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Megapixel imaging of (micro)nutrients in mature barley grains

Understanding the accumulation and distribution of essential nutrients in cereals is of primary importance for improving the nutritional quality of this staple food. While recent studies have improved the understanding of micronutrient loading into the barley grain, a detailed characterization of th...

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Autores principales: Lombi, Enzo, Smith, Euan, Hansen, Thomas H., Paterson, David, de Jonge, Martin D., Howard, Daryl L., Persson, Daniel P., Husted, Søren, Ryan, Chris, Schjoerring, Jan K.
Formato: Texto
Lenguaje:English
Publicado: Oxford University Press 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2993915/
https://www.ncbi.nlm.nih.gov/pubmed/20819790
http://dx.doi.org/10.1093/jxb/erq270
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author Lombi, Enzo
Smith, Euan
Hansen, Thomas H.
Paterson, David
de Jonge, Martin D.
Howard, Daryl L.
Persson, Daniel P.
Husted, Søren
Ryan, Chris
Schjoerring, Jan K.
author_facet Lombi, Enzo
Smith, Euan
Hansen, Thomas H.
Paterson, David
de Jonge, Martin D.
Howard, Daryl L.
Persson, Daniel P.
Husted, Søren
Ryan, Chris
Schjoerring, Jan K.
author_sort Lombi, Enzo
collection PubMed
description Understanding the accumulation and distribution of essential nutrients in cereals is of primary importance for improving the nutritional quality of this staple food. While recent studies have improved the understanding of micronutrient loading into the barley grain, a detailed characterization of the distribution of micronutrients within the grain is still lacking. High-definition synchrotron X-ray fluorescence was used to investigate the distribution and association of essential elements in barley grain at the micro scale. Micronutrient distribution within the scutellum and the embryo was shown to be highly variable between elements in relation to various morphological features. In the rest of the grain, the distribution of some elements such as Cu and Zn was not limited to the aleurone layer but extended into the endosperm. This pattern of distribution was less marked in the case of Fe and, in particular, Mn. A significant difference in element distribution was also found between the ventral and dorsal part of the grains. The correlation between the elements was not consistent between and within tissues, indicating that the transport and storage of elements is highly regulated. The complexity of the spatial distribution and associations has important implications for improving the nutritional content of cereal crops such as barley.
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spelling pubmed-29939152010-12-01 Megapixel imaging of (micro)nutrients in mature barley grains Lombi, Enzo Smith, Euan Hansen, Thomas H. Paterson, David de Jonge, Martin D. Howard, Daryl L. Persson, Daniel P. Husted, Søren Ryan, Chris Schjoerring, Jan K. J Exp Bot Research Papers Understanding the accumulation and distribution of essential nutrients in cereals is of primary importance for improving the nutritional quality of this staple food. While recent studies have improved the understanding of micronutrient loading into the barley grain, a detailed characterization of the distribution of micronutrients within the grain is still lacking. High-definition synchrotron X-ray fluorescence was used to investigate the distribution and association of essential elements in barley grain at the micro scale. Micronutrient distribution within the scutellum and the embryo was shown to be highly variable between elements in relation to various morphological features. In the rest of the grain, the distribution of some elements such as Cu and Zn was not limited to the aleurone layer but extended into the endosperm. This pattern of distribution was less marked in the case of Fe and, in particular, Mn. A significant difference in element distribution was also found between the ventral and dorsal part of the grains. The correlation between the elements was not consistent between and within tissues, indicating that the transport and storage of elements is highly regulated. The complexity of the spatial distribution and associations has important implications for improving the nutritional content of cereal crops such as barley. Oxford University Press 2011-01 2010-09-05 /pmc/articles/PMC2993915/ /pubmed/20819790 http://dx.doi.org/10.1093/jxb/erq270 Text en © 2010 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. This paper is available online free of all access charges (see http://jxb.oxfordjournals.org/open_access.html for further details)
spellingShingle Research Papers
Lombi, Enzo
Smith, Euan
Hansen, Thomas H.
Paterson, David
de Jonge, Martin D.
Howard, Daryl L.
Persson, Daniel P.
Husted, Søren
Ryan, Chris
Schjoerring, Jan K.
Megapixel imaging of (micro)nutrients in mature barley grains
title Megapixel imaging of (micro)nutrients in mature barley grains
title_full Megapixel imaging of (micro)nutrients in mature barley grains
title_fullStr Megapixel imaging of (micro)nutrients in mature barley grains
title_full_unstemmed Megapixel imaging of (micro)nutrients in mature barley grains
title_short Megapixel imaging of (micro)nutrients in mature barley grains
title_sort megapixel imaging of (micro)nutrients in mature barley grains
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2993915/
https://www.ncbi.nlm.nih.gov/pubmed/20819790
http://dx.doi.org/10.1093/jxb/erq270
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