Interactions of selenium hyperaccumulators and nonaccumulators during cocultivation on seleniferous or nonseleniferous soil – the importance of having good neighbors
• This study investigated how selenium (Se) affects relationships between Se hyperaccumulator and nonaccumulator species, particularly how plants influence their neighbors’ Se accumulation and growth. • Hyperaccumulators Astragalus bisulcatus and Stanleya pinnata and nonaccumulators Astragalus drumm...
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| Veröffentlicht in: | The New phytologist 2012-04, Vol.194 (1), p.264-277 |
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| creator | El Mehdawi, Ali F Cappa, Jennifer J Fakra, Sirine C Self, James Pilon‐Smits, Elizabeth A.H |
| description | • This study investigated how selenium (Se) affects relationships between Se hyperaccumulator and nonaccumulator species, particularly how plants influence their neighbors’ Se accumulation and growth. • Hyperaccumulators Astragalus bisulcatus and Stanleya pinnata and nonaccumulators Astragalus drummondii and Stanleya elata were cocultivated on seleniferous or nonseleniferous soil, or on gravel supplied with different selenate concentrations. The plants were analyzed for growth, Se accumulation and Se speciation. Also, root exudates were analyzed for Se concentration. • The hyperaccumulators showed 2.5‐fold better growth on seleniferous than on nonseleniferous soil, and up to fourfold better growth with increasing Se supply; the nonaccumulators showed the opposite results. Both hyperaccumulators and nonaccumulators could affect growth (up to threefold) and Se accumulation (up to sixfold) of neighboring plants. Nonaccumulators S. elata and A. drummondii accumulated predominantly (88–95%) organic C‐Se‐C; the remainder was selenate. S. elata accumulated relatively more C‐Se‐C and less selenate when growing adjacent to S. pinnata. Both hyperaccumulators released selenocompounds from their roots. A. bisulcatus exudate contained predominantly C‐Se‐C compounds; no speciation data could be obtained for S. pinnata. • Thus, plants can affect Se accumulation in neighbors, and soil Se affects competition and facilitation between plants. This helps to explain why hyperaccumulators are found predominantly on seleniferous soils. |
| doi_str_mv | 10.1111/j.1469-8137.2011.04043.x |
| format | Article |
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The plants were analyzed for growth, Se accumulation and Se speciation. Also, root exudates were analyzed for Se concentration. • The hyperaccumulators showed 2.5‐fold better growth on seleniferous than on nonseleniferous soil, and up to fourfold better growth with increasing Se supply; the nonaccumulators showed the opposite results. Both hyperaccumulators and nonaccumulators could affect growth (up to threefold) and Se accumulation (up to sixfold) of neighboring plants. Nonaccumulators S. elata and A. drummondii accumulated predominantly (88–95%) organic C‐Se‐C; the remainder was selenate. S. elata accumulated relatively more C‐Se‐C and less selenate when growing adjacent to S. pinnata. Both hyperaccumulators released selenocompounds from their roots. A. bisulcatus exudate contained predominantly C‐Se‐C compounds; no speciation data could be obtained for S. pinnata. • Thus, plants can affect Se accumulation in neighbors, and soil Se affects competition and facilitation between plants. This helps to explain why hyperaccumulators are found predominantly on seleniferous soils.</description><identifier>ISSN: 0028-646X</identifier><identifier>EISSN: 1469-8137</identifier><identifier>DOI: 10.1111/j.1469-8137.2011.04043.x</identifier><identifier>PMID: 22269105</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Accumulation ; Acid soils ; Agricultural soils ; Astragalus ; Astragalus bisulcatus ; Astragalus Plant - growth & development ; Astragalus Plant - metabolism ; Biomass ; Biomass production ; Brassicaceae - growth & development ; Brassicaceae - metabolism ; Colorado ; Exudates ; Exudation ; Gravel ; Growth ; hyperaccumulation ; Hyperaccumulators ; Least-Squares Analysis ; phytoenrichment ; Plant growth ; Plant Leaves - metabolism ; Plant roots ; Plant Roots - metabolism ; Plant Shoots - metabolism ; Plants ; plant–plant interactions ; root exudates ; Selenium ; Selenium - metabolism ; Soil ; Soil investigations ; Soil plant interactions ; Soils ; Speciation ; Stanleya ; X-Ray Absorption Spectroscopy</subject><ispartof>The New phytologist, 2012-04, Vol.194 (1), p.264-277</ispartof><rights>2012 New Phytologist Trust</rights><rights>2012 The Authors. New Phytologist © 2012 New Phytologist Trust</rights><rights>2012 The Authors. New Phytologist © 2012 New Phytologist Trust.</rights><rights>Copyright Wiley Subscription Services, Inc. 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The plants were analyzed for growth, Se accumulation and Se speciation. Also, root exudates were analyzed for Se concentration. • The hyperaccumulators showed 2.5‐fold better growth on seleniferous than on nonseleniferous soil, and up to fourfold better growth with increasing Se supply; the nonaccumulators showed the opposite results. Both hyperaccumulators and nonaccumulators could affect growth (up to threefold) and Se accumulation (up to sixfold) of neighboring plants. Nonaccumulators S. elata and A. drummondii accumulated predominantly (88–95%) organic C‐Se‐C; the remainder was selenate. S. elata accumulated relatively more C‐Se‐C and less selenate when growing adjacent to S. pinnata. Both hyperaccumulators released selenocompounds from their roots. A. bisulcatus exudate contained predominantly C‐Se‐C compounds; no speciation data could be obtained for S. pinnata. • Thus, plants can affect Se accumulation in neighbors, and soil Se affects competition and facilitation between plants. This helps to explain why hyperaccumulators are found predominantly on seleniferous soils.</description><subject>Accumulation</subject><subject>Acid soils</subject><subject>Agricultural soils</subject><subject>Astragalus</subject><subject>Astragalus bisulcatus</subject><subject>Astragalus Plant - growth & development</subject><subject>Astragalus Plant - metabolism</subject><subject>Biomass</subject><subject>Biomass production</subject><subject>Brassicaceae - growth & development</subject><subject>Brassicaceae - metabolism</subject><subject>Colorado</subject><subject>Exudates</subject><subject>Exudation</subject><subject>Gravel</subject><subject>Growth</subject><subject>hyperaccumulation</subject><subject>Hyperaccumulators</subject><subject>Least-Squares Analysis</subject><subject>phytoenrichment</subject><subject>Plant growth</subject><subject>Plant Leaves - metabolism</subject><subject>Plant roots</subject><subject>Plant Roots - metabolism</subject><subject>Plant Shoots - metabolism</subject><subject>Plants</subject><subject>plant–plant interactions</subject><subject>root exudates</subject><subject>Selenium</subject><subject>Selenium - metabolism</subject><subject>Soil</subject><subject>Soil investigations</subject><subject>Soil plant interactions</subject><subject>Soils</subject><subject>Speciation</subject><subject>Stanleya</subject><subject>X-Ray Absorption Spectroscopy</subject><issn>0028-646X</issn><issn>1469-8137</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNktFu1iAYhhujcf-mt6AkHnjUCpTScuCBWaZbsqiJLvGMUAotTQsV2m3_mfewi_C-vBKpnX8yj2xISuB53--DlyQBCGYofm_6DBHK0grlZYYhQhkkkOTZ7aNkd9h4nOwgxFVKCf12lByH0EMIWUHx0-QIY0wZgsUu-XlhZ-WFnI2zATgNghqUNcsIuv20bshlXAYxOx-AsA2wzj5YaxZvbAukk8swm2ux-oA4NhutvFuirV91D5aCMwP49eMOzJ0CZpycn4WVau2gE9erZetcLKdM29Wx0LPkiRZDUM_v_yfJ1fuzr6fn6eWnDxen7y5TWcAqTxkisqEClk1Nq0qTqlJMy0pqoiWBQqA6J5CWZVWosm4aXeBG01pDSRimDaP5SfJ68528-76oMPPRBKmGQVgV--YM56xA8Roj-eofsneLt7E5jguU45xijCJVbZT0LgSvNJ-8GYXfcwT5miXv-RoZXyPja5b8T5b8Nkpf3BdY6lE1B-Hf8CLwdgNuzKD2_23MP34-X2dRn276PsQsD3qrbqZuP7vBtSaeCjHCEceURP7lxmvhuGi9CfzqS3Qm8WEhiGie_wZxQc0z</recordid><startdate>201204</startdate><enddate>201204</enddate><creator>El Mehdawi, Ali F</creator><creator>Cappa, Jennifer J</creator><creator>Fakra, Sirine C</creator><creator>Self, James</creator><creator>Pilon‐Smits, Elizabeth A.H</creator><general>Blackwell Publishing Ltd</general><general>New Phytologist Trust</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>7X8</scope></search><sort><creationdate>201204</creationdate><title>Interactions of selenium hyperaccumulators and nonaccumulators during cocultivation on seleniferous or nonseleniferous soil – the importance of having good neighbors</title><author>El Mehdawi, Ali F ; Cappa, Jennifer J ; Fakra, Sirine C ; Self, James ; Pilon‐Smits, Elizabeth A.H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5083-914cd6a07db688f488e9fc8cf4fc40aa1b34067785e7bddf52df6bf0c4926d963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Accumulation</topic><topic>Acid soils</topic><topic>Agricultural soils</topic><topic>Astragalus</topic><topic>Astragalus bisulcatus</topic><topic>Astragalus Plant - growth & development</topic><topic>Astragalus Plant - metabolism</topic><topic>Biomass</topic><topic>Biomass production</topic><topic>Brassicaceae - growth & development</topic><topic>Brassicaceae - metabolism</topic><topic>Colorado</topic><topic>Exudates</topic><topic>Exudation</topic><topic>Gravel</topic><topic>Growth</topic><topic>hyperaccumulation</topic><topic>Hyperaccumulators</topic><topic>Least-Squares Analysis</topic><topic>phytoenrichment</topic><topic>Plant growth</topic><topic>Plant Leaves - metabolism</topic><topic>Plant roots</topic><topic>Plant Roots - metabolism</topic><topic>Plant Shoots - metabolism</topic><topic>Plants</topic><topic>plant–plant interactions</topic><topic>root exudates</topic><topic>Selenium</topic><topic>Selenium - metabolism</topic><topic>Soil</topic><topic>Soil investigations</topic><topic>Soil plant interactions</topic><topic>Soils</topic><topic>Speciation</topic><topic>Stanleya</topic><topic>X-Ray Absorption Spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>El Mehdawi, Ali F</creatorcontrib><creatorcontrib>Cappa, Jennifer J</creatorcontrib><creatorcontrib>Fakra, Sirine C</creatorcontrib><creatorcontrib>Self, James</creatorcontrib><creatorcontrib>Pilon‐Smits, Elizabeth A.H</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Ecology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>The New phytologist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>El Mehdawi, Ali F</au><au>Cappa, Jennifer J</au><au>Fakra, Sirine C</au><au>Self, James</au><au>Pilon‐Smits, Elizabeth A.H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interactions of selenium hyperaccumulators and nonaccumulators during cocultivation on seleniferous or nonseleniferous soil – the importance of having good neighbors</atitle><jtitle>The New phytologist</jtitle><addtitle>New Phytol</addtitle><date>2012-04</date><risdate>2012</risdate><volume>194</volume><issue>1</issue><spage>264</spage><epage>277</epage><pages>264-277</pages><issn>0028-646X</issn><eissn>1469-8137</eissn><abstract>• This study investigated how selenium (Se) affects relationships between Se hyperaccumulator and nonaccumulator species, particularly how plants influence their neighbors’ Se accumulation and growth. • Hyperaccumulators Astragalus bisulcatus and Stanleya pinnata and nonaccumulators Astragalus drummondii and Stanleya elata were cocultivated on seleniferous or nonseleniferous soil, or on gravel supplied with different selenate concentrations. The plants were analyzed for growth, Se accumulation and Se speciation. Also, root exudates were analyzed for Se concentration. • The hyperaccumulators showed 2.5‐fold better growth on seleniferous than on nonseleniferous soil, and up to fourfold better growth with increasing Se supply; the nonaccumulators showed the opposite results. Both hyperaccumulators and nonaccumulators could affect growth (up to threefold) and Se accumulation (up to sixfold) of neighboring plants. Nonaccumulators S. elata and A. drummondii accumulated predominantly (88–95%) organic C‐Se‐C; the remainder was selenate. S. elata accumulated relatively more C‐Se‐C and less selenate when growing adjacent to S. pinnata. Both hyperaccumulators released selenocompounds from their roots. A. bisulcatus exudate contained predominantly C‐Se‐C compounds; no speciation data could be obtained for S. pinnata. • Thus, plants can affect Se accumulation in neighbors, and soil Se affects competition and facilitation between plants. This helps to explain why hyperaccumulators are found predominantly on seleniferous soils.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>22269105</pmid><doi>10.1111/j.1469-8137.2011.04043.x</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Accumulation Acid soils Agricultural soils Astragalus Astragalus bisulcatus Astragalus Plant - growth & development Astragalus Plant - metabolism Biomass Biomass production Brassicaceae - growth & development Brassicaceae - metabolism Colorado Exudates Exudation Gravel Growth hyperaccumulation Hyperaccumulators Least-Squares Analysis phytoenrichment Plant growth Plant Leaves - metabolism Plant roots Plant Roots - metabolism Plant Shoots - metabolism Plants plant–plant interactions root exudates Selenium Selenium - metabolism Soil Soil investigations Soil plant interactions Soils Speciation Stanleya X-Ray Absorption Spectroscopy |
| title | Interactions of selenium hyperaccumulators and nonaccumulators during cocultivation on seleniferous or nonseleniferous soil – the importance of having good neighbors |
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