Abstract
The influence of foliar and soil applications of iron (Fe) on variations in antioxidant activity of peanut was investigated in a field experiment. For each method, five levels of Fe–ethylenediamine-N,N'-bis (EDDHA) (in the soil application, 0, 5, 10, 15 and 20 kg ha−1, and in the foliar application, 0, 1, 2, 3 or 4 gL−1) were applied. The results revealed that the Fe content of leaves increased significantly by both application methods. In addition, immediately after every spraying of Fe on the leaves, the activities changed significantly: Catalase and peroxidase increased but superoxide dismutase decreased during the growing season. By soil applications, the enzyme activities increased gradually and yet continuously decreased at the last period of the plant growth. For both applications, greater levels of Fe (4 gL−1 and 20 kg Fe-EDDHA ha−1 for sprayed and soil applications, respectively) had more positive effects on the activities of peroxidase and catalase than on superoxide dismutase.
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 5
Claim · model-written summary
Leaf Fe content of peanut increased significantly with both foliar and soil Fe application.
- Taxon
- Peanut
Arachis hypogaeat0 - Organ / stage
- leavese1
- Treatment
- both application methodse1
- Outcome
- Fe content of leavese1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the Fe content of leaves increased significantly by both application methods”
t0“Peanut”
Claim · model-written summary
After each foliar Fe spraying, catalase and peroxidase activities in peanut changed significantly, increasing during the growing season.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- spraying of Fe on the leavese1
- Outcome
- Catalase and peroxidasee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“immediately after every spraying of Fe on the leaves, the activities changed significantly: Catalase and peroxidase increased”
t0“Peanut”
Claim · model-written summary
After each foliar Fe spraying, superoxide dismutase activity in peanut changed significantly, decreasing during the growing season.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- spraying of Fe on the leavese1
- Outcome
- superoxide dismutasee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“immediately after every spraying of Fe on the leaves, the activities changed significantly: Catalase and peroxidase increased but superoxide dismutase decreased”
t0“Peanut”
Claim · model-written summary
With soil Fe application, enzyme activities in peanut increased gradually but decreased continuously at the last period of plant growth.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- soil applicationse1
- Outcome
- enzyme activitiese1
- Direction
- increased graduallye1
- Qualifier
- continuously decreased at the last period of the plant growthe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“By soil applications, the enzyme activities increased gradually and yet continuously decreased at the last period of the plant growth”
t0“Peanut”
Claim · model-written summary
The greatest Fe levels (4 g/L foliar, 20 kg Fe-EDDHA/ha soil) had more positive effects on peroxidase and catalase activities than on superoxide dismutase in peanut.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- greater levels of Fee1
- Outcome
- activities of peroxidase and catalasee1
- Direction
- more positive effectse1
- Qualifier
- than on superoxide dismutasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“greater levels of Fe (4 gL−1 and 20 kg Fe-EDDHA ha−1 for sprayed and soil applications, respectively) had more positive effects on the activities of peroxidase and catalase than on superoxide dismutase”
t0“Peanut”
The same questions in other papers
iron atom · physiology: antioxidant enzymes · Arachis hypogaea (peanut)Results agree
1 paper in the same direction as this paper
- positive
application · physiology: antioxidant enzymes · Arachis hypogaea (peanut)Results agree
11 papers in the same direction as this paper
- positive
- positive
- positive
8 papers more in this group
See all 12 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.