Abstract
Glyphosate is an herbicide that is applied after non-selective germination and affects plant growth. In this study, glyphosate was applied to Zea mays L. after germination, at a concentration range from 0.017 to 0.145 M in a growth chamber. The effects of this herbicide on some antioxidant enzymes, lipid peroxidation, total chlorophyll and total carbohydrate content were investigated on days 1, 5 and 10 following the application. Results showed that peroxidase (POD), ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT) and glutathione-S-transferase (GST) were increased in the groups treated with glyphosate on days 5 and 10, but the activities of reduced glutathione (GSH) and glutathione reductase (GR) were decreased on day 10. Malondialdehyde (MDA) content indicating lipid peroxidation was increased on days 1, 5 and 10. Changes in total chlorophyll and total carbohydrate contents were found to be time-dependent. These increases and decreases in the antioxidant activities, MDA content, total chlorophyll and total carbohydrate content in Zea mays L. were determined as a symptom of cytotoxicity caused due to glyphosate.
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Claims 5
Claim · model-written summary
Glyphosate increased peroxidase (POD), ascorbate peroxidase (APX) and superoxide dismutase (SOD) activities on days 5 and 10.
- Treatment
- glyphosatee0
- Outcome
- peroxidase (POD), ascorbate peroxidase (APX), superoxide dismutase (SOD)e1
- Direction
- increasede1
- Qualifier
- days 5 and 10e1
- Setting
- growth chambere0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Glyphosate on Some Protective Systems in Zea mays L.”
e0“glyphosate was applied to Zea mays L. after germination, at a concentration range from 0.017 to 0.145 M in a growth chamber”
e1“peroxidase (POD), ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT) and glutathione-S-transferase (GST) were increased in the groups treated with glyphosate on days 5 and 10”
Claim · model-written summary
Glyphosate increased catalase (CAT) and glutathione-S-transferase (GST) activities on days 5 and 10.
- Treatment
- glyphosatee0
- Outcome
- catalase (CAT) and glutathione-S-transferase (GST)e1
- Direction
- increasede1
- Qualifier
- days 5 and 10e1
- Setting
- growth chambere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Glyphosate on Some Protective Systems in Zea mays L.”
e0“glyphosate was applied to Zea mays L. after germination, at a concentration range from 0.017 to 0.145 M in a growth chamber”
e1“peroxidase (POD), ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT) and glutathione-S-transferase (GST) were increased in the groups treated with glyphosate on days 5 and 10”
Claim · model-written summary
Glyphosate decreased reduced glutathione (GSH) and glutathione reductase (GR) activities on day 10.
- Treatment
- glyphosatee0
- Outcome
- activities of reduced glutathione (GSH) and glutathione reductase (GR)e2
- Direction
- decreasede2
- Qualifier
- on day 10e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Glyphosate on Some Protective Systems in Zea mays L.”
e0“glyphosate was applied to Zea mays L. after germination, at a concentration range from 0.017 to 0.145 M in a growth chamber”
e2“the activities of reduced glutathione (GSH) and glutathione reductase (GR) were decreased on day 10”
Claim · model-written summary
Glyphosate increased malondialdehyde (MDA) content, indicating lipid peroxidation, on days 1, 5 and 10.
- Treatment
- glyphosatee0
- Outcome
- Malondialdehyde (MDA) contente3
- Direction
- increasede3
- Qualifier
- days 1, 5 and 10e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Glyphosate on Some Protective Systems in Zea mays L.”
e0“glyphosate was applied to Zea mays L. after germination, at a concentration range from 0.017 to 0.145 M in a growth chamber”
e3“Malondialdehyde (MDA) content indicating lipid peroxidation was increased on days 1, 5 and 10”
Claim · model-written summary
Total chlorophyll and total carbohydrate contents in maize changed in a time-dependent way after glyphosate application.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Glyphosate on Some Protective Systems in Zea mays L.”
e4“Changes in total chlorophyll and total carbohydrate contents were found to be time-dependent”
The same questions in other papers
glyphosate · physiology: antioxidant enzymes · Zea mays (maize)Positive and negative results
2 in the opposite direction
- positive
- positive
glyphosate · physiology: oxidative · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- no effect
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.