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. 2024 Aug;33(4):243-254.
doi: 10.1007/s11248-024-00391-z. Epub 2024 Jun 20.

Plant characterization of insect-protected soybean

Duška Stojšin #  1 , Hallison Vertuan #  2 , Chen Meng #  1 , Roger Effertz  1 , Marcia Jose  3 , Debbie Mahadeo  1 , Augusto Crivellari  3 , Christy Hu  4 , Geraldo Berger  3
Affiliations

Plant characterization of insect-protected soybean

Duška Stojšin et al. Transgenic Res. 2024 Aug.

Abstract

Insect-protected soybean (SIP) that produces the Cry1A.105 and Cry2Ab2 insecticidal crystal proteins has been developed to provide protection from feeding damage caused by targeted lepidopteran insect pests. Typically, as part of environmental risk assessment (ERA), plant characterization is conducted, and the data submitted to regulatory agencies prior to commercialization of genetically modified (GM) crops. The objectives of this research were to: (a) compare soybean with and without the SIP trait in plant characterization field trials designed to fulfill requirements for submissions to global regulatory agencies and address China-specific considerations and (b) compare risk assessment conclusions across regions and the methodologies used in the field trials. The soybean with and without the SIP trait in temperate, tropical, and subtropical germplasm were planted in replicated multi-location trials in the USA (in 2012 and 2018) and Brazil (in 2013/2014 and 2017/2018). Agronomic, phenotypic, plant competitiveness, and survival characteristics were assessed for soybean entries with and without the SIP trait. Regardless of genetic background, growing region, season, or testing methodology, the risk assessment conclusions were the same: the evaluated insect-protected soybean did not differ from conventional soybean in evaluated agronomic, phenotypic, competitiveness, and survival characteristics indicating no change in plant pest/weed potential. These results reinforce the concept of data transportability across global regions, different seasons, germplasm, and methodologies that should be considered when assessing environmental risks of GM crops.

Keywords: Data transportability; Environmental risk assessment; Genetically modified crops; Plant characterization.

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Conflict of interest statement

The authors declare no competing interests.

The authors have declared that no competing interests exist. DS, HV, CM, RE, MJ, DM, AC, CH, and GB are employed by Bayer Crop Science at the time of this study.

Figures

Fig. 1
Fig. 1
Correlations associated with plant characteristics between plots under insect-protected soybean (SIP) and conventional control soybean. Data collected in the USA (blue points) and Brazil (red points) in uncultivated field trials. Panels a, b, and c represent soybean characteristics, whereas d, e, and f represent weed characteristics. Pearson’s coefficient (r) was calculated for each characteristic. The black line in each graph represents the Y = X regression line
Fig. 2
Fig. 2
Percentages of total variability attributable to different factors (planting method, planting time, country, observation time, soybean insect-protected (SIP) event, interaction, and residual) for soybean (a) and weed (b) characteristics observed in uncultivated field trials
See this image and copyright information in PMC

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