Biological activity of Bt proteins expressed in different structures of transgenic corn against Spodoptera frugiperda
| Autor: | Daniel Bernardi, Daniela M. Okuma, Eloisa Salmeron, Celso Omoto, Oderlei Bernardi, Renato J. Horikoshi |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Bacillus thuringiensis Spodoptera fall armyworm 01 natural sciences lagarta-do-cartucho lcsh:Agriculture 03 medical and health sciences milho Bt Botany lcsh:Agriculture (General) Larva Genetically modified maize General Veterinary biology manejo da resistência de insetos lcsh:S Biological activity biology.organism_classification lcsh:S1-972 insect resistance management 010602 entomology Horticulture 030104 developmental biology Animal Science and Zoology Plant Structures PEST analysis Bt corn Agronomy and Crop Science |
| Zdroj: | Ciência Rural, Vol 46, Iss 6, Pp 1019-1024 (2016) Ciência Rural v.46 n.6 2016 Ciência Rural Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
| ISSN: | 0103-8478 |
| Popis: | Spodoptera frugiperda (J. E. Smith) is the main target pest of Bt corn technologies, such as YieldGard VT PRO(tm) (Cry1A.105/Cry2Ab2) and PowerCore(tm) (Cry1A.105/Cry2Ab2/Cry1F). In this study, it was evaluated the biological activity of Bt proteins expressed in different plant structures of YieldGard VT PRO(tm) and PowerCore(tm) corn against S. frugiperda . Complete mortality of S. frugiperda neonates was observed on leaf-disc of both Bt corn technologies. However, the mortality in silks and grains was lower than 50 and 6%, respectively. In addition, more than 49% of the surviving larvae in silks and grains completed the biological cycle. However, all life table parameters were negatively affected in insects that developed in silks and grains of both Bt corn events. In summary, the low biological activity of Bt proteins expressed on silks and grains of YieldGard VT PRO(tm) and PowerCore(tm) corn can contribute to the resistance evolution in S. frugiperda populations. |
| Databáze: | OpenAIRE |
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