NanoSIMS analysis of arsenic and selenium in cereal grain
Cereals are an important source of selenium (Se) to humans and many people have inadequate intakes of this essential trace element. Conversely, arsenic (As) is toxic and may accumulate in rice grain at levels that pose a health risk. Knowledge of the localization of selenium and arsenic within the c...
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| Veröffentlicht in: | The New phytologist 2010-01, Vol.185 (2), p.434-445 |
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| creator | Moore, Katie L Schröder, Markus Lombi, Enzo Zhao, Fang-Jie McGrath, Steve P Hawkesford, Malcolm J Shewry, Peter R Grovenor, Chris R.M |
| description | Cereals are an important source of selenium (Se) to humans and many people have inadequate intakes of this essential trace element. Conversely, arsenic (As) is toxic and may accumulate in rice grain at levels that pose a health risk. Knowledge of the localization of selenium and arsenic within the cereal grain will aid understanding of their deposition patterns and the impact of processes such as milling. High-resolution secondary ion mass spectrometry (NanoSIMS) was used to determine the localization of Se in wheat (Triticum aestivum) and As in rice (Oryza sativa). Combined synchrotron X-ray fluorescence (S-XRF) and NanoSIMS analysis utilized the strengths of both techniques. Selenium was concentrated in the protein surrounding the starch granules in the starchy endosperm cells and more homogeneously distributed in the aleurone cells but with Se-rich hotspots. Arsenic was concentrated in the subaleurone endosperm cells in association with the protein matrix rather than in the aleurone cells. NanoSIMS indicated that the high intensity of As identified in the S-XRF image was localized in micron-sized hotspots near the ovular vascular trace and nucellar projection. This is the first study showing subcellular localization in grain samples containing parts per million concentrations of Se and As. There is good quantitative agreement between NanoSIMS and S-XRF. |
| doi_str_mv | 10.1111/j.1469-8137.2009.03071.x |
| format | Article |
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(ANL), Argonne, IL (United States). Advanced Photon Source (APS)</creatorcontrib><description>Cereals are an important source of selenium (Se) to humans and many people have inadequate intakes of this essential trace element. Conversely, arsenic (As) is toxic and may accumulate in rice grain at levels that pose a health risk. Knowledge of the localization of selenium and arsenic within the cereal grain will aid understanding of their deposition patterns and the impact of processes such as milling. High-resolution secondary ion mass spectrometry (NanoSIMS) was used to determine the localization of Se in wheat (Triticum aestivum) and As in rice (Oryza sativa). Combined synchrotron X-ray fluorescence (S-XRF) and NanoSIMS analysis utilized the strengths of both techniques. Selenium was concentrated in the protein surrounding the starch granules in the starchy endosperm cells and more homogeneously distributed in the aleurone cells but with Se-rich hotspots. Arsenic was concentrated in the subaleurone endosperm cells in association with the protein matrix rather than in the aleurone cells. NanoSIMS indicated that the high intensity of As identified in the S-XRF image was localized in micron-sized hotspots near the ovular vascular trace and nucellar projection. This is the first study showing subcellular localization in grain samples containing parts per million concentrations of Se and As. There is good quantitative agreement between NanoSIMS and S-XRF.</description><identifier>ISSN: 0028-646X</identifier><identifier>EISSN: 1469-8137</identifier><identifier>DOI: 10.1111/j.1469-8137.2009.03071.x</identifier><identifier>PMID: 19895416</identifier><language>eng</language><publisher>Oxford, UK: Oxford, UK : Blackwell Publishing Ltd</publisher><subject>60 APPLIED LIFE SCIENCES ; Aleurone cells ; ARSENIC ; arsenic (As) ; Arsenic - analysis ; BASIC BIOLOGICAL SCIENCES ; Cells ; cereal ; CEREALS ; DEPOSITION ; ELEMENTS ; ENDOSPERM ; Endosperm - chemistry ; Endosperm - cytology ; FLUORESCENCE ; Grain ; Grains ; Health risks ; Hot spots ; IONS ; LEVELS ; Localization ; Mass spectrometry ; MASS SPECTROSCOPY ; MILLING ; NanoSIMS ; Oryza - chemistry ; Oryza - cytology ; PROTEINS ; Proteins - chemistry ; RICE ; rice (Oryza sativa) ; Secondary ion mass spectrometry ; secondary ion mass spectrometry (SIMS) ; Seeds - chemistry ; Seeds - cytology ; SELENIUM ; selenium (Se) ; Selenium - analysis ; Spectrometry, Mass, Secondary Ion - methods ; Spectrometry, X-Ray Emission - methods ; STARCH ; Starches ; subcellular localization ; Synchrotrons ; TRACE AMOUNTS ; Trace elements ; Triticum - chemistry ; Triticum - cytology ; Triticum aestivum ; WHEAT ; wheat (Triticum aestivum)</subject><ispartof>The New phytologist, 2010-01, Vol.185 (2), p.434-445</ispartof><rights>Copyright 2010 New Phytologist Trust</rights><rights>The Authors (2009). Journal compilation © New Phytologist (2009)</rights><rights>Copyright Wiley Subscription Services, Inc. Jan 2010</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6471-92916aca525d88d74d0266dead747b71998a456bf6ae7399b0c6e6527977df533</citedby><cites>FETCH-LOGICAL-c6471-92916aca525d88d74d0266dead747b71998a456bf6ae7399b0c6e6527977df533</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/25609626$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/25609626$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>230,314,780,784,803,885,1417,1433,27924,27925,45574,45575,46409,46833,58017,58250</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19895416$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1047324$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Moore, Katie L</creatorcontrib><creatorcontrib>Schröder, Markus</creatorcontrib><creatorcontrib>Lombi, Enzo</creatorcontrib><creatorcontrib>Zhao, Fang-Jie</creatorcontrib><creatorcontrib>McGrath, Steve P</creatorcontrib><creatorcontrib>Hawkesford, Malcolm J</creatorcontrib><creatorcontrib>Shewry, Peter R</creatorcontrib><creatorcontrib>Grovenor, Chris R.M</creatorcontrib><creatorcontrib>Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)</creatorcontrib><title>NanoSIMS analysis of arsenic and selenium in cereal grain</title><title>The New phytologist</title><addtitle>New Phytol</addtitle><description>Cereals are an important source of selenium (Se) to humans and many people have inadequate intakes of this essential trace element. Conversely, arsenic (As) is toxic and may accumulate in rice grain at levels that pose a health risk. Knowledge of the localization of selenium and arsenic within the cereal grain will aid understanding of their deposition patterns and the impact of processes such as milling. High-resolution secondary ion mass spectrometry (NanoSIMS) was used to determine the localization of Se in wheat (Triticum aestivum) and As in rice (Oryza sativa). Combined synchrotron X-ray fluorescence (S-XRF) and NanoSIMS analysis utilized the strengths of both techniques. Selenium was concentrated in the protein surrounding the starch granules in the starchy endosperm cells and more homogeneously distributed in the aleurone cells but with Se-rich hotspots. Arsenic was concentrated in the subaleurone endosperm cells in association with the protein matrix rather than in the aleurone cells. NanoSIMS indicated that the high intensity of As identified in the S-XRF image was localized in micron-sized hotspots near the ovular vascular trace and nucellar projection. This is the first study showing subcellular localization in grain samples containing parts per million concentrations of Se and As. There is good quantitative agreement between NanoSIMS and S-XRF.</description><subject>60 APPLIED LIFE SCIENCES</subject><subject>Aleurone cells</subject><subject>ARSENIC</subject><subject>arsenic (As)</subject><subject>Arsenic - analysis</subject><subject>BASIC BIOLOGICAL SCIENCES</subject><subject>Cells</subject><subject>cereal</subject><subject>CEREALS</subject><subject>DEPOSITION</subject><subject>ELEMENTS</subject><subject>ENDOSPERM</subject><subject>Endosperm - chemistry</subject><subject>Endosperm - cytology</subject><subject>FLUORESCENCE</subject><subject>Grain</subject><subject>Grains</subject><subject>Health risks</subject><subject>Hot spots</subject><subject>IONS</subject><subject>LEVELS</subject><subject>Localization</subject><subject>Mass spectrometry</subject><subject>MASS SPECTROSCOPY</subject><subject>MILLING</subject><subject>NanoSIMS</subject><subject>Oryza - chemistry</subject><subject>Oryza - cytology</subject><subject>PROTEINS</subject><subject>Proteins - chemistry</subject><subject>RICE</subject><subject>rice (Oryza sativa)</subject><subject>Secondary ion mass spectrometry</subject><subject>secondary ion mass spectrometry (SIMS)</subject><subject>Seeds - chemistry</subject><subject>Seeds - cytology</subject><subject>SELENIUM</subject><subject>selenium (Se)</subject><subject>Selenium - analysis</subject><subject>Spectrometry, Mass, Secondary Ion - methods</subject><subject>Spectrometry, X-Ray Emission - methods</subject><subject>STARCH</subject><subject>Starches</subject><subject>subcellular localization</subject><subject>Synchrotrons</subject><subject>TRACE AMOUNTS</subject><subject>Trace elements</subject><subject>Triticum - chemistry</subject><subject>Triticum - cytology</subject><subject>Triticum aestivum</subject><subject>WHEAT</subject><subject>wheat (Triticum aestivum)</subject><issn>0028-646X</issn><issn>1469-8137</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUtP3DAUha2Kqgy0P6ElAoldUj_i63jBAiFakHhUmiJ1Z3kchzrKxGAngvn3OGREpa7wxle-3znX9kEoI7ggaX1vC1KCzCvCREExlgVmWJDi-QNavDV20AJjWuVQwp9dtBdjixPJgX5Cu0RWkpcEFkje6N4vL6-Xme51t4kuZr7JdIi2dyad1Vm0XarHdeb6zNhgdZfdB-36z-hjo7tov2z3fXT34_z32UV-dfvz8uz0KjdQCpJLKglooznldVXVoqwxBaitTqVYCSJlpUsOqwa0FUzKFTZggVMhhagbztg-Opx9fRycisYN1vw1vu-tGRTBpWC0TNDxDD0E_zjaOKi1i8Z2ne6tH6OihAoCgr0HhC149B_Y-jGkP0oMJ5RRVrGJqmbKBB9jsI16CG6twybdTE1RqVZNiagpETVFpV6jUs9J-m07YFytbf1PuM0mAScz8OQ6u3m3sbr5dTFVSf911rdx8OFNTzlgCXTyP5j7jfZK3wcX1d2SYsIwEel1UrAXeNaxEA</recordid><startdate>201001</startdate><enddate>201001</enddate><creator>Moore, Katie L</creator><creator>Schröder, Markus</creator><creator>Lombi, Enzo</creator><creator>Zhao, Fang-Jie</creator><creator>McGrath, Steve P</creator><creator>Hawkesford, Malcolm J</creator><creator>Shewry, Peter R</creator><creator>Grovenor, Chris R.M</creator><general>Oxford, UK : Blackwell Publishing Ltd</general><general>Blackwell Publishing</general><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7SN</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H95</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7UA</scope><scope>OTOTI</scope></search><sort><creationdate>201001</creationdate><title>NanoSIMS analysis of arsenic and selenium in cereal grain</title><author>Moore, Katie L ; Schröder, Markus ; Lombi, Enzo ; Zhao, Fang-Jie ; McGrath, Steve P ; Hawkesford, Malcolm J ; Shewry, Peter R ; Grovenor, Chris R.M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c6471-92916aca525d88d74d0266dead747b71998a456bf6ae7399b0c6e6527977df533</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>60 APPLIED LIFE SCIENCES</topic><topic>Aleurone cells</topic><topic>ARSENIC</topic><topic>arsenic (As)</topic><topic>Arsenic - analysis</topic><topic>BASIC BIOLOGICAL SCIENCES</topic><topic>Cells</topic><topic>cereal</topic><topic>CEREALS</topic><topic>DEPOSITION</topic><topic>ELEMENTS</topic><topic>ENDOSPERM</topic><topic>Endosperm - chemistry</topic><topic>Endosperm - cytology</topic><topic>FLUORESCENCE</topic><topic>Grain</topic><topic>Grains</topic><topic>Health risks</topic><topic>Hot spots</topic><topic>IONS</topic><topic>LEVELS</topic><topic>Localization</topic><topic>Mass spectrometry</topic><topic>MASS SPECTROSCOPY</topic><topic>MILLING</topic><topic>NanoSIMS</topic><topic>Oryza - chemistry</topic><topic>Oryza - cytology</topic><topic>PROTEINS</topic><topic>Proteins - chemistry</topic><topic>RICE</topic><topic>rice (Oryza sativa)</topic><topic>Secondary ion mass spectrometry</topic><topic>secondary ion mass spectrometry (SIMS)</topic><topic>Seeds - chemistry</topic><topic>Seeds - cytology</topic><topic>SELENIUM</topic><topic>selenium (Se)</topic><topic>Selenium - analysis</topic><topic>Spectrometry, Mass, Secondary Ion - methods</topic><topic>Spectrometry, X-Ray Emission - methods</topic><topic>STARCH</topic><topic>Starches</topic><topic>subcellular localization</topic><topic>Synchrotrons</topic><topic>TRACE AMOUNTS</topic><topic>Trace elements</topic><topic>Triticum - chemistry</topic><topic>Triticum - cytology</topic><topic>Triticum aestivum</topic><topic>WHEAT</topic><topic>wheat (Triticum aestivum)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Moore, Katie L</creatorcontrib><creatorcontrib>Schröder, Markus</creatorcontrib><creatorcontrib>Lombi, Enzo</creatorcontrib><creatorcontrib>Zhao, Fang-Jie</creatorcontrib><creatorcontrib>McGrath, Steve P</creatorcontrib><creatorcontrib>Hawkesford, Malcolm J</creatorcontrib><creatorcontrib>Shewry, Peter R</creatorcontrib><creatorcontrib>Grovenor, Chris R.M</creatorcontrib><creatorcontrib>Argonne National Lab. 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(ANL), Argonne, IL (United States). Advanced Photon Source (APS)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>NanoSIMS analysis of arsenic and selenium in cereal grain</atitle><jtitle>The New phytologist</jtitle><addtitle>New Phytol</addtitle><date>2010-01</date><risdate>2010</risdate><volume>185</volume><issue>2</issue><spage>434</spage><epage>445</epage><pages>434-445</pages><issn>0028-646X</issn><eissn>1469-8137</eissn><abstract>Cereals are an important source of selenium (Se) to humans and many people have inadequate intakes of this essential trace element. Conversely, arsenic (As) is toxic and may accumulate in rice grain at levels that pose a health risk. Knowledge of the localization of selenium and arsenic within the cereal grain will aid understanding of their deposition patterns and the impact of processes such as milling. High-resolution secondary ion mass spectrometry (NanoSIMS) was used to determine the localization of Se in wheat (Triticum aestivum) and As in rice (Oryza sativa). Combined synchrotron X-ray fluorescence (S-XRF) and NanoSIMS analysis utilized the strengths of both techniques. Selenium was concentrated in the protein surrounding the starch granules in the starchy endosperm cells and more homogeneously distributed in the aleurone cells but with Se-rich hotspots. Arsenic was concentrated in the subaleurone endosperm cells in association with the protein matrix rather than in the aleurone cells. NanoSIMS indicated that the high intensity of As identified in the S-XRF image was localized in micron-sized hotspots near the ovular vascular trace and nucellar projection. This is the first study showing subcellular localization in grain samples containing parts per million concentrations of Se and As. There is good quantitative agreement between NanoSIMS and S-XRF.</abstract><cop>Oxford, UK</cop><pub>Oxford, UK : Blackwell Publishing Ltd</pub><pmid>19895416</pmid><doi>10.1111/j.1469-8137.2009.03071.x</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 60 APPLIED LIFE SCIENCES Aleurone cells ARSENIC arsenic (As) Arsenic - analysis BASIC BIOLOGICAL SCIENCES Cells cereal CEREALS DEPOSITION ELEMENTS ENDOSPERM Endosperm - chemistry Endosperm - cytology FLUORESCENCE Grain Grains Health risks Hot spots IONS LEVELS Localization Mass spectrometry MASS SPECTROSCOPY MILLING NanoSIMS Oryza - chemistry Oryza - cytology PROTEINS Proteins - chemistry RICE rice (Oryza sativa) Secondary ion mass spectrometry secondary ion mass spectrometry (SIMS) Seeds - chemistry Seeds - cytology SELENIUM selenium (Se) Selenium - analysis Spectrometry, Mass, Secondary Ion - methods Spectrometry, X-Ray Emission - methods STARCH Starches subcellular localization Synchrotrons TRACE AMOUNTS Trace elements Triticum - chemistry Triticum - cytology Triticum aestivum WHEAT wheat (Triticum aestivum) |
| title | NanoSIMS analysis of arsenic and selenium in cereal grain |
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