Abstract
Growth under elevated CO2 (EC) conditions inhibits nitrate (NO3-) assimilation in crop plants, hence ammonium (NH4+) nutrition is beneficial compared to NO3– nutrition under EC conditions. In the present study, an attempt was made to compare the suitability NH4 + vs mixed NH4 + + NO3 – nutrition in wheat (Triticum aestivum L.). Wheat seedlings supplied with NH4+ alone or with both NH4+ + NO3– as nitrogen (N) source and grown under ambient (380 μl/l, AC) or elevated (600±50 μl/l, EC) CO2 conditions were analyzed for growth and biochemical parameters. Plants receiving only NH4+ as N source showed significant reduction in growth parameters. The negative effects of NH4+ nutrition were manifested in form of reduced root length, root surface area and thinner leaves under EC. Negative effects of NH4+ nutrition were ameliorated in plants receiving mixed NH4 + + NO3 – nutrition. Supplementing NO3 – -N with NH4+ -N led to the enhancement of various morphological and biochemical parameters in EC grown plants. Activity and gene expression of the enzymes, nitrate reductase and glutamine synthetase was significantly higher in plants supplied with both NH4+ + NO3– ions and grown in EC, as compared to plants grown in AC, resulting in lesser reduction in N content of the EC grown plants. Our study indicates that mixed NH4+ + NO3– nutrition will be more suitable for wheat cultivation under high CO2 conditions in future.
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Claims 12
Claim · model-written summary
Ammonium alone significantly reduced wheat growth parameters.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- only NH4+ as N sourcee0
- Outcome
- growth parameterse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants receiving only NH4+ as N source showed significant reduction in growth parameters.”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Ammonium nutrition reduced wheat root length under elevated CO2.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- NH4+ nutritione0
- Outcome
- root lengthe0
- Direction
- reducede0
- Qualifier
- under ECe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The negative effects of NH4+ nutrition were manifested in form of reduced root length, root surface area and thinner leaves under EC.”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Ammonium nutrition reduced wheat root surface area under elevated CO2.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- NH4+ nutritione0
- Outcome
- root surface areae0
- Direction
- reducede0
- Qualifier
- under ECe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The negative effects of NH4+ nutrition were manifested in form of reduced root length, root surface area and thinner leaves under EC.”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Ammonium nutrition produced thinner wheat leaves under elevated CO2.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- NH4+ nutritione0
- Outcome
- leavese0
- Direction
- thinnere0
- Qualifier
- under ECe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The negative effects of NH4+ nutrition were manifested in form of reduced root length, root surface area and thinner leaves under EC.”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Mixed ammonium and nitrate nutrition ameliorated negative effects of ammonium nutrition.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- mixed NH4 + + NO3 – nutritione0
- Outcome
- Negative effectse0
- Direction
- amelioratede0
- Comparator
- NH4+ nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Negative effects of NH4+ nutrition were ameliorated in plants receiving mixed NH4 + + NO3 – nutrition.”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Adding nitrate to ammonium enhanced morphological and biochemical parameters in elevated CO2 wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Supplementing NO3 – -N with NH4+ -Ne0
- Outcome
- morphological and biochemical parameterse0
- Direction
- enhancemente0
- Qualifier
- EC grown plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplementing NO3 – -N with NH4+ -N led to the enhancement of various morphological and biochemical parameters in EC grown plants.”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Nitrate reductase activity was significantly higher under elevated than ambient CO2 with mixed nitrogen nutrition.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- both NH4+ + NO3– ions and grown in ECe0
- Gene
- nitrate reductasee0
- Outcome
- Activitye0
- Direction
- highere0
- Comparator
- plants grown in ACe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activity and gene expression of the enzymes, nitrate reductase and glutamine synthetase was significantly higher in plants supplied with both NH4+ + NO3– ions and grown in EC, as compared to plants grown in AC”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Glutamine synthetase activity was significantly higher under elevated than ambient CO2 with mixed nitrogen nutrition.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- both NH4+ + NO3– ions and grown in ECe0
- Gene
- glutamine synthetasee0
- Outcome
- Activitye0
- Direction
- highere0
- Comparator
- plants grown in ACe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activity and gene expression of the enzymes, nitrate reductase and glutamine synthetase was significantly higher in plants supplied with both NH4+ + NO3– ions and grown in EC, as compared to plants grown in AC”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Nitrate reductase expression was significantly higher under elevated than ambient CO2 with mixed nitrogen nutrition.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- both NH4+ + NO3– ions and grown in ECe0
- Gene
- nitrate reductasee0
- Outcome
- gene expressione0
- Direction
- highere0
- Comparator
- plants grown in ACe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activity and gene expression of the enzymes, nitrate reductase and glutamine synthetase was significantly higher in plants supplied with both NH4+ + NO3– ions and grown in EC, as compared to plants grown in AC”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Glutamine synthetase expression was significantly higher under elevated than ambient CO2 with mixed nitrogen nutrition.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- both NH4+ + NO3– ions and grown in ECe0
- Gene
- glutamine synthetasee0
- Outcome
- gene expressione0
- Direction
- highere0
- Comparator
- plants grown in ACe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activity and gene expression of the enzymes, nitrate reductase and glutamine synthetase was significantly higher in plants supplied with both NH4+ + NO3– ions and grown in EC, as compared to plants grown in AC”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Mixed nitrogen nutrition lessened the reduction in wheat nitrogen content under elevated CO2.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ECe0
- Outcome
- N contente0
- Direction
- lesser reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in lesser reduction in N content of the EC grown plants”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
The authors recommend mixed ammonium and nitrate nutrition for wheat cultivation under future high CO2.
- Taxon
- wheatTriticum aestivume0
- Outcome
- mixed NH4+ + NO3– nutrition will be more suitablee0
- Qualifier
- under high CO2 conditions in futuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mixed NH4+ + NO3– nutrition will be more suitable for wheat cultivation under high CO2 conditions in future”
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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.