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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2022.111277
|2 doi
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|a pubmed25n1138.xml
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|a (DE-627)NLM341657379
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|a (NLM)35643605
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|a (PII)S0168-9452(22)00101-7
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Jauregui, Ivan
|e verfasserin
|4 aut
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|a Could ammonium nutrition increase plant C-sink strength under elevated CO2 conditions?
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 03.06.2022
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|a Date Revised 03.06.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2022 Elsevier B.V. All rights reserved.
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|a Atmospheric carbon dioxide (CO2) is increasing, and this affects plant photosynthesis and biomass production. Under elevated CO2 conditions (eCO2), plants need to cope with an unbalanced carbon-to-nitrogen ratio (C/N) due to a limited C sink strength and/or the reported constrains in leaf N. Here, we present a physiological and metabolic analysis of ammonium (NH4+)-tolerant pea plants (Pisum sativum L., cv. snap pea) grown hydroponically with moderate or high NH4+ concentrations (2.5 or 10 mM), and under two atmospheric CO2 concentrations (400 and 800 ppm). We found that the photosynthetic efficiency of the NH4+ tolerant pea plants remain intact under eCO2 thanks to the capacity of the plants to maintain the foliar N status (N content and total soluble proteins), and the higher C-skeleton requirements for NH4+ assimilation. The capacity of pea plants grown at 800 ppm to promote the C allocation into mobile pools of sugar (mainly sucrose and glucose) instead of starch contributed to balancing plant C/N. Our results also support previous observations: plants exposed to eCO2 and NH4+ nutrition can increase of stomatal conductance. Considering the C and N source-sink balance of our plants, we call for exploring a novel trait, combining NH4+ tolerant plants with a proper NH4+ nutrition management, as a way for a better exploitation of eCO2 in C3 crops
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|a Journal Article
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|a Ammonium nutrition
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|a Ammonium toxicity
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|a C status
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|a CO(2)
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|a Roots
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|a Ammonium Compounds
|2 NLM
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| 650 |
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|a Carbon Dioxide
|2 NLM
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| 650 |
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7 |
|a 142M471B3J
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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7 |
|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Rivero-Marcos, Mikel
|e verfasserin
|4 aut
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1 |
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|a Aranjuelo, Iker
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Aparicio-Tejo, Pedro M
|e verfasserin
|4 aut
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| 700 |
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|a Lasa, Berta
|e verfasserin
|4 aut
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| 700 |
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|a Ariz, Idoia
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant science : an international journal of experimental plant biology
|d 1985
|g 320(2022) vom: 28. Juli, Seite 111277
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnas
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| 773 |
1 |
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|g volume:320
|g year:2022
|g day:28
|g month:07
|g pages:111277
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|u http://dx.doi.org/10.1016/j.plantsci.2022.111277
|3 Volltext
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