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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/nph.17440
|2 doi
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|a pubmed24n1082.xml
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|a (NLM)33914919
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Sheraz, Sadia
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Subcellular dynamics studies of iron reveal how tissue-specific distribution patterns are established in developing wheat grains
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 21.07.2021
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|a Date Revised 21.07.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.
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|a Understanding the mechanisms of iron trafficking in plants is key to enhancing the nutritional quality of crops. Because it is difficult to image iron in transit, we currently have an incomplete picture of the route(s) of iron translocation in developing seeds and how the tissue-specific distribution is established. We have used a novel approach, combining iron-57 (57 Fe) isotope labelling and nanoscale secondary ion mass spectrometry (NanoSIMS), to visualize iron translocation between tissues and within cells in immature wheat grain, Triticum aestivum. This enabled us to track the main route of iron transport from maternal tissues to the embryo through the different cell types. Further evidence for this route was provided by genetically diverting iron into storage vacuoles, with confirmation provided by histological staining and transmission electron microscopy energy dispersive X-ray spectroscopy (TEM-EDS). Almost all iron in both control and transgenic grains was found in intracellular bodies, indicating symplastic rather than apoplastic transport. Furthermore, a new type of iron body, highly enriched in 57 Fe, was observed in aleurone cells and may represent iron being delivered to phytate globoids. Correlation of the 57 Fe enrichment profiles obtained by NanoSIMS with tissue-specific gene expression provides an updated model of iron homeostasis in cereal grains with relevance for future biofortification strategies
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a NanoSIMS
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|a aleurone
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4 |
|a iron
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|a nicotianamine
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|a pulse-chase
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4 |
|a trafficking
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|a wheat
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|a Phytic Acid
|2 NLM
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| 650 |
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|a 7IGF0S7R8I
|2 NLM
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| 650 |
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|a Iron
|2 NLM
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| 650 |
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|a E1UOL152H7
|2 NLM
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| 700 |
1 |
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|a Wan, Yongfang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Venter, Eudri
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Verma, Shailender K
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xiong, Qing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Waites, Joshua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Connorton, James M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shewry, Peter R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Moore, Katie L
|e verfasserin
|4 aut
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| 700 |
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|a Balk, Janneke
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 231(2021), 4 vom: 01. Aug., Seite 1644-1657
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
1 |
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|g volume:231
|g year:2021
|g number:4
|g day:01
|g month:08
|g pages:1644-1657
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|u http://dx.doi.org/10.1111/nph.17440
|3 Volltext
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|d 231
|j 2021
|e 4
|b 01
|c 08
|h 1644-1657
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