Abstract
Glyphosate herbicide caused oxidative stress and exhibited negative effects on photosynthesis and gas exchange of peanut [Arachis hypogaea L. cv. Giza (G) 5 and 6] leaves. We demonstrated that glyphosate caused various morphological symptoms, such as chlorosis, yellowing, and appearance of curly edges in leaves treated with high doses of herbicide in both cultivars; however, the G5 cultivar was more sensitive and showed severer symptoms. Glyphosate lowered photosynthesis and reduced contents of pigments and proteins as well as free amino acids in both cultivars. The gas-exchange parameters, such as photosynthetic (P N) and transpiration rate (E), were highly altered by the glyphosate application. For example, P N and E were reduced by 65 and 61%, respectively, in G5 treated with high dose of glyphosate compared with control. Antioxidant enzymes, such as peroxidase, catalase, ascorbate peroxidase, and superoxide dismutase were induced by both low and high concentrations in the glyphosate-treated leaves. Moreover, the level of lipid peroxidation, indicated by a malondialdehyde content, as well as the hydrogen peroxide content increased in the glyphosate-treated leaves. However, an increase in total antioxidant activity was detected in leaves and this reflected changes in the antioxidant status and accumulation of antioxidants as a defense mechanism against glyphosate toxicity in peanut.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
High glyphosate doses caused chlorosis, yellowing and curled leaf edges in both peanut cultivars.
- Taxon
- peanut
Arachis hypogaeat0 - Organ / stage
- leavese0
- Treatment
- high doses of herbicidee0
- Outcome
- chlorosis, yellowing, and appearance of curly edgese0
- Direction
- causede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We demonstrated that glyphosate caused various morphological symptoms, such as chlorosis, yellowing, and appearance of curly edges in leaves treated with high doses of herbicide in both cultivars; however, the G5 cultivar was more sensitive and showed severer symptoms.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
G5 was more sensitive to glyphosate and showed more severe symptoms.
- Taxon
- peanutArachis hypogaeat0
- Material
- G5 cultivare0
- Treatment
- glyphosatet0
- Outcome
- symptomse0
- Direction
- severere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“however, the G5 cultivar was more sensitive and showed severer symptoms.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
Glyphosate lowered photosynthesis in both peanut cultivars.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Glyphosatee0
- Outcome
- photosynthesise0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate lowered photosynthesis and reduced contents of pigments and proteins as well as free amino acids in both cultivars.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
Glyphosate reduced pigment, protein and free amino acid contents in both peanut cultivars.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Glyphosatee0
- Outcome
- contents of pigments and proteins as well as free amino acidse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate lowered photosynthesis and reduced contents of pigments and proteins as well as free amino acids in both cultivars.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
A high glyphosate dose reduced G5 photosynthetic rate by 65% versus control.
- Taxon
- peanutArachis hypogaeat0
- Material
- G5e0
- Treatment
- high dose of glyphosatee0
- Outcome
- P Ne0
- Direction
- reducede0
- Value
- 65e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P N and E were reduced by 65 and 61%, respectively, in G5 treated with high dose of glyphosate compared with control.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
A high glyphosate dose reduced G5 transpiration rate by 61% versus control.
- Taxon
- peanutArachis hypogaeat0
- Material
- G5e0
- Treatment
- high dose of glyphosatee0
- Outcome
- Ee0
- Direction
- reducede0
- Value
- 61%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P N and E were reduced by 65 and 61%, respectively, in G5 treated with high dose of glyphosate compared with control.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
Low and high glyphosate concentrations induced peroxidase, catalase, ascorbate peroxidase and superoxide dismutase in leaves.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- leavese0
- Treatment
- glyphosatet0
- Outcome
- peroxidase, catalase, ascorbate peroxidase, and superoxide dismutasee0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Antioxidant enzymes, such as peroxidase, catalase, ascorbate peroxidase, and superoxide dismutase were induced by both low and high concentrations in the glyphosate-treated leaves.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
Glyphosate increased leaf lipid peroxidation indicated by malondialdehyde content.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- leavese0
- Treatment
- glyphosatet0
- Outcome
- level of lipid peroxidatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, the level of lipid peroxidation, indicated by a malondialdehyde content, as well as the hydrogen peroxide content increased in the glyphosate-treated leaves.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
Glyphosate increased hydrogen peroxide content in leaves.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- leavese0
- Treatment
- glyphosatet0
- Outcome
- hydrogen peroxide contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, the level of lipid peroxidation, indicated by a malondialdehyde content, as well as the hydrogen peroxide content increased in the glyphosate-treated leaves.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
Claim · model-written summary
Glyphosate increased total antioxidant activity in peanut leaves.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- leavese0
- Treatment
- glyphosatet0
- Outcome
- total antioxidant activitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, an increase in total antioxidant activity was detected in leaves and this reflected changes in the antioxidant status and accumulation of antioxidants as a defense mechanism against glyphosate toxicity in peanut.”
t0“Photosynthesis, antioxidant status and gas-exchange are altered by glyphosate application in peanut leaves”
The same questions in other papers
glyphosate · physiology: pigments · Arachis hypogaea (peanut)Results agree
1 paper in the same direction as this paper
- negative
glyphosate · disease · Arachis hypogaea (peanut)Results agree
1 paper in the same direction as this paper
- no effect
herbicide · physiology: pigments · Arachis hypogaea (peanut)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.