Isotopic discrimination of zinc in higher plants
• The extent of isotopic discrimination of transition metals in biological processes is poorly understood but potentially has important applications in plant and biogeochemical studies. • Using multicollector inductively coupled plasma (ICP) mass spectrometry, we measured isotopic fractionation of z...
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| Veröffentlicht in: | The New phytologist 2005-03, Vol.165 (3), p.703-710 |
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| container_title | The New phytologist |
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| creator | Weiss, D. J. Mason, T. F. D. Zhao, F. J. Kirk, G. J. D. Coles, B. J. Horstwood, M. S. A. |
| description | • The extent of isotopic discrimination of transition metals in biological processes is poorly understood but potentially has important applications in plant and biogeochemical studies. • Using multicollector inductively coupled plasma (ICP) mass spectrometry, we measured isotopic fractionation of zinc (Zn) during uptake from nutrient solutions by rice (Oryza sativa), lettuce (Lactuca sativa) and tomato (Lycopersicon esculentum) plants. • For all three species, the roots showed a similar extent of heavy Zn enrichment relative to the nutrient solution, probably reflecting preferential adsorption on external root surfaces. By contrast, a plant-species specific enrichment of the light Zn isotope occurred in the shoots, indicative of a biological, membrane-transport controlled uptake into plant cells. The extent of the fractionation in the shoots further depended on the Zn speciation in the nutrient solution. • The observed isotopic depletion in heavy Zn from root to shoot (-0.13 to -0.26‰ per atomic mass unit) is equivalent to roughly a quarter of the total reported terrestrial variability of Zn isotopic compositions (c. 0.84‰ per atomic mass unit). Plant uptake therefore represents an important source of isotopic variation in biogeochemical cycling of Zn. |
| doi_str_mv | 10.1111/j.1469-8137.2004.01307.x |
| format | Article |
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J. ; Mason, T. F. D. ; Zhao, F. J. ; Kirk, G. J. D. ; Coles, B. J. ; Horstwood, M. S. A.</creator><creatorcontrib>Weiss, D. J. ; Mason, T. F. D. ; Zhao, F. J. ; Kirk, G. J. D. ; Coles, B. J. ; Horstwood, M. S. A.</creatorcontrib><description>• The extent of isotopic discrimination of transition metals in biological processes is poorly understood but potentially has important applications in plant and biogeochemical studies. • Using multicollector inductively coupled plasma (ICP) mass spectrometry, we measured isotopic fractionation of zinc (Zn) during uptake from nutrient solutions by rice (Oryza sativa), lettuce (Lactuca sativa) and tomato (Lycopersicon esculentum) plants. • For all three species, the roots showed a similar extent of heavy Zn enrichment relative to the nutrient solution, probably reflecting preferential adsorption on external root surfaces. By contrast, a plant-species specific enrichment of the light Zn isotope occurred in the shoots, indicative of a biological, membrane-transport controlled uptake into plant cells. The extent of the fractionation in the shoots further depended on the Zn speciation in the nutrient solution. • The observed isotopic depletion in heavy Zn from root to shoot (-0.13 to -0.26‰ per atomic mass unit) is equivalent to roughly a quarter of the total reported terrestrial variability of Zn isotopic compositions (c. 0.84‰ per atomic mass unit). Plant uptake therefore represents an important source of isotopic variation in biogeochemical cycling of Zn.</description><identifier>ISSN: 0028-646X</identifier><identifier>EISSN: 1469-8137</identifier><identifier>DOI: 10.1111/j.1469-8137.2004.01307.x</identifier><identifier>PMID: 15720681</identifier><identifier>CODEN: NEPHAV</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science</publisher><subject>Biological and medical sciences ; Biological Transport ; Cell walls ; Chelating Agents - pharmacology ; field crops ; Fractionation ; Fundamental and applied biological sciences. Psychology ; heavy metals ; Isotopes ; isotopic discrimination ; Lactuca - drug effects ; Lactuca - metabolism ; Lactuca sativa ; Lettuce ; Nutrient solutions ; nutrient transport ; nutrient uptake ; Oryza - drug effects ; Oryza - metabolism ; Oryza sativa ; Plant physiology and development ; Plant roots ; Plant Roots - metabolism ; Plant Shoots - metabolism ; plant uptake ; Plants ; Rapid Report ; Rice ; Solanum lycopersicum - drug effects ; Solanum lycopersicum - metabolism ; Solanum lycopersicum var. lycopersicum ; Speciation ; stable isotopes ; tomatoes ; Water and solutes. 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A.</creatorcontrib><title>Isotopic discrimination of zinc in higher plants</title><title>The New phytologist</title><addtitle>New Phytol</addtitle><description>• The extent of isotopic discrimination of transition metals in biological processes is poorly understood but potentially has important applications in plant and biogeochemical studies. • Using multicollector inductively coupled plasma (ICP) mass spectrometry, we measured isotopic fractionation of zinc (Zn) during uptake from nutrient solutions by rice (Oryza sativa), lettuce (Lactuca sativa) and tomato (Lycopersicon esculentum) plants. • For all three species, the roots showed a similar extent of heavy Zn enrichment relative to the nutrient solution, probably reflecting preferential adsorption on external root surfaces. By contrast, a plant-species specific enrichment of the light Zn isotope occurred in the shoots, indicative of a biological, membrane-transport controlled uptake into plant cells. The extent of the fractionation in the shoots further depended on the Zn speciation in the nutrient solution. • The observed isotopic depletion in heavy Zn from root to shoot (-0.13 to -0.26‰ per atomic mass unit) is equivalent to roughly a quarter of the total reported terrestrial variability of Zn isotopic compositions (c. 0.84‰ per atomic mass unit). Plant uptake therefore represents an important source of isotopic variation in biogeochemical cycling of Zn.</description><subject>Biological and medical sciences</subject><subject>Biological Transport</subject><subject>Cell walls</subject><subject>Chelating Agents - pharmacology</subject><subject>field crops</subject><subject>Fractionation</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>heavy metals</subject><subject>Isotopes</subject><subject>isotopic discrimination</subject><subject>Lactuca - drug effects</subject><subject>Lactuca - metabolism</subject><subject>Lactuca sativa</subject><subject>Lettuce</subject><subject>Nutrient solutions</subject><subject>nutrient transport</subject><subject>nutrient uptake</subject><subject>Oryza - drug effects</subject><subject>Oryza - metabolism</subject><subject>Oryza sativa</subject><subject>Plant physiology and development</subject><subject>Plant roots</subject><subject>Plant Roots - metabolism</subject><subject>Plant Shoots - metabolism</subject><subject>plant uptake</subject><subject>Plants</subject><subject>Rapid Report</subject><subject>Rice</subject><subject>Solanum lycopersicum - drug effects</subject><subject>Solanum lycopersicum - metabolism</subject><subject>Solanum lycopersicum var. lycopersicum</subject><subject>Speciation</subject><subject>stable isotopes</subject><subject>tomatoes</subject><subject>Water and solutes. Absorption, translocation and permeability</subject><subject>Zinc</subject><subject>zinc (Zn)</subject><subject>Zinc Isotopes - metabolism</subject><issn>0028-646X</issn><issn>1469-8137</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkEtLxDAUhYMoOj7-gWg3umu9aZvXwoWILxAVVHAX0jTVDJ1mTDr4-PWmdlCXZpPAOefeLwehBEOG4zmaZrikIuW4YFkOUGaAC2DZ-wqa_AiraAKQ85SW9GkDbYYwBQBBaL6ONjBhOVCOJwiuguvd3OqktkF7O7Od6q3rEtckn7bTie2SF_v8Ynwyb1XXh2201qg2mJ3lvYUez88eTi_T69uLq9OT61QTwlla8RpjJZgRnNdMQcOKusZGUNoIoSuleJ6zmkTAijdQCiW00ZRWKq-0MUIVW-hwnDv37nVhQi9nEdC0EcK4RZCUlSUpgEQjH43auxC8aeQ8fkP5D4lBDm3JqRxKkUMpcmhLfrcl32N0b7ljUc1M_Rtc1hMNB0uDClq1jVedtuHXR0tGMRkYjkffm23Nx78B5M3d5fCK-d0xPw298384Yg7zKO-PcqOcVM8-Ijze58MQEIwQwYsvSYCXww</recordid><startdate>200503</startdate><enddate>200503</enddate><creator>Weiss, D. J.</creator><creator>Mason, T. F. D.</creator><creator>Zhao, F. J.</creator><creator>Kirk, G. 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Psychology</topic><topic>heavy metals</topic><topic>Isotopes</topic><topic>isotopic discrimination</topic><topic>Lactuca - drug effects</topic><topic>Lactuca - metabolism</topic><topic>Lactuca sativa</topic><topic>Lettuce</topic><topic>Nutrient solutions</topic><topic>nutrient transport</topic><topic>nutrient uptake</topic><topic>Oryza - drug effects</topic><topic>Oryza - metabolism</topic><topic>Oryza sativa</topic><topic>Plant physiology and development</topic><topic>Plant roots</topic><topic>Plant Roots - metabolism</topic><topic>Plant Shoots - metabolism</topic><topic>plant uptake</topic><topic>Plants</topic><topic>Rapid Report</topic><topic>Rice</topic><topic>Solanum lycopersicum - drug effects</topic><topic>Solanum lycopersicum - metabolism</topic><topic>Solanum lycopersicum var. lycopersicum</topic><topic>Speciation</topic><topic>stable isotopes</topic><topic>tomatoes</topic><topic>Water and solutes. 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A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Isotopic discrimination of zinc in higher plants</atitle><jtitle>The New phytologist</jtitle><addtitle>New Phytol</addtitle><date>2005-03</date><risdate>2005</risdate><volume>165</volume><issue>3</issue><spage>703</spage><epage>710</epage><pages>703-710</pages><issn>0028-646X</issn><eissn>1469-8137</eissn><coden>NEPHAV</coden><abstract>• The extent of isotopic discrimination of transition metals in biological processes is poorly understood but potentially has important applications in plant and biogeochemical studies. • Using multicollector inductively coupled plasma (ICP) mass spectrometry, we measured isotopic fractionation of zinc (Zn) during uptake from nutrient solutions by rice (Oryza sativa), lettuce (Lactuca sativa) and tomato (Lycopersicon esculentum) plants. • For all three species, the roots showed a similar extent of heavy Zn enrichment relative to the nutrient solution, probably reflecting preferential adsorption on external root surfaces. By contrast, a plant-species specific enrichment of the light Zn isotope occurred in the shoots, indicative of a biological, membrane-transport controlled uptake into plant cells. The extent of the fractionation in the shoots further depended on the Zn speciation in the nutrient solution. • The observed isotopic depletion in heavy Zn from root to shoot (-0.13 to -0.26‰ per atomic mass unit) is equivalent to roughly a quarter of the total reported terrestrial variability of Zn isotopic compositions (c. 0.84‰ per atomic mass unit). Plant uptake therefore represents an important source of isotopic variation in biogeochemical cycling of Zn.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science</pub><pmid>15720681</pmid><doi>10.1111/j.1469-8137.2004.01307.x</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | The New phytologist, 2005-03, Vol.165 (3), p.703-710 |
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| source | Jstor Complete Legacy; Wiley Free Content; MEDLINE; IngentaConnect Free/Open Access Journals; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Biological and medical sciences Biological Transport Cell walls Chelating Agents - pharmacology field crops Fractionation Fundamental and applied biological sciences. Psychology heavy metals Isotopes isotopic discrimination Lactuca - drug effects Lactuca - metabolism Lactuca sativa Lettuce Nutrient solutions nutrient transport nutrient uptake Oryza - drug effects Oryza - metabolism Oryza sativa Plant physiology and development Plant roots Plant Roots - metabolism Plant Shoots - metabolism plant uptake Plants Rapid Report Rice Solanum lycopersicum - drug effects Solanum lycopersicum - metabolism Solanum lycopersicum var. lycopersicum Speciation stable isotopes tomatoes Water and solutes. Absorption, translocation and permeability Zinc zinc (Zn) Zinc Isotopes - metabolism |
| title | Isotopic discrimination of zinc in higher plants |
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