Abstract
The cultivation of glyphosate-resistant (GR) soybeans has continuously increased worldwide in recent years mainly due to the importance of glyphosate in current weed management systems. However, not much has been done to understand eventual effects of glyphosate application on GR soybean physiology, especially those related to seed composition with potential effects on human health. Two experiments were conducted to evaluate the effects of glyphosate application on GR soybeans compared with its near-isogenic non-GR parental lines. Results of the first experiment showed that glyphosate application resulted in significant decreases in shoot nutrient concentrations, photosynthetic parameters, and biomass production. Similar trends were observed for the second experiment, although glyphosate application significantly altered seed nutrient concentrations and polyunsaturated fatty acid percentages. Glyphosate resulted in significant decreases in polyunsaturated linoleic acid (18:2n-6) (2.3% decrease) and linolenic acid (18:3n-3) (9.6% decrease) and a significant increase in monounsaturated fatty acids 17:1n-7 (30.3% increase) and 18:1n-7 (25% increase). The combined observations of decreased photosynthetic parameters and low nutrient availability in glyphosate-treated plants may explain potential adverse effects of glyphosate in GR soybeans.
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Claims 11
Claim · model-written summary
Glyphosate application significantly decreased shoot nutrient concentrations in soybean.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- glyphosate applicatione0
- Outcome
- shoot nutrient concentrationse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results of the first experiment showed that glyphosate application resulted in significant decreases in shoot nutrient concentrations, photosynthetic parameters, and biomass production.”
t0“Soybean”
Claim · model-written summary
Glyphosate application significantly decreased photosynthetic parameters in soybean.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- glyphosate applicatione0
- Outcome
- photosynthetic parameterse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results of the first experiment showed that glyphosate application resulted in significant decreases in shoot nutrient concentrations, photosynthetic parameters, and biomass production.”
t0“Soybean”
Claim · model-written summary
Glyphosate application significantly decreased biomass production in soybean.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- glyphosate applicatione0
- Outcome
- biomass productione0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results of the first experiment showed that glyphosate application resulted in significant decreases in shoot nutrient concentrations, photosynthetic parameters, and biomass production.”
t0“Soybean”
Claim · model-written summary
The second experiment showed similar declines in shoot nutrients, photosynthetic parameters and biomass.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- glyphosate applicatione0
- Outcome
- Similar trendse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar trends were observed for the second experiment, although glyphosate application significantly altered seed nutrient concentrations and polyunsaturated fatty acid percentages.”
t0“Soybean”
Claim · model-written summary
Glyphosate significantly altered seed nutrient concentrations.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- glyphosate applicatione0
- Outcome
- seed nutrient concentrationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar trends were observed for the second experiment, although glyphosate application significantly altered seed nutrient concentrations and polyunsaturated fatty acid percentages.”
t0“Soybean”
Claim · model-written summary
Glyphosate significantly altered polyunsaturated fatty acid percentages.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- glyphosate applicatione0
- Outcome
- polyunsaturated fatty acid percentagese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar trends were observed for the second experiment, although glyphosate application significantly altered seed nutrient concentrations and polyunsaturated fatty acid percentages.”
t0“Soybean”
Claim · model-written summary
Glyphosate changed seed linoleic acid (18:2n-6) by 2.3%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Glyphosatee0
- Outcome
- linoleic acid (18:2n-6)e0
- Direction
- decreasese0
- Value
- 2.3%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate resulted in significant decreases in polyunsaturated linoleic acid (18:2n-6) (2.3% decrease) and linolenic acid (18:3n-3) (9.6% decrease) and a significant increase in monounsaturated fatty acids 17:1n-7 (30.3% increase) and 18:1n-7 (25% increase).”
t0“Soybean”
Claim · model-written summary
Glyphosate changed seed linolenic acid (18:3n-3) by 9.6%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Glyphosatee0
- Outcome
- linolenic acid (18:3n-3)e0
- Direction
- decreasese0
- Value
- 9.6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate resulted in significant decreases in polyunsaturated linoleic acid (18:2n-6) (2.3% decrease) and linolenic acid (18:3n-3) (9.6% decrease) and a significant increase in monounsaturated fatty acids 17:1n-7 (30.3% increase) and 18:1n-7 (25% increase).”
t0“Soybean”
Claim · model-written summary
Glyphosate changed seed 17:1n-7 by 30.3%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate resulted in significant decreases in polyunsaturated linoleic acid (18:2n-6) (2.3% decrease) and linolenic acid (18:3n-3) (9.6% decrease) and a significant increase in monounsaturated fatty acids 17:1n-7 (30.3% increase) and 18:1n-7 (25% increase).”
t0“Soybean”
Claim · model-written summary
Glyphosate changed seed 18:1n-7 by 25%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate resulted in significant decreases in polyunsaturated linoleic acid (18:2n-6) (2.3% decrease) and linolenic acid (18:3n-3) (9.6% decrease) and a significant increase in monounsaturated fatty acids 17:1n-7 (30.3% increase) and 18:1n-7 (25% increase).”
t0“Soybean”
Claim · model-written summary
Reduced photosynthesis and nutrient availability may explain adverse glyphosate effects in GR soybeans.
- Taxon
- soybeansGlycine maxe0
- Treatment
- glyphosatee0
- Outcome
- potential adverse effectse0
- Qualifier
- decreased photosynthetic parameters and low nutrient availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined observations of decreased photosynthetic parameters and low nutrient availability in glyphosate-treated plants may explain potential adverse effects of glyphosate in GR soybeans.”
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See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.