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Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate

Selenium (Se) is an essential trace element for humans. About 70% of the regions in China, including most of the Tibetan Plateau, are faced with Se deficiency problems. Turnip is mainly distributed around the Tibetan Plateau and is one of the few local crops. In the present study, we compared the ab...

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Autores principales: Li, Xiong, Wu, Yuansheng, Li, Boqun, Yang, Yonghong, Yang, Yongping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5758583/
https://www.ncbi.nlm.nih.gov/pubmed/29354147
http://dx.doi.org/10.3389/fpls.2017.02207
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author Li, Xiong
Wu, Yuansheng
Li, Boqun
Yang, Yonghong
Yang, Yongping
author_facet Li, Xiong
Wu, Yuansheng
Li, Boqun
Yang, Yonghong
Yang, Yongping
author_sort Li, Xiong
collection PubMed
description Selenium (Se) is an essential trace element for humans. About 70% of the regions in China, including most of the Tibetan Plateau, are faced with Se deficiency problems. Turnip is mainly distributed around the Tibetan Plateau and is one of the few local crops. In the present study, we compared the absorption and translocation differences of Se (IV) selenite and Se (VI) selenate in turnip. The results showed that Se treatment, either by soil addition (0.2–2 mg Se kg(−1) dry soil) or by foliar spraying (50–200 mg L(−1) Se), could significantly increase the Se concentrations in turnips, and 0.5 mg Se (IV) or Se (VI) kg(−1) dry matter in soils could improve the biomasses of turnips. Moreover, turnip absorbed significantly more Se (VI) than Se (IV) at the same concentration and also transferred much more Se (VI) from roots to leaves. Based on the Se concentrations, as well as the bioconcentration factors and translocation coefficients, we considered that turnip might be a potential Se indicator plant. Subsequently, we estimated the daily Se intake for adults based on the Se concentrations in turnip roots. The results indicated that Se (IV) should be more suitable as an artificial Se fertilizer for turnips, although the levels found in most samples in this study could cause selenosis to humans. In addition, we also estimated the optimum and maximum Se concentrations for treating turnips based on the linear relations between Se concentrations in turnip roots and Se treatment concentrations. The results provided preliminary and useful information about Se biofortification in turnips.
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spelling pubmed-57585832018-01-19 Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate Li, Xiong Wu, Yuansheng Li, Boqun Yang, Yonghong Yang, Yongping Front Plant Sci Plant Science Selenium (Se) is an essential trace element for humans. About 70% of the regions in China, including most of the Tibetan Plateau, are faced with Se deficiency problems. Turnip is mainly distributed around the Tibetan Plateau and is one of the few local crops. In the present study, we compared the absorption and translocation differences of Se (IV) selenite and Se (VI) selenate in turnip. The results showed that Se treatment, either by soil addition (0.2–2 mg Se kg(−1) dry soil) or by foliar spraying (50–200 mg L(−1) Se), could significantly increase the Se concentrations in turnips, and 0.5 mg Se (IV) or Se (VI) kg(−1) dry matter in soils could improve the biomasses of turnips. Moreover, turnip absorbed significantly more Se (VI) than Se (IV) at the same concentration and also transferred much more Se (VI) from roots to leaves. Based on the Se concentrations, as well as the bioconcentration factors and translocation coefficients, we considered that turnip might be a potential Se indicator plant. Subsequently, we estimated the daily Se intake for adults based on the Se concentrations in turnip roots. The results indicated that Se (IV) should be more suitable as an artificial Se fertilizer for turnips, although the levels found in most samples in this study could cause selenosis to humans. In addition, we also estimated the optimum and maximum Se concentrations for treating turnips based on the linear relations between Se concentrations in turnip roots and Se treatment concentrations. The results provided preliminary and useful information about Se biofortification in turnips. Frontiers Media S.A. 2018-01-04 /pmc/articles/PMC5758583/ /pubmed/29354147 http://dx.doi.org/10.3389/fpls.2017.02207 Text en Copyright © 2018 Li, Wu, Li, Yang and Yang. 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
Li, Xiong
Wu, Yuansheng
Li, Boqun
Yang, Yonghong
Yang, Yongping
Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate
title Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate
title_full Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate
title_fullStr Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate
title_full_unstemmed Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate
title_short Selenium Accumulation Characteristics and Biofortification Potentiality in Turnip (Brassica rapa var. rapa) Supplied with Selenite or Selenate
title_sort selenium accumulation characteristics and biofortification potentiality in turnip (brassica rapa var. rapa) supplied with selenite or selenate
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5758583/
https://www.ncbi.nlm.nih.gov/pubmed/29354147
http://dx.doi.org/10.3389/fpls.2017.02207
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