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Related Experiment Video

Updated: Nov 20, 2025

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.
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Evaluation on reprogramed biological processes in transgenic maize varieties using transcriptomics and metabolomics.

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Summary
This summary is machine-generated.

Genetic engineering in maize (ZD958) showed minimal molecular changes. Environmental and genetic background effects significantly outweighed unintended gene effects on molecular profiles.

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Area of Science:

  • Agricultural Science
  • Molecular Biology
  • Genetics

Background:

  • Genetic engineering (GE) offers maize productivity improvements but raises concerns about unintended effects.
  • Previous studies faced limitations in detecting unintended effects in genetically modified organisms (GMOs).

Purpose of the Study:

  • To investigate the molecular profiling (transcript and metabolite) changes in genetically modified maize Zhengdan958 (ZD958) with a herbicide and insect resistance (HIR) gene cassette.
  • To compare the impact of gene modification versus environmental and genetic background variations on molecular profiles.

Main Methods:

  • Analysis of differential abundant genes (DAGs) and metabolites (DAMs) in transgenic ZD958 events compared to non-transgenic controls.
  • Comparison of molecular profiles across different growing environments in three Chinese ecological regions.
  • Evaluation of transgenic events against parental lines and other genetic backgrounds.

Main Results:

  • The introduction of the HIR gene cassette resulted in a limited number of differentially abundant genes and metabolites.
  • Environmental variations induced approximately 10 times more changes in DAGs and DAMs compared to gene effects.
  • Differences between transgenic events and parental lines were comparable to those influenced by genetic background, not solely gene modification.

Conclusions:

  • Environmental factors and genetic background have a more substantial impact on maize molecular profiling than the genetic modification itself.
  • The study indicates marginal pleiotropic effects of the introduced genes and emphasizes the importance of environmental influences.