Methods of Assessing Bermudagrass [Cynodon dactylon] Responses to HPPD‐Inhibiting Herbicides
ABSTRACT Mesotrione, topramezone, and tembotrione inhibit 4‐hydroxyphenylpyruvate dioxygenase (HPPD), an enzyme integral to carotenoid biosynthesis. Research was conducted to evaluate the efficacy of visual bleaching and chlorophyll fluorescence yield (Fv/Fm) measurements for estimating common bermu...
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| creator | Elmore, M. T. Brosnan, J. T. Kopsell, D. A. Breeden, G. K. |
| description | ABSTRACT
Mesotrione, topramezone, and tembotrione inhibit 4‐hydroxyphenylpyruvate dioxygenase (HPPD), an enzyme integral to carotenoid biosynthesis. Research was conducted to evaluate the efficacy of visual bleaching and chlorophyll fluorescence yield (Fv/Fm) measurements for estimating common bermudagrass [Cynodon dactylon (L.) Pers.] carotenoid and chlorophyll concentrations following mesotrione (0.28, 0.35, and 0.42 kg ha−1), topramezone (0.018, 0.025, and 0.038 kg ha−1), and tembotrione (0.092, 0.184, and 0.276 kg ha−1) applications. Measurements of VB and Fv/Fm were evaluated 3, 7, 14, 21, 28, and 35 d after application. Leaf tissues were sampled on the same dates and assayed for chlorophyll and carotenoid compounds by using high‐pressure liquid chromatography methodology. Carotenoid and total chlorophyll concentrations were regressed upon VB and Fv/Fm on each evaluation date. While significant (P < 0.05) relationships were detected on each date, variation explained by linear regression was modest (R2 < 0.65); thus, neither VB nor Fv/Fm assessments are good predictors of carotenoid and chlorophyll concentrations after HPPD‐inhibiting herbicide treatment. Comparisons of R2 values for VB and Fv/Fm data suggest no advantage in using Fv/Fm in place of VB measurements when evaluating HPPD‐inhibiting herbicide activity. |
| doi_str_mv | 10.2135/cropsci2010.11.0656 |
| format | Article |
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Mesotrione, topramezone, and tembotrione inhibit 4‐hydroxyphenylpyruvate dioxygenase (HPPD), an enzyme integral to carotenoid biosynthesis. Research was conducted to evaluate the efficacy of visual bleaching and chlorophyll fluorescence yield (Fv/Fm) measurements for estimating common bermudagrass [Cynodon dactylon (L.) Pers.] carotenoid and chlorophyll concentrations following mesotrione (0.28, 0.35, and 0.42 kg ha−1), topramezone (0.018, 0.025, and 0.038 kg ha−1), and tembotrione (0.092, 0.184, and 0.276 kg ha−1) applications. Measurements of VB and Fv/Fm were evaluated 3, 7, 14, 21, 28, and 35 d after application. Leaf tissues were sampled on the same dates and assayed for chlorophyll and carotenoid compounds by using high‐pressure liquid chromatography methodology. Carotenoid and total chlorophyll concentrations were regressed upon VB and Fv/Fm on each evaluation date. While significant (P < 0.05) relationships were detected on each date, variation explained by linear regression was modest (R2 < 0.65); thus, neither VB nor Fv/Fm assessments are good predictors of carotenoid and chlorophyll concentrations after HPPD‐inhibiting herbicide treatment. Comparisons of R2 values for VB and Fv/Fm data suggest no advantage in using Fv/Fm in place of VB measurements when evaluating HPPD‐inhibiting herbicide activity.</description><identifier>ISSN: 0011-183X</identifier><identifier>EISSN: 1435-0653</identifier><identifier>DOI: 10.2135/cropsci2010.11.0656</identifier><identifier>CODEN: CRPSAY</identifier><language>eng</language><publisher>Madison, WI: The Crop Science Society of America, Inc</publisher><subject>Agronomy. Soil science and plant productions ; Biological and medical sciences ; Biosynthesis ; Bleaching ; Chlorophyll ; Experiments ; Free radicals ; Fundamental and applied biological sciences. Psychology ; Grasses ; Herbicides ; Liquid chromatography ; Methods ; Pigments ; Plant tissues ; R&D ; Research & development ; Turfgrasses</subject><ispartof>Crop science, 2011-11, Vol.51 (6), p.2840-2845</ispartof><rights>Copyright © by the Crop Science Society of America, Inc.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright American Society of Agronomy Nov/Dec 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3696-28adccf01dae53cbc026d102c0170ab6ea6f64605a2da1ecf9d7e2d26ffb8fa03</citedby><cites>FETCH-LOGICAL-c3696-28adccf01dae53cbc026d102c0170ab6ea6f64605a2da1ecf9d7e2d26ffb8fa03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.2135%2Fcropsci2010.11.0656$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.2135%2Fcropsci2010.11.0656$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24637722$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Elmore, M. T.</creatorcontrib><creatorcontrib>Brosnan, J. T.</creatorcontrib><creatorcontrib>Kopsell, D. A.</creatorcontrib><creatorcontrib>Breeden, G. K.</creatorcontrib><title>Methods of Assessing Bermudagrass [Cynodon dactylon] Responses to HPPD‐Inhibiting Herbicides</title><title>Crop science</title><description>ABSTRACT
Mesotrione, topramezone, and tembotrione inhibit 4‐hydroxyphenylpyruvate dioxygenase (HPPD), an enzyme integral to carotenoid biosynthesis. Research was conducted to evaluate the efficacy of visual bleaching and chlorophyll fluorescence yield (Fv/Fm) measurements for estimating common bermudagrass [Cynodon dactylon (L.) Pers.] carotenoid and chlorophyll concentrations following mesotrione (0.28, 0.35, and 0.42 kg ha−1), topramezone (0.018, 0.025, and 0.038 kg ha−1), and tembotrione (0.092, 0.184, and 0.276 kg ha−1) applications. Measurements of VB and Fv/Fm were evaluated 3, 7, 14, 21, 28, and 35 d after application. Leaf tissues were sampled on the same dates and assayed for chlorophyll and carotenoid compounds by using high‐pressure liquid chromatography methodology. Carotenoid and total chlorophyll concentrations were regressed upon VB and Fv/Fm on each evaluation date. While significant (P < 0.05) relationships were detected on each date, variation explained by linear regression was modest (R2 < 0.65); thus, neither VB nor Fv/Fm assessments are good predictors of carotenoid and chlorophyll concentrations after HPPD‐inhibiting herbicide treatment. Comparisons of R2 values for VB and Fv/Fm data suggest no advantage in using Fv/Fm in place of VB measurements when evaluating HPPD‐inhibiting herbicide activity.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Biosynthesis</subject><subject>Bleaching</subject><subject>Chlorophyll</subject><subject>Experiments</subject><subject>Free radicals</subject><subject>Fundamental and applied biological sciences. 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T.</au><au>Brosnan, J. T.</au><au>Kopsell, D. A.</au><au>Breeden, G. K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Methods of Assessing Bermudagrass [Cynodon dactylon] Responses to HPPD‐Inhibiting Herbicides</atitle><jtitle>Crop science</jtitle><date>2011-11</date><risdate>2011</risdate><volume>51</volume><issue>6</issue><spage>2840</spage><epage>2845</epage><pages>2840-2845</pages><issn>0011-183X</issn><eissn>1435-0653</eissn><coden>CRPSAY</coden><abstract>ABSTRACT
Mesotrione, topramezone, and tembotrione inhibit 4‐hydroxyphenylpyruvate dioxygenase (HPPD), an enzyme integral to carotenoid biosynthesis. Research was conducted to evaluate the efficacy of visual bleaching and chlorophyll fluorescence yield (Fv/Fm) measurements for estimating common bermudagrass [Cynodon dactylon (L.) Pers.] carotenoid and chlorophyll concentrations following mesotrione (0.28, 0.35, and 0.42 kg ha−1), topramezone (0.018, 0.025, and 0.038 kg ha−1), and tembotrione (0.092, 0.184, and 0.276 kg ha−1) applications. Measurements of VB and Fv/Fm were evaluated 3, 7, 14, 21, 28, and 35 d after application. Leaf tissues were sampled on the same dates and assayed for chlorophyll and carotenoid compounds by using high‐pressure liquid chromatography methodology. Carotenoid and total chlorophyll concentrations were regressed upon VB and Fv/Fm on each evaluation date. While significant (P < 0.05) relationships were detected on each date, variation explained by linear regression was modest (R2 < 0.65); thus, neither VB nor Fv/Fm assessments are good predictors of carotenoid and chlorophyll concentrations after HPPD‐inhibiting herbicide treatment. Comparisons of R2 values for VB and Fv/Fm data suggest no advantage in using Fv/Fm in place of VB measurements when evaluating HPPD‐inhibiting herbicide activity.</abstract><cop>Madison, WI</cop><pub>The Crop Science Society of America, Inc</pub><doi>10.2135/cropsci2010.11.0656</doi><tpages>6</tpages></addata></record> |
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| subjects | Agronomy. Soil science and plant productions Biological and medical sciences Biosynthesis Bleaching Chlorophyll Experiments Free radicals Fundamental and applied biological sciences. Psychology Grasses Herbicides Liquid chromatography Methods Pigments Plant tissues R&D Research & development Turfgrasses |
| title | Methods of Assessing Bermudagrass [Cynodon dactylon] Responses to HPPD‐Inhibiting Herbicides |
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