Resistance status of lepidopteran soybean pests following large-scale use of MON 87701 x MON 89788 soybean in Brazil

Autor(es):Mostrar menos -

Horikoshi, Renato J. ^[1] ; Bernardi, Oderlei ^[2] ; Godoy, Daniela N. ^[2] ; Semeao, Altair A. ^[1] ; Willse, Alan ^[3] ; Corazza, Gustavo O. ^[1] ; Ruthes, Elderson ^[4] ; Fernandes, Davi de S. ^[5] ; Sosa-Gomez, Daniel R. ^[6] ; Bueno, Adeney de F. ^[6] ; Omoto, Celso ^[5] ; Berger, Geraldo U. ^[7] ; Correa, Alberto S. ^[5] ; Martinelli, Samuel ^[3] ; Dourado, Patrick M. ^[7] ; Head, Graham ^[3]

Afiliação do(s) autor(es)

^[1] Bayer Crop Sci, Santa Cruz Das Palmeiras, SP - Brazil

^[2] Univ Fed Santa Maria, Dept Def Fitossanit, Santa Maria, RS - Brazil

^[3] Bayer Crop Sci US, Regulatory Sci, Chesterfield, MO - USA

^[4] Fundacao ABC, Castro, PR - Brazil

^[5] Univ Sao Paulo, Dept Entomol & Acarol, Escola Super Agr Luiz de Queiroz, Piracicaba, SP - Brazil

^[6] Empresa Brasileira Pesquisa Agr Embrapa Soja, Londrina, Parana - Brazil

^[7] Bayer Crop Sci, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 11, n. 1 OCT 29 2021.
• Citações Web of Science: 0

Resumo

Widespread adoption of MON 87701 x MON 89788 soybean, expressing Cry1Ac Bt protein and glyphosate tolerance, has been observed in Brazil. A proactive program was implemented to phenotypically and genotypically monitor Cry1Ac resistance in Chrysodeixis includens (Walker). Recent cases of unexpected injury in MON 87701 x MON 89788 soybean were investigated and a large-scale sampling of larvae on commercial soybean fields was performed to assess the efficacy of this technology and the distribution of lepidopteran pests in Brazil. No significant shift in C. includens susceptibility to Cry1Ac was observed eight years after commercial introduction of this technology in Brazil. F-2 screen results confirmed that the frequency of Cry1Ac resistance alleles remains low and stable in C. includens. Unexpected injury caused by Rachiplusia nu (Guenee) and Crocidosema aporema (Walsingham) in MON 87701 x MON 89788 soybean was detected during the 2020/21 season, and studies confirmed a genetically based alteration in their susceptibility to Cry1Ac. MON 87701 x MON 89788 soybean remains effective against Anticarsia gemmatalis (Hubner), C. includens, Chloridea virescents (Fabricius) and Helicoverpa armigera (Hubner) in Brazil. However, there is evidence of field-evolved resistance to MON 87701 x MON 89788 soybean by the secondary soybean pests R. nu and C. aporema. (AU)

• Processo FAPESP: 19/18282-9 - Prospecção de marcadores moleculares para a avaliação do risco de evolução da resistência de pragas a inseticidas e plantas geneticamente modificadas em agrossistemas agrícolas
• Beneficiário: Celso Omoto
• Modalidade de apoio: Auxílio à Pesquisa - Regular