Abstract
We investigated the interaction of elevated (CO2) on partitioning of carbohydrate from shoot to root under phosphorus (P) stress. Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396) to study the interactive effects of P (5 µM and 500 µM) and (CO2) (400 and 700 µL L-1) was taken. In P-starved plants higher growth was observed at elevated (CO2). Under nutrient deficiency and/or elevated (CO2) higher root-to-shoot ratio was observed and increasing nutrient uptake by providing more root surface. P levels or (CO2) did not cause significant changes to the leaf soluble sugar content, whereas starch concentration increased at low P, irrespective of the CO2 treatment. The chla and total chlorophyll varied significantly only due to nutrient treatment while chlb was also influenced by (CO2). The root protein averaged over nutrient treatment increased by 16% in PDW-233 whereas it reduced by 30% in PBW-396 as compared to ambient (CO2).PDW-233 recorded higher shoot and root protein averaged over (CO2) and nutrient treatments. The root dry weight was almost doubled in both varieties at e(CO2) while the total biomass accumulation increased by 54 to 70%. PBW-396 responded to e(CO2) in terms of biomass accumulation under low P compared to PDW-233the sugar concentration was more than doubled in PBW-396 as compared to PDW-233. The increase in reducing, non-reducing and total sugars at low P was 40, 122 and 93%, respectively as compared to control. This experiment shows that extra CO2 help to ameliorate the effect of P deficiency. The severe effects of P deficiency on growth and development of wheat plant was mitigated to some extent by elevated (CO2).
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Claims 17
Claim · model-written summary
In P-starved wheat plants, growth was higher at elevated CO2.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- elevated (CO2)e1
- Outcome
- growthe1
- Direction
- highere1
- Qualifier
- In P-starved plantse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“In P-starved plants higher growth was observed at elevated (CO2)”
Claim · model-written summary
Under nutrient deficiency and/or elevated CO2, root-to-shoot ratio was higher in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- nutrient deficiency and/or elevated (CO2)e2
- Outcome
- root-to-shoot ratioe2
- Direction
- highere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e2“Under nutrient deficiency and/or elevated (CO2) higher root-to-shoot ratio was observed”
Claim · model-written summary
Phosphorus levels or CO2 did not significantly change leaf soluble sugar content of wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- P levels or (CO2)e3
- Outcome
- leaf soluble sugar contente3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e3“P levels or (CO2) did not cause significant changes to the leaf soluble sugar content”
Claim · model-written summary
Starch concentration in wheat increased at low P, irrespective of CO2 treatment.
- Taxon
- wheatTriticum aestivume0
- Treatment
- low Pe4
- Outcome
- starch concentratione4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e4“whereas starch concentration increased at low P, irrespective of the CO2 treatment”
Claim · model-written summary
Chlorophyll a and total chlorophyll of wheat varied significantly only with nutrient treatment.
- Taxon
- wheatTriticum aestivume0
- Treatment
- nutrient treatmente5
- Outcome
- chla and total chlorophylle5
- Direction
- variede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e5“The chla and total chlorophyll varied significantly only due to nutrient treatment while chlb was also influenced by (CO2)”
Claim · model-written summary
Chlorophyll b of wheat was influenced by CO2.
- Taxon
- wheatTriticum aestivume0
- Treatment
- (CO2)e5
- Outcome
- chlbe5
- Direction
- influencede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e5“The chla and total chlorophyll varied significantly only due to nutrient treatment while chlb was also influenced by (CO2)”
Claim · model-written summary
Root protein of PDW-233 increased by 16% at elevated CO2 compared with ambient CO2.
- Taxon
- wheatTriticum aestivume0
- Material
- PDW-233e6
- Outcome
- root proteine6
- Direction
- increasede6
- Value
- 16%e6
- Comparator
- ambient (CO2)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e6“The root protein averaged over nutrient treatment increased by 16% in PDW-233 whereas it reduced by 30% in PBW-396 as compared to ambient (CO2)”
Claim · model-written summary
Root protein of PBW-396 decreased by 30% compared with ambient CO2.
- Taxon
- wheatTriticum aestivume0
- Material
- PBW-396e6
- Outcome
- root proteine6
- Direction
- reducede6
- Value
- 30%e6
- Comparator
- ambient (CO2)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e6“The root protein averaged over nutrient treatment increased by 16% in PDW-233 whereas it reduced by 30% in PBW-396 as compared to ambient (CO2)”
Claim · model-written summary
PDW-233 recorded higher shoot and root protein averaged over CO2 and nutrient treatments.
- Taxon
- wheatTriticum aestivume0
- Material
- PDW-233e7
- Outcome
- shoot and root proteine7
- Direction
- highere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e7“PDW-233 recorded higher shoot and root protein averaged over (CO2) and nutrient treatments”
Claim · model-written summary
Root dry weight of wheat almost doubled in both varieties at elevated CO2.
- Taxon
- wheatTriticum aestivume0
- Treatment
- e(CO2)e1
- Outcome
- root dry weighte1
- Direction
- almost doublede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“The root dry weight was almost doubled in both varieties at e(CO2)”
Claim · model-written summary
Total biomass accumulation of wheat increased by 54 to 70% at elevated CO2.
- Taxon
- wheatTriticum aestivume0
- Treatment
- e(CO2)e1
- Outcome
- total biomass accumulatione2
- Direction
- increasede2
- Value
- 54 to 70%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“The root dry weight was almost doubled in both varieties at e(CO2)”
e2“while the total biomass accumulation increased by 54 to 70%”
Claim · model-written summary
PBW-396 responded to elevated CO2 in biomass accumulation under low P compared with PDW-233.
- Taxon
- wheatTriticum aestivume0
- Material
- PBW-396e1
- Treatment
- e(CO2)e1
- Outcome
- biomass accumulatione1
- Direction
- respondede1
- Comparator
- PDW-233e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“PBW-396 responded to e(CO2) in terms of biomass accumulation under low P compared to PDW-233”
Claim · model-written summary
Sugar concentration of PBW-396 was more than doubled compared with PDW-233.
- Taxon
- wheatTriticum aestivume0
- Material
- PBW-396e1
- Outcome
- sugar concentratione1
- Direction
- more than doublede1
- Comparator
- PDW-233e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“the sugar concentration was more than doubled in PBW-396 as compared to PDW-233”
Claim · model-written summary
Reducing sugars increased by 40% at low P compared with control.
- Taxon
- wheatTriticum aestivume0
- Treatment
- low Pe1
- Outcome
- reducinge1
- Direction
- increasee1
- Value
- 40e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“The increase in reducing, non-reducing and total sugars at low P was 40, 122 and 93%, respectively as compared to control”
Claim · model-written summary
Non-reducing sugars increased by 122% at low P compared with control.
- Taxon
- wheatTriticum aestivume0
- Treatment
- low Pe1
- Outcome
- non-reducinge1
- Direction
- increasee1
- Value
- 122e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“The increase in reducing, non-reducing and total sugars at low P was 40, 122 and 93%, respectively as compared to control”
Claim · model-written summary
Total sugars increased by 93% at low P compared with control.
- Taxon
- wheatTriticum aestivume0
- Treatment
- low Pe1
- Outcome
- total sugarse1
- Direction
- increasee1
- Value
- 93%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“The increase in reducing, non-reducing and total sugars at low P was 40, 122 and 93%, respectively as compared to control”
Claim · model-written summary
Extra CO2 helps to ameliorate the effect of P deficiency on wheat (author interpretation).
- Taxon
- wheatTriticum aestivume0
- Treatment
- extra CO2e1
- Outcome
- effect of P deficiencye1
- Direction
- amelioratee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiment was conducted on wheat varieties (Triticum durum (PDW-233) and Triticum aestivum (PBW-396)”
e1“extra CO2 help to ameliorate the effect of P deficiency”
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