Abstract
Abstract The effects of water‐deficit stress and foliar application of ascorbic acid were studied in leaves of Zea mays L. (single cross 704). The activity of antioxidant enzymes, superoxide dismutase, peroxidase, catalase and polyphenol oxidase was clearly increased by water‐deficit stress. Foliar application of ascorbic acid reduced stress‐induced and antioxidative enzymes activities. Proline and malondialdehyde levels were decreased in water‐deficit stressed plants by ascorbic acid application. It seems that, ascorbic acid application helps the plants for better resistance under the stress by inactivation and scavenging of free radicals. Chlorophyll content was also decreased by water‐deficit stress. The significant decrease of chlorophyll content was obtained in stressed plant than control. Ascorbate was oxidized to dehydroascorbate whereupon total ascorbate was decreased and dehydroascorbate was increased in leaves. The results of the present study indicated that ascorbic acid reduced the harmful effects of reactive oxygen species and improved plant resistance to water stress. In brief, ascorbic acid treatment reduced the damaging action of drought and decreased enzyme activity due to scavenging of reactive oxygen species; thereupon it may be effective for the improvement of stressed plants in arid and semi‐arid regions.
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Claims 11
Claim · model-written summary
Water deficit increased superoxide dismutase, peroxidase and catalase activities in maize leaves.
- Organ / stage
- leavese1
- Treatment
- water‐deficit stresse0
- Outcome
- superoxide dismutase, peroxidase, catalasee0
- Direction
- increasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of antioxidant enzymes, superoxide dismutase, peroxidase, catalase and polyphenol oxidase was clearly increased by water‐deficit stress”
e1“leaves of Zea mays L.”
Claim · model-written summary
Water deficit increased polyphenol oxidase activity in maize leaves.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of antioxidant enzymes, superoxide dismutase, peroxidase, catalase and polyphenol oxidase was clearly increased by water‐deficit stress”
e1“leaves of Zea mays L.”
Claim · model-written summary
Foliar ascorbic acid reduced stress-induced antioxidant enzyme activities.
- Treatment
- Foliar application of ascorbic acide0
- Outcome
- antioxidative enzymes activitiese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of ascorbic acid reduced stress‐induced and antioxidative enzymes activities”
e1“leaves of Zea mays L.”
Claim · model-written summary
Ascorbic acid decreased proline in water-deficit-stressed maize.
- Treatment
- ascorbic acid applicatione0
- Outcome
- Prolinee0
- Direction
- decreasede0
- Qualifier
- water‐deficit stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline and malondialdehyde levels were decreased in water‐deficit stressed plants by ascorbic acid application”
e1“leaves of Zea mays L.”
Claim · model-written summary
Ascorbic acid decreased malondialdehyde in water-deficit-stressed maize.
- Treatment
- ascorbic acid applicatione0
- Outcome
- malondialdehyde levelse0
- Direction
- decreasede0
- Qualifier
- water‐deficit stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline and malondialdehyde levels were decreased in water‐deficit stressed plants by ascorbic acid application”
e1“leaves of Zea mays L.”
Claim · model-written summary
Water deficit significantly decreased chlorophyll content relative to control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The significant decrease of chlorophyll content was obtained in stressed plant than control”
e1“leaves of Zea mays L.”
Claim · model-written summary
Ascorbate was oxidized to dehydroascorbate in maize leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ascorbate was oxidized to dehydroascorbate”
e1“leaves of Zea mays L.”
Claim · model-written summary
Total ascorbate decreased in maize leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total ascorbate was decreased and dehydroascorbate was increased in leaves”
e1“leaves of Zea mays L.”
Claim · model-written summary
Dehydroascorbate increased in maize leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total ascorbate was decreased and dehydroascorbate was increased in leaves”
e1“leaves of Zea mays L.”
Claim · model-written summary
Ascorbic acid reduced harmful reactive oxygen species effects and improved water stress resistance.
- Treatment
- ascorbic acide0
- Compound
- reactive oxygen speciese0
- Outcome
- plant resistance to water stresse0
- Direction
- improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbic acid reduced the harmful effects of reactive oxygen species and improved plant resistance to water stress”
e1“leaves of Zea mays L.”
Claim · model-written summary
The authors suggested ascorbic acid treatment may improve stressed plants in arid and semi-arid regions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it may be effective for the improvement of stressed plants in arid and semi‐arid regions”
e1“leaves of Zea mays L.”
The same questions in other papers
ascorbic acid · physiology: osmolytes · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
ascorbic acid · physiology: oxidative · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
drought · physiology: antioxidant enzymes · Zea mays (maize)Results differ
27 papers in the same direction as this paper · 32 in the opposite direction
- positive
- positive
- positive
56 papers more in this group
See all 60 papers →application · physiology: enzyme activity · Zea mays (maize)Positive and negative results
13 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
11 papers more in this group
See all 15 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.