rudra D.
author_facet Awasthi, Surabhi
Chauhan, Reshu
Srivastava, Sudhakar
Tripathi, Rudra D.
author_sort Awasthi, Surabhi
collection PubMed
description Arsenic (As) is a non-essential toxic metalloid whose elevated concentration in rice grains is a serious issue both for rice yield and quality, and for human health. The rice-As interactions, hence, have been studied extensively in past few decades. A deep understanding of factors influencing As uptake and transport from soil to grains can be helpful to tackle this issue so as to minimize grain As levels. As uptake at the root surface by rice plants depends on factors like iron plaque and radial oxygen loss. There is involvement of a number of transporters viz., phosphate transporters and aquaglyceroporins in the uptake and transport of different As species and in the movement to subcellular compartments. These processes are also affected by sulfur availability and consequently on the level of thiol (-SH)-containing As binding peptides viz., glutathione (GSH) and phytochelatins (PCs). Further, the role of phloem in As movement to the grains is also suggested. This review presents a detailed map of journey of As from soil to the grains. The implications for the utilization of available knowledge in minimizing As in rice grains are presented.
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spelling pubmed-54769352017-07-04 The Journey of Arsenic from Soil to Grain in Rice Awasthi, Surabhi Chauhan, Reshu Srivastava, Sudhakar Tripathi, Rudra D. Front Plant Sci Plant Science Arsenic (As) is a non-essential toxic metalloid whose elevated concentration in rice grains is a serious issue both for rice yield and quality, and for human health. The rice-As interactions, hence, have been studied extensively in past few decades. A deep understanding of factors influencing As uptake and transport from soil to grains can be helpful to tackle this issue so as to minimize grain As levels. As uptake at the root surface by rice plants depends on factors like iron plaque and radial oxygen loss. There is involvement of a number of transporters viz., phosphate transporters and aquaglyceroporins in the uptake and transport of different As species and in the movement to subcellular compartments. These processes are also affected by sulfur availability and consequently on the level of thiol (-SH)-containing As binding peptides viz., glutathione (GSH) and phytochelatins (PCs). Further, the role of phloem in As movement to the grains is also suggested. This review presents a detailed map of journey of As from soil to the grains. The implications for the utilization of available knowledge in minimizing As in rice grains are presented. Frontiers Media S.A. 2017-06-20 /pmc/articles/PMC5476935/ /pubmed/28676805 http://dx.doi.org/10.3389/fpls.2017.01007 Text en Copyright © 2017 Awasthi, Chauhan, Srivastava and Tripathi. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Awasthi, Surabhi
Chauhan, Reshu
Srivastava, Sudhakar
Tripathi, Rudra D.
The Journey of Arsenic from Soil to Grain in Rice
title The Journey of Arsenic from Soil to Grain in Rice
title_full The Journey of Arsenic from Soil to Grain in Rice
title_fullStr The Journey of Arsenic from Soil to Grain in Rice
title_full_unstemmed The Journey of Arsenic from Soil to Grain in Rice
title_short The Journey of Arsenic from Soil to Grain in Rice
title_sort journey of arsenic from soil to grain in rice
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476935/
https://www.ncbi.nlm.nih.gov/pubmed/28676805
http://dx.doi.org/10.3389/fpls.2017.01007
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