Uptake, Translocation, and Metabolism in Alfalfa (Medicago sativa) Selected for Enhanced Tolerance to Terbacil
Terbacil tolerance was investigated in field-selected alfalfa strain ‘OK 182.’ Growth response studies indicated a 78% increase in tolerance over the unselected parental cultivar ‘Cimarron.’ Photosynthetic electron transport was inhibited similarly in both cultivars when isolated thylakoids were exp...
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| Veröffentlicht in: | Weed science 1995-07, Vol.43 (3), p.365-369 |
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| creator | Anderson, Michael. P Bensch, Curtis Stritzke, Jimmy F. Caddel, John L. |
| description | Terbacil tolerance was investigated in field-selected alfalfa strain ‘OK 182.’ Growth response studies indicated a 78% increase in tolerance over the unselected parental cultivar ‘Cimarron.’ Photosynthetic electron transport was inhibited similarly in both cultivars when isolated thylakoids were exposed to a wide range of terbacil concentration indicating that tolerance was not due to reduced sensitivity at the site-of-action. ‘OK 182’ took up an average of 22% less 14C-terbacil over the 6-d labeling period. A similar proportion of total radiolabel was translocated in both strains indicating that differential translocation was not a factor in the tolerance mechanism. Once in the leaves, terbacil was rapidly metabolized to a glucosidic conjugate by both strains. Terbacil and total concentration of metabolites in leaf tissues were 17% and 33% lower in ‘OK 182’ than in ‘Cimarron,’ respectively. Enhanced tolerance to terbacil in ‘OK 182’ was attributed to decreased terbacil uptake. |
| doi_str_mv | 10.1017/S0043174500081339 |
| format | Article |
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P ; Bensch, Curtis ; Stritzke, Jimmy F. ; Caddel, John L.</creator><creatorcontrib>Anderson, Michael. P ; Bensch, Curtis ; Stritzke, Jimmy F. ; Caddel, John L.</creatorcontrib><description>Terbacil tolerance was investigated in field-selected alfalfa strain ‘OK 182.’ Growth response studies indicated a 78% increase in tolerance over the unselected parental cultivar ‘Cimarron.’ Photosynthetic electron transport was inhibited similarly in both cultivars when isolated thylakoids were exposed to a wide range of terbacil concentration indicating that tolerance was not due to reduced sensitivity at the site-of-action. ‘OK 182’ took up an average of 22% less 14C-terbacil over the 6-d labeling period. A similar proportion of total radiolabel was translocated in both strains indicating that differential translocation was not a factor in the tolerance mechanism. Once in the leaves, terbacil was rapidly metabolized to a glucosidic conjugate by both strains. Terbacil and total concentration of metabolites in leaf tissues were 17% and 33% lower in ‘OK 182’ than in ‘Cimarron,’ respectively. Enhanced tolerance to terbacil in ‘OK 182’ was attributed to decreased terbacil uptake.</description><identifier>ISSN: 0043-1745</identifier><identifier>EISSN: 1550-2759</identifier><identifier>DOI: 10.1017/S0043174500081339</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Alfalfa ; Crops ; FISIOLOGIA VEGETAL ; FOTOSINTESIS ; HERBICIDAS ; HERBICIDE ; Herbicides ; INHIBICION ; INHIBITION ; ISOTOPE RADIOACTIF ; Leaves ; MEDICAGO SATIVA ; Metabolism ; METABOLISME ; METABOLISMO ; METABOLITE ; METABOLITOS ; OXIRREDUCION ; OXYDOREDUCTION ; PHOTOSYNTHESE ; PHYSIOLOGIE VEGETALE ; Physiology, Chemistry and Biochemistry ; Plant roots ; Plants ; Radioactive decay ; RADIOISOTOPOS ; RESISTANCE AUX PRODUITS CHIMIQUES ; RESISTENCIA A PRODUCTOS QUIMICOS ; Stems ; TERBACIL ; TERBACILO ; Thylakoids ; VARIEDADES ; VARIETE</subject><ispartof>Weed science, 1995-07, Vol.43 (3), p.365-369</ispartof><rights>Copyright © 1995 by the Weed Science Society of America</rights><rights>Copyright 1995 The Weed Science Society of America</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c279t-c036cb2e3d009e67728b24212e3044e5342ae5a4440790c67544b6346e9f29e13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/4045566$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/4045566$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,58017,58250</link.rule.ids></links><search><creatorcontrib>Anderson, Michael. P</creatorcontrib><creatorcontrib>Bensch, Curtis</creatorcontrib><creatorcontrib>Stritzke, Jimmy F.</creatorcontrib><creatorcontrib>Caddel, John L.</creatorcontrib><title>Uptake, Translocation, and Metabolism in Alfalfa (Medicago sativa) Selected for Enhanced Tolerance to Terbacil</title><title>Weed science</title><addtitle>Weed sci</addtitle><description>Terbacil tolerance was investigated in field-selected alfalfa strain ‘OK 182.’ Growth response studies indicated a 78% increase in tolerance over the unselected parental cultivar ‘Cimarron.’ Photosynthetic electron transport was inhibited similarly in both cultivars when isolated thylakoids were exposed to a wide range of terbacil concentration indicating that tolerance was not due to reduced sensitivity at the site-of-action. ‘OK 182’ took up an average of 22% less 14C-terbacil over the 6-d labeling period. A similar proportion of total radiolabel was translocated in both strains indicating that differential translocation was not a factor in the tolerance mechanism. Once in the leaves, terbacil was rapidly metabolized to a glucosidic conjugate by both strains. Terbacil and total concentration of metabolites in leaf tissues were 17% and 33% lower in ‘OK 182’ than in ‘Cimarron,’ respectively. Enhanced tolerance to terbacil in ‘OK 182’ was attributed to decreased terbacil uptake.</description><subject>Alfalfa</subject><subject>Crops</subject><subject>FISIOLOGIA VEGETAL</subject><subject>FOTOSINTESIS</subject><subject>HERBICIDAS</subject><subject>HERBICIDE</subject><subject>Herbicides</subject><subject>INHIBICION</subject><subject>INHIBITION</subject><subject>ISOTOPE RADIOACTIF</subject><subject>Leaves</subject><subject>MEDICAGO SATIVA</subject><subject>Metabolism</subject><subject>METABOLISME</subject><subject>METABOLISMO</subject><subject>METABOLITE</subject><subject>METABOLITOS</subject><subject>OXIRREDUCION</subject><subject>OXYDOREDUCTION</subject><subject>PHOTOSYNTHESE</subject><subject>PHYSIOLOGIE VEGETALE</subject><subject>Physiology, Chemistry and Biochemistry</subject><subject>Plant roots</subject><subject>Plants</subject><subject>Radioactive decay</subject><subject>RADIOISOTOPOS</subject><subject>RESISTANCE AUX PRODUITS CHIMIQUES</subject><subject>RESISTENCIA A PRODUCTOS QUIMICOS</subject><subject>Stems</subject><subject>TERBACIL</subject><subject>TERBACILO</subject><subject>Thylakoids</subject><subject>VARIEDADES</subject><subject>VARIETE</subject><issn>0043-1745</issn><issn>1550-2759</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEQx4MoWB8fQPGQo4Krk7c5FqkPqHhoe16y2dm6dbspySr47U2peBGEgXn85j_DDCFnDG4YMHM7A5CCGakA4I4JYffIiCkFBTfK7pPRFhdbfkiOUloBMM2ZHZF-sRncO17TeXR96oJ3Qxv6a-r6mr7g4KrQtWlN256Ou8Zlo5cvWLfeLQNNuffTXdEZdugHrGkTIp30b673OZmHDuM2pEOgc4yV8213Qg7ylISnP_6YLB4m8_unYvr6-Hw_nhaeGzsUHoT2FUdRA1jUxvC7ikvOcgWkRCUkd6iclBKMBa-NkrLSQmq0DbfIxDFhu7k-hpQiNuUmtmsXv0oG5fZh5Z-HZc3FTrNKQ4i_AglSKa0zPt_hxoXSLWObysXMGqEBTIbiZ59bV7Gtl1iuwkfs843_bPwG-YJ9QQ</recordid><startdate>19950701</startdate><enddate>19950701</enddate><creator>Anderson, Michael. P</creator><creator>Bensch, Curtis</creator><creator>Stritzke, Jimmy F.</creator><creator>Caddel, John L.</creator><general>Cambridge University Press</general><general>Weed Science Society of America</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19950701</creationdate><title>Uptake, Translocation, and Metabolism in Alfalfa (Medicago sativa) Selected for Enhanced Tolerance to Terbacil</title><author>Anderson, Michael. P ; Bensch, Curtis ; Stritzke, Jimmy F. ; Caddel, John L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c279t-c036cb2e3d009e67728b24212e3044e5342ae5a4440790c67544b6346e9f29e13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1995</creationdate><topic>Alfalfa</topic><topic>Crops</topic><topic>FISIOLOGIA VEGETAL</topic><topic>FOTOSINTESIS</topic><topic>HERBICIDAS</topic><topic>HERBICIDE</topic><topic>Herbicides</topic><topic>INHIBICION</topic><topic>INHIBITION</topic><topic>ISOTOPE RADIOACTIF</topic><topic>Leaves</topic><topic>MEDICAGO SATIVA</topic><topic>Metabolism</topic><topic>METABOLISME</topic><topic>METABOLISMO</topic><topic>METABOLITE</topic><topic>METABOLITOS</topic><topic>OXIRREDUCION</topic><topic>OXYDOREDUCTION</topic><topic>PHOTOSYNTHESE</topic><topic>PHYSIOLOGIE VEGETALE</topic><topic>Physiology, Chemistry and Biochemistry</topic><topic>Plant roots</topic><topic>Plants</topic><topic>Radioactive decay</topic><topic>RADIOISOTOPOS</topic><topic>RESISTANCE AUX PRODUITS CHIMIQUES</topic><topic>RESISTENCIA A PRODUCTOS QUIMICOS</topic><topic>Stems</topic><topic>TERBACIL</topic><topic>TERBACILO</topic><topic>Thylakoids</topic><topic>VARIEDADES</topic><topic>VARIETE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Anderson, Michael. P</creatorcontrib><creatorcontrib>Bensch, Curtis</creatorcontrib><creatorcontrib>Stritzke, Jimmy F.</creatorcontrib><creatorcontrib>Caddel, John L.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><jtitle>Weed science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Anderson, Michael. P</au><au>Bensch, Curtis</au><au>Stritzke, Jimmy F.</au><au>Caddel, John L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Uptake, Translocation, and Metabolism in Alfalfa (Medicago sativa) Selected for Enhanced Tolerance to Terbacil</atitle><jtitle>Weed science</jtitle><addtitle>Weed sci</addtitle><date>1995-07-01</date><risdate>1995</risdate><volume>43</volume><issue>3</issue><spage>365</spage><epage>369</epage><pages>365-369</pages><issn>0043-1745</issn><eissn>1550-2759</eissn><abstract>Terbacil tolerance was investigated in field-selected alfalfa strain ‘OK 182.’ Growth response studies indicated a 78% increase in tolerance over the unselected parental cultivar ‘Cimarron.’ Photosynthetic electron transport was inhibited similarly in both cultivars when isolated thylakoids were exposed to a wide range of terbacil concentration indicating that tolerance was not due to reduced sensitivity at the site-of-action. ‘OK 182’ took up an average of 22% less 14C-terbacil over the 6-d labeling period. A similar proportion of total radiolabel was translocated in both strains indicating that differential translocation was not a factor in the tolerance mechanism. Once in the leaves, terbacil was rapidly metabolized to a glucosidic conjugate by both strains. Terbacil and total concentration of metabolites in leaf tissues were 17% and 33% lower in ‘OK 182’ than in ‘Cimarron,’ respectively. Enhanced tolerance to terbacil in ‘OK 182’ was attributed to decreased terbacil uptake.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S0043174500081339</doi><tpages>5</tpages></addata></record> |
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| ispartof | Weed science, 1995-07, Vol.43 (3), p.365-369 |
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| language | eng |
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| source | JSTOR Archive Collection A-Z Listing |
| subjects | Alfalfa Crops FISIOLOGIA VEGETAL FOTOSINTESIS HERBICIDAS HERBICIDE Herbicides INHIBICION INHIBITION ISOTOPE RADIOACTIF Leaves MEDICAGO SATIVA Metabolism METABOLISME METABOLISMO METABOLITE METABOLITOS OXIRREDUCION OXYDOREDUCTION PHOTOSYNTHESE PHYSIOLOGIE VEGETALE Physiology, Chemistry and Biochemistry Plant roots Plants Radioactive decay RADIOISOTOPOS RESISTANCE AUX PRODUITS CHIMIQUES RESISTENCIA A PRODUCTOS QUIMICOS Stems TERBACIL TERBACILO Thylakoids VARIEDADES VARIETE |
| title | Uptake, Translocation, and Metabolism in Alfalfa (Medicago sativa) Selected for Enhanced Tolerance to Terbacil |
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