Abstract
Abstract The transgenic Liberty Link ® (LL) soybean is tolerant to glufosinate, conferred by the enzyme phosphinothricin acetyltransferase (PAT), which is encoded by the pat gene from Streptomyces viridochromogenes . Because symptoms of injury can be observed in soybean [ Glycine max (L.) Merr.] plants in some situations, this study evaluated the effects of rates of glufosinate on agronomic performance; quality of LL soybean seeds; and the ammonia, glufosinate, and N -acetyl- l -glufosinate concentration (NAG) in soybeans with and without the pat gene after application of increasing glufosinate rates. Field and greenhouse experiments were conducted; the first evaluated the selectivity of glufosinate in LL soybeans, and the second evaluated the metabolic changes in soybeans with (LL) and without (RR2) the pat gene, after application of glufosinate. For fieldwork, application of glufosinate at rates up to four times the maximum recommended caused initial injury symptoms (up to 38.5%) in LL soybean plants. However, no negative effect was found on seed quality and agronomic performance of LL plants, including yield. This shows the selectivity of glufosinate promoted by pat gene insertion for application in POST (V4), in LL soybean. For the greenhouse experiment, it was concluded that the LL soybean plants presented high glufosinate metabolism, lower ammonia concentration, and no reduction in dry matter, in comparison with RR2 soybean, after application of high rates of glufosinate.
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Claims 5
Claim · model-written summary
Glufosinate caused initial injury of up to 38.5% in LL soybean at up to four times the recommended rate.
- Taxon
- soybean
Glycine maxe0 - Material
- LLe0
- Treatment
- glufosinate at rates up to four times the maximum recommendede0
- Outcome
- initial injury symptomse0
- Value
- up to 38.5%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of glufosinate at rates up to four times the maximum recommended caused initial injury symptoms (up to 38.5%) in LL soybean plants”
Claim · model-written summary
Glufosinate had no negative effect on LL soybean seed quality or agronomic performance, including yield.
Not reportedTaxonTreatmentComparator
Verbatim
e0“no negative effect was found on seed quality and agronomic performance of LL plants, including yield”
Claim · model-written summary
LL soybean showed high glufosinate metabolism relative to RR2 after high-rate application.
- Taxon
- soybeanGlycine maxe0
- Material
- LLe0
- Treatment
- high rates of glufosinatee0
- Outcome
- glufosinate metabolisme0
- Direction
- highe0
- Comparator
- RR2 soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LL soybean plants presented high glufosinate metabolism, lower ammonia concentration, and no reduction in dry matter, in comparison with RR2 soybean, after application of high rates of glufosinate”
Claim · model-written summary
LL soybean had lower ammonia concentration than RR2 after high-rate glufosinate application.
- Taxon
- soybeanGlycine maxe0
- Material
- LLe0
- Treatment
- high rates of glufosinatee0
- Outcome
- ammonia concentratione0
- Direction
- lowere0
- Comparator
- RR2 soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LL soybean plants presented high glufosinate metabolism, lower ammonia concentration, and no reduction in dry matter, in comparison with RR2 soybean, after application of high rates of glufosinate”
Claim · model-written summary
LL soybean had no reduction in dry matter relative to RR2 after high-rate glufosinate application.
- Taxon
- soybeanGlycine maxe0
- Material
- LLe0
- Treatment
- high rates of glufosinatee0
- Outcome
- dry mattere0
- Direction
- no reductione0
- Comparator
- RR2 soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LL soybean plants presented high glufosinate metabolism, lower ammonia concentration, and no reduction in dry matter, in comparison with RR2 soybean, after application of high rates of glufosinate”
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See all 7 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.