Data/hora: 09/06/2024 13:54:15

Provedor de dados: | 65
País: | Brazil
Título: | Biological activity of Bt proteins expressed in different structures of transgenic corn against  Spodoptera frugiperda
Autores: | Bernardi,Daniel; Bernardi,Oderlei; Horikoshi,Renato Jun; Salmeron,Eloisa; Okuma,Daniela Miyuki; Omoto,Celso.
Data: | 2016-06-01
Ano: | 2016
Palavras-chave: | Fall armyworm; Bacillus thuringiensis; Bt corn; Insect resistance management.
Resumo: | ABSTRACT:  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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000601019
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20150047
Formato: | text/html
Fonte: | Ciência Rural  v.46 n.6 2016
Fonte: | info:eu-repo/semantics/openAccess