Abstract
Abstract Rice ( Oryza sativa L.), a key staple crop, contributes over 20% of the daily caloric intake for more than 3.5 billion people worldwide. The continuous growth of the global population necessitates a steady increase in rice production, promoting advancement in agricultural cultivation systems to achieve both sustainability and productivity. Effective water and nitrogen (N) fertilizer management are crucial for optimizing rice productivity and ensuring environmental sustainability. This study investigates the interactive effects of alternate wetting and drying (AWD) irrigation and different nitrogen sources under contrasting soil conditions, focusing on nitrogen use efficiency (NUE), nitrogen metabolism, and carbohydrate metabolism. Our findings showed that soil type significantly influenced NUE and N metabolism depending on nitrogen fertilizers more than water management under ALN. However, under AHN, both nitrogen fertilizers and water management affected NUE and nitrogen metabolism. In acidic, low-nutrient soils (ALN), AWD decreased nitrogen uptake efficiency and downregulated the nitrogen transport and assimilation-related genes. Conversely, in alkaline, high-nutrient soils (AHN), AWD enhanced nitrogen uptake and assimilation, leading to increased upregulation of nitrogen transporter and assimilation genes. Additionally, AWD altered carbohydrate metabolism, increasing or decreasing carbohydrates accumulation by soil chemical and nutrient conditions. This study provides valuable insights into improving rice productivity by optimizing nitrogen use efficiency and promoting sustainability under various soil and water conditions.
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Claims 8
Claim · model-written summary
Soil type significantly influenced rice nitrogen use efficiency under ALN, depending on nitrogen fertilizer more than water management.
- Taxon
- Rice
Oryza sativae1 - Treatment
- nitrogen fertilizerse0
- Outcome
- NUEe0
- Setting
- ALNe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil type significantly influenced NUE and N metabolism depending on nitrogen fertilizers more than water management under ALN”
e1“Rice ( Oryza sativa L.)”
Claim · model-written summary
Soil type significantly influenced rice nitrogen metabolism under ALN, depending on nitrogen fertilizer more than water management.
- Taxon
- RiceOryza sativae1
- Treatment
- nitrogen fertilizerse0
- Outcome
- N metabolisme0
- Setting
- ALNe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil type significantly influenced NUE and N metabolism depending on nitrogen fertilizers more than water management under ALN”
e1“Rice ( Oryza sativa L.)”
Claim · model-written summary
Under AHN, nitrogen fertilizers and water management affected rice nitrogen use efficiency and nitrogen metabolism.
- Taxon
- RiceOryza sativae1
- Treatment
- nitrogen fertilizers and water managemente0
- Outcome
- NUE and nitrogen metabolisme0
- Setting
- AHNe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under AHN, both nitrogen fertilizers and water management affected NUE and nitrogen metabolism”
e1“Rice ( Oryza sativa L.)”
Claim · model-written summary
Alternate wetting and drying decreased rice nitrogen uptake efficiency in acidic, low-nutrient soils.
- Taxon
- RiceOryza sativae1
- Treatment
- AWDe0
- Outcome
- nitrogen uptake efficiencye0
- Direction
- decreasede0
- Setting
- acidic, low-nutrient soils (ALN)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In acidic, low-nutrient soils (ALN), AWD decreased nitrogen uptake efficiency”
e1“Rice ( Oryza sativa L.)”
Claim · model-written summary
Alternate wetting and drying downregulated rice nitrogen transport and assimilation-related genes in ALN soils.
- Taxon
- RiceOryza sativae1
- Treatment
- AWDe0
- Outcome
- nitrogen transport and assimilation-related genese0
- Direction
- downregulatede0
- Setting
- acidic, low-nutrient soils (ALN)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In acidic, low-nutrient soils (ALN), AWD decreased nitrogen uptake efficiency and downregulated the nitrogen transport and assimilation-related genes”
e1“Rice ( Oryza sativa L.)”
Claim · model-written summary
Alternate wetting and drying enhanced rice nitrogen uptake and assimilation in AHN soils.
- Taxon
- RiceOryza sativae1
- Treatment
- AWDe0
- Outcome
- nitrogen uptake and assimilatione0
- Direction
- enhancede0
- Setting
- alkaline, high-nutrient soils (AHN)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in alkaline, high-nutrient soils (AHN), AWD enhanced nitrogen uptake and assimilation”
e1“Rice ( Oryza sativa L.)”
Claim · model-written summary
Alternate wetting and drying increased upregulation of rice nitrogen transporter and assimilation genes in AHN soils.
- Taxon
- RiceOryza sativae1
- Treatment
- AWDe0
- Outcome
- nitrogen transporter and assimilation genese0
- Direction
- increased upregulatione0
- Setting
- alkaline, high-nutrient soils (AHN)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in alkaline, high-nutrient soils (AHN), AWD enhanced nitrogen uptake and assimilation, leading to increased upregulation of nitrogen transporter and assimilation genes”
e1“Rice ( Oryza sativa L.)”
Claim · model-written summary
Alternate wetting and drying increased or decreased rice carbohydrate accumulation depending on soil chemical and nutrient conditions.
- Taxon
- RiceOryza sativae1
- Treatment
- AWDe0
- Outcome
- carbohydrates accumulatione0
- Direction
- increasing or decreasinge0
- Qualifier
- soil chemical and nutrient conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AWD altered carbohydrate metabolism, increasing or decreasing carbohydrates accumulation by soil chemical and nutrient conditions”
e1“Rice ( Oryza sativa L.)”
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