Abstract
Nickel (Ni) stress severely impairs rice growth and productivity by disrupting physiological functions and inducing oxidative damage. This study investigated the individual and combined effects of nitric oxide (NO) and L -arginine (L -Arg) in mitigating Ni toxicity in rice (Oryza sativa L.). Ni exposure reduced plant biomass, chlorophyll content, photosynthesis, water use efficiency (WUE), and membrane stability, and increased Ni uptake, reactive oxygen species (ROS), malondialdehyde (MDA), electrolyte leakage (EL), and methylglyoxal (MG). Antioxidant enzyme activities and osmolyte levels were also altered. Foliar application of NO or L -Arg partially alleviated these effects, but the combined treatment (NO+L -Arg) provided superior protection. Co-treated plants showed improved growth, chlorophyll content, gas exchange, relative water content (RWC), and leaf water potential. Oxidative stress markers (H2 O2 , MDA, EL, and MG) were reduced, whereas antioxidant enzyme and glyoxalase system activities were stabilized. Soluble sugar and glycine betaine (GB) levels were optimized, and Ni accumulation in tissues was significantly decreased. Notably, the combined treatment enhanced expression of stress-related and metal detoxification genes (OsMTP1 , OsPCS5 , HSP70 , and OsZIP1 ). These findings highlight the synergistic role of NO andL -Arg in enhancing rice tolerance to Ni stress and suggest its potential as a sustainable strategy for improving crop resilience in contaminated soils.
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Claims 14
Claim · model-written summary
Nickel reduced rice biomass, chlorophyll, photosynthesis, water use efficiency and membrane stability.
- Taxon
- rice
Oryza sativat0 - Treatment
- Ni exposuree0
- Outcome
- plant biomass, chlorophyll content, photosynthesis, water use efficiency (WUE), and membrane stabilitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni exposure reduced plant biomass, chlorophyll content, photosynthesis, water use efficiency (WUE), and membrane stability”
t0“rice”
Claim · model-written summary
Nickel increased uptake and oxidative damage indicators.
- Taxon
- riceOryza sativat0
- Outcome
- Ni uptake, reactive oxygen species (ROS), malondialdehyde (MDA), electrolyte leakage (EL), and methylglyoxal (MG)e0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased Ni uptake, reactive oxygen species (ROS), malondialdehyde (MDA), electrolyte leakage (EL), and methylglyoxal (MG)”
t0“rice”
Claim · model-written summary
Nickel altered antioxidant enzyme activities and osmolyte levels.
- Taxon
- riceOryza sativat0
- Outcome
- Antioxidant enzyme activities and osmolyte levelse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Antioxidant enzyme activities and osmolyte levels were also altered”
t0“rice”
Claim · model-written summary
Foliar NO partially alleviated nickel effects.
- Taxon
- riceOryza sativat0
- Treatment
- Foliar application of NOe0
- Outcome
- these effectse0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of NO or L -Arg partially alleviated these effects”
t0“rice”
Claim · model-written summary
Foliar L-arginine partially alleviated nickel effects.
- Taxon
- riceOryza sativat0
- Treatment
- L -Arge0
- Outcome
- these effectse0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of NO or L -Arg partially alleviated these effects”
t0“rice”
Claim · model-written summary
Combined NO and L-arginine provided superior protection.
- Taxon
- riceOryza sativat0
- Treatment
- NO+L -Arge0
- Outcome
- protectione0
- Direction
- superiore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combined treatment (NO+L -Arg) provided superior protection”
t0“rice”
Claim · model-written summary
Co-treated plants showed improved growth, chlorophyll and gas exchange.
- Taxon
- riceOryza sativat0
- Treatment
- Co-treatede0
- Outcome
- growth, chlorophyll content, gas exchangee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Co-treated plants showed improved growth, chlorophyll content, gas exchange, relative water content (RWC), and leaf water potential”
t0“rice”
Claim · model-written summary
Co-treated plants showed improved relative water content and leaf water potential.
- Taxon
- riceOryza sativat0
- Treatment
- Co-treatede0
- Outcome
- relative water content (RWC), and leaf water potentiale0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Co-treated plants showed improved growth, chlorophyll content, gas exchange, relative water content (RWC), and leaf water potential”
t0“rice”
Claim · model-written summary
Combined treatment reduced oxidative stress markers.
- Taxon
- riceOryza sativat0
- Outcome
- Oxidative stress markers (H2 O2 , MDA, EL, and MG)e0
- Direction
- reducede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oxidative stress markers (H2 O2 , MDA, EL, and MG) were reduced”
t0“rice”
Claim · model-written summary
Combined treatment stabilized antioxidant enzyme and glyoxalase activities.
- Taxon
- riceOryza sativat0
- Outcome
- antioxidant enzyme and glyoxalase system activitiese0
- Direction
- stabilizede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“antioxidant enzyme and glyoxalase system activities were stabilized”
t0“rice”
Claim · model-written summary
Combined treatment optimized soluble sugar and glycine betaine levels.
- Taxon
- riceOryza sativat0
- Outcome
- Soluble sugar and glycine betaine (GB) levelse0
- Direction
- optimizede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soluble sugar and glycine betaine (GB) levels were optimized”
t0“rice”
Claim · model-written summary
Combined treatment significantly decreased tissue nickel accumulation.
- Taxon
- riceOryza sativat0
- Outcome
- Ni accumulation in tissuese0
- Direction
- decreasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni accumulation in tissues was significantly decreased”
t0“rice”
Claim · model-written summary
Combined treatment enhanced expression of four stress and detoxification genes.
- Taxon
- riceOryza sativat0
- Treatment
- the combined treatmente0
- Gene
- OsMTP1 , OsPCS5 , HSP70 , and OsZIP1e0
- Outcome
- expression of stress-related and metal detoxification genese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combined treatment enhanced expression of stress-related and metal detoxification genes (OsMTP1 , OsPCS5 , HSP70 , and OsZIP1 )”
t0“rice”
Claim · model-written summary
The authors suggest combined treatment as a strategy for crop resilience in contaminated soils.
- Taxon
- riceOryza sativat0
- Outcome
- sustainable strategy for improving crop resilience in contaminated soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggest its potential as a sustainable strategy for improving crop resilience in contaminated soils”
t0“rice”
The same questions in other papers
nickel atom · physiology: water · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- negative
heavy metal · physiology: water · Oryza sativa (rice)Results agree
5 papers in the same direction as this paper
- negative
- negative
- negative
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.