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MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America
BACKGROUND: The sugarcane borer (SCB), Diatraea saccharalis (Lepidoptera: Crambidae), is a key pest of maize in Argentina, and genetically modified maize, producing Bacillus thuringiensis (Bt) proteins, has revolutionized the management of this insect in South America. However, field‐evolved resista...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley & Sons, Ltd.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9545257/ https://www.ncbi.nlm.nih.gov/pubmed/35567382 http://dx.doi.org/10.1002/ps.6986 |
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author | Horikoshi, Renato J. Ferrari, German Dourado, Patrick M. Climaco, Juan I. Vertuan, Hallison V. Evans, Adam Pleau, Michael Morrell, Kimberly José, Marcia O. M. A. Anderson, Heather Martinelli, Samuel Ovejero, Ramiro F. L. Berger, Geraldo U. Head, Graham |
author_facet | Horikoshi, Renato J. Ferrari, German Dourado, Patrick M. Climaco, Juan I. Vertuan, Hallison V. Evans, Adam Pleau, Michael Morrell, Kimberly José, Marcia O. M. A. Anderson, Heather Martinelli, Samuel Ovejero, Ramiro F. L. Berger, Geraldo U. Head, Graham |
author_sort | Horikoshi, Renato J. |
collection | PubMed |
description | BACKGROUND: The sugarcane borer (SCB), Diatraea saccharalis (Lepidoptera: Crambidae), is a key pest of maize in Argentina, and genetically modified maize, producing Bacillus thuringiensis (Bt) proteins, has revolutionized the management of this insect in South America. However, field‐evolved resistance to some Bt technologies has been observed in SCB in Argentina. Here we assessed a new Bt technology, MON 95379, in the laboratory, greenhouse and field for efficacy against SCB. RESULTS: In a laboratory leaf disc bioassay, both MON 95379 (producing Cry1B.868 and Cry1Da_7) and Cry1B.868_single maize (producing only Cry1B.868) resulted in 100% mortality of SCB. The level of Cry1B.868 in the Cry1B.868_single maize is comparable to that in MON 95379 maize. However, the Cry1Da_7 protein does not have high efficacy against SCB, as evidenced by < 20% mortality on Cry1Da_7_single leaf tissue. Total (100%) mortality of SCB in a Cry1B.868_single tissue dilution bioassay indicated that Cry1B.868_single maize meets the criteria to be classified as a high dose. Similar median lethal concentration (LC(50)) values were observed for MON 89034‐R and susceptible SCB strains exposed to Cry1B.868 protein. MON 95379 also controlled SCB strains resistant to MON 89034 (Cry1A.105/Cry2Ab2) and Cry1Ab. Under field conditions in Brazil and Argentina, MON 95379 maize plants were consistently protected from SCB damage. CONCLUSION: MON 95379 maize will bring value to maize growers in South America by effectively managing SCB even in locations where resistance to other Bt‐containing maize technologies has been reported. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. |
format | Online Article Text |
id | pubmed-9545257 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley & Sons, Ltd. |
record_format | MEDLINE/PubMed |
spelling | pubmed-95452572022-10-14 MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America Horikoshi, Renato J. Ferrari, German Dourado, Patrick M. Climaco, Juan I. Vertuan, Hallison V. Evans, Adam Pleau, Michael Morrell, Kimberly José, Marcia O. M. A. Anderson, Heather Martinelli, Samuel Ovejero, Ramiro F. L. Berger, Geraldo U. Head, Graham Pest Manag Sci Research Articles BACKGROUND: The sugarcane borer (SCB), Diatraea saccharalis (Lepidoptera: Crambidae), is a key pest of maize in Argentina, and genetically modified maize, producing Bacillus thuringiensis (Bt) proteins, has revolutionized the management of this insect in South America. However, field‐evolved resistance to some Bt technologies has been observed in SCB in Argentina. Here we assessed a new Bt technology, MON 95379, in the laboratory, greenhouse and field for efficacy against SCB. RESULTS: In a laboratory leaf disc bioassay, both MON 95379 (producing Cry1B.868 and Cry1Da_7) and Cry1B.868_single maize (producing only Cry1B.868) resulted in 100% mortality of SCB. The level of Cry1B.868 in the Cry1B.868_single maize is comparable to that in MON 95379 maize. However, the Cry1Da_7 protein does not have high efficacy against SCB, as evidenced by < 20% mortality on Cry1Da_7_single leaf tissue. Total (100%) mortality of SCB in a Cry1B.868_single tissue dilution bioassay indicated that Cry1B.868_single maize meets the criteria to be classified as a high dose. Similar median lethal concentration (LC(50)) values were observed for MON 89034‐R and susceptible SCB strains exposed to Cry1B.868 protein. MON 95379 also controlled SCB strains resistant to MON 89034 (Cry1A.105/Cry2Ab2) and Cry1Ab. Under field conditions in Brazil and Argentina, MON 95379 maize plants were consistently protected from SCB damage. CONCLUSION: MON 95379 maize will bring value to maize growers in South America by effectively managing SCB even in locations where resistance to other Bt‐containing maize technologies has been reported. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. John Wiley & Sons, Ltd. 2022-06-03 2022-08 /pmc/articles/PMC9545257/ /pubmed/35567382 http://dx.doi.org/10.1002/ps.6986 Text en © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Research Articles Horikoshi, Renato J. Ferrari, German Dourado, Patrick M. Climaco, Juan I. Vertuan, Hallison V. Evans, Adam Pleau, Michael Morrell, Kimberly José, Marcia O. M. A. Anderson, Heather Martinelli, Samuel Ovejero, Ramiro F. L. Berger, Geraldo U. Head, Graham MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America |
title |
MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America |
title_full |
MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America |
title_fullStr |
MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America |
title_full_unstemmed |
MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America |
title_short |
MON 95379 Bt maize as a new tool to manage sugarcane borer (Diatraea saccharalis) in South America |
title_sort | mon 95379 bt maize as a new tool to manage sugarcane borer (diatraea saccharalis) in south america |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9545257/ https://www.ncbi.nlm.nih.gov/pubmed/35567382 http://dx.doi.org/10.1002/ps.6986 |
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