Abstract
Abstract This work investigates the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2. Plants were grown hydroponically in growth chambers with a 12-h photoperiod at either 370 or 700 µmol CO2 mol−1 concentration. Plant dry mass (DM), grain yield and macro- and micronutrient concentrations of vegetative organs and grains were determined. Elevated CO2 increased biomass at tillering, and this was largely due to an increase in root mass by 160%. Elevated CO2 had no effect on total nutrient uptake (N, P, K, Mg and Ca). However, nutrient partitioning among organs was significantly altered. N partitioning to leaf blades was significantly decreased, whereas the N partitioning into the leaf sheaths and roots was increased. Nutrient use efficiency of N, P, K, and Mg in all organs was significantly increased at elevated CO2. At harvest maturity, grain yield was increased by 27% at elevated CO2 while grain (protein) concentration was decreased by a similar magnitude (28%), suggesting that critical nutrient requirements for rice might need to be reassessed with global climate change.
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 9
Claim · model-written summary
Elevated CO2 increased biomass at tillering in rice.
- Taxon
- rice
Oryza sativae1 - Organ / stage
- tilleringe2
- Treatment
- Elevated CO2e2
- Outcome
- biomass at tilleringe2
- Direction
- increasede2
- Setting
- hydroponically in growth chamberse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were grown hydroponically in growth chambers with a 12-h photoperiod”
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e2“Elevated CO2 increased biomass at tillering, and this was largely due to an increase in root mass by 160%”
Claim · model-written summary
Elevated CO2 increased root mass of rice by 160% at tillering.
- Taxon
- riceOryza sativae1
- Organ / stage
- roote2
- Treatment
- Elevated CO2e2
- Outcome
- root masse2
- Direction
- increasee2
- Value
- 160%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e2“Elevated CO2 increased biomass at tillering, and this was largely due to an increase in root mass by 160%”
Claim · model-written summary
Elevated CO2 had no effect on total nutrient uptake (N, P, K, Mg and Ca) in rice.
- Taxon
- riceOryza sativae1
- Treatment
- Elevated CO2e3
- Outcome
- total nutrient uptake (N, P, K, Mg and Ca)e3
- Direction
- no effecte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e3“Elevated CO2 had no effect on total nutrient uptake (N, P, K, Mg and Ca)”
Claim · model-written summary
Elevated CO2 significantly decreased N partitioning to leaf blades of rice.
- Taxon
- riceOryza sativae1
- Organ / stage
- leaf bladese4
- Treatment
- Elevated CO2e2
- Outcome
- N partitioning to leaf bladese4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e2“Elevated CO2 increased biomass at tillering, and this was largely due to an increase in root mass by 160%”
e4“N partitioning to leaf blades was significantly decreased, whereas the N partitioning into the leaf sheaths and roots was increased”
Claim · model-written summary
Elevated CO2 increased N partitioning into the leaf sheaths and roots of rice.
- Taxon
- riceOryza sativae1
- Organ / stage
- leaf sheaths and rootse4
- Treatment
- Elevated CO2e2
- Outcome
- N partitioning into the leaf sheaths and rootse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e2“Elevated CO2 increased biomass at tillering, and this was largely due to an increase in root mass by 160%”
e4“N partitioning to leaf blades was significantly decreased, whereas the N partitioning into the leaf sheaths and roots was increased”
Claim · model-written summary
Elevated CO2 significantly increased nutrient use efficiency of N, P, K and Mg in all organs of rice.
- Taxon
- riceOryza sativae1
- Organ / stage
- all organse5
- Treatment
- elevated CO2e5
- Outcome
- Nutrient use efficiency of N, P, K, and Mge5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e5“Nutrient use efficiency of N, P, K, and Mg in all organs was significantly increased at elevated CO2”
Claim · model-written summary
Elevated CO2 increased grain yield of rice by 27%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e6“grain yield was increased by 27% at elevated CO2 while grain (protein) concentration was decreased by a similar magnitude (28%)”
Claim · model-written summary
Elevated CO2 decreased grain (protein) concentration of rice by 28%.
- Taxon
- riceOryza sativae1
- Organ / stage
- graine6
- Treatment
- elevated CO2e6
- Outcome
- grain (protein) concentratione6
- Direction
- decreasede6
- Value
- 28%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relationship between plant growth, grain yield, nutrient acquisition and partitioning in rice (Oryza sativa L.) under elevated CO2”
e6“grain yield was increased by 27% at elevated CO2 while grain (protein) concentration was decreased by a similar magnitude (28%)”
Claim · model-written summary
Critical nutrient requirements for rice might need to be reassessed with global climate change.
- Taxon
- riceOryza sativae7
- Outcome
- critical nutrient requirementse7
- Qualifier
- might need to be reassessede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“critical nutrient requirements for rice might need to be reassessed with global climate change”
The same questions in other papers
co2 · nutrient: content · Oryza sativa (rice)Positive and negative results
27 papers in the same direction as this paper · 26 in the opposite direction
- positive
- no effect
- negative
50 papers more in this group
See all 54 papers →co2 · growth · Oryza sativa (rice)Positive and negative results
99 papers in the same direction as this paper · 23 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- positive
- positive
120 papers more in this group
See all 124 papers →co2 · yield · Oryza sativa (rice)Positive and negative results
130 papers in the same direction as this paper · 28 in the opposite direction
- positive
- positive
- positive
155 papers more in this group
See all 159 papers →co2 · nutrient: efficiency · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.