Abstract
THIS STUDY evaluated the impact of cobalt (Co) nutrition at the optimum concentration on growth and oxidative stress in two Egyptian rice varieties (Sakha 104 and Giza 178) under drought stress. The stress was applied at different irrigation intervals (six and eight days), and irrigation after four days was set as control through the reproductive stage. The roots and shoots parameters (lengths, and fresh and dry weights), oxidative stress biomarkers; membrane injury, lipid peroxidation, proline accumulation, protein content, total phenols, and flavonoids contents, along with the activities of catalase (CAT), peroxidase (POX), and polyphenol oxidase (PPO) enzymes, were used to evaluate the strength of reactive oxygen species (ROS) detoxification in both rice varieties. Water deficit and oxidative stress affected Giza 178 less than Sakha 104. Stressed rice plants of both varieties treated with Co at the optimum concentration reduced the hurtful impact of drought, particularly in Giza 178, by enhancing root and shoot growth and biomass and the efficiency of the oxidative defense system. This was obvious in a substantial decrease in membrane injury and lipid peroxidation, while a significant increase was apparent in proline and protein content, total phenols, and total flavonoids. Additionally, the dynamic activities of antioxidant enzymes were substantially higher in Giza 178 than Sakha 104, when compared to untreated plants. The findings could be helpful in research projects aimed at developing anti-drought stress techniques for rice plants.
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Claims 7
Claim · model-written summary
Giza 178 was less affected by water deficit and oxidative stress than Sakha 104.
- Taxon
- Oryza sativa L.
Oryza sativat0 - Material
- Giza 178e0
- Outcome
- Water deficit and oxidative stresse0
- Direction
- lesse0
- Comparator
- Sakha 104e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit and oxidative stress affected Giza 178 less than Sakha 104.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Cobalt treatment under drought enhanced root and shoot growth and biomass in both varieties, particularly Giza 178.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- Co at the optimum concentratione0
- Outcome
- root and shoot growth and biomasse0
- Direction
- enhancinge0
- Qualifier
- particularly in Giza 178e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stressed rice plants of both varieties treated with Co at the optimum concentration reduced the hurtful impact of drought, particularly in Giza 178, by enhancing root and shoot growth and biomass and the efficiency of the oxidative defense system.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Cobalt treatment under drought enhanced oxidative defense efficiency in both rice varieties.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- Co at the optimum concentratione0
- Outcome
- efficiency of the oxidative defense systeme0
- Direction
- enhancinge0
- Qualifier
- particularly in Giza 178e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stressed rice plants of both varieties treated with Co at the optimum concentration reduced the hurtful impact of drought, particularly in Giza 178, by enhancing root and shoot growth and biomass and the efficiency of the oxidative defense system.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Cobalt treated drought stressed plants showed a substantial decrease in membrane injury and lipid peroxidation.
- Taxon
- Oryza sativa L.Oryza sativat0
- Outcome
- membrane injury and lipid peroxidatione0
- Direction
- decreasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was obvious in a substantial decrease in membrane injury and lipid peroxidation, while a significant increase was apparent in proline and protein content, total phenols, and total flavonoids.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Cobalt treated drought stressed plants showed a significant increase in proline and protein content and total phenols.
- Taxon
- Oryza sativa L.Oryza sativat0
- Outcome
- proline and protein content, total phenolse0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was obvious in a substantial decrease in membrane injury and lipid peroxidation, while a significant increase was apparent in proline and protein content, total phenols, and total flavonoids.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Cobalt treated drought stressed plants showed a significant increase in total flavonoids.
- Taxon
- Oryza sativa L.Oryza sativat0
- Outcome
- total flavonoidse0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was obvious in a substantial decrease in membrane injury and lipid peroxidation, while a significant increase was apparent in proline and protein content, total phenols, and total flavonoids.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Antioxidant enzyme activities were substantially higher in Giza 178 than Sakha 104 compared with untreated plants.
- Taxon
- Oryza sativa L.Oryza sativat0
- Material
- Giza 178e0
- Outcome
- activities of antioxidant enzymese0
- Direction
- highere0
- Qualifier
- when compared to untreated plantse0
- Comparator
- Sakha 104e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additionally, the dynamic activities of antioxidant enzymes were substantially higher in Giza 178 than Sakha 104, when compared to untreated plants.”
t0“Rice (Oryza sativa L.)”
The same questions in other papers
cobalt atom · growth · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
cobalt atom · disease · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
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.