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250916s2025 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2025.110502
|2 doi
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|a pubmed25n1568.xml
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|a (DE-627)NLM392556847
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|a (NLM)40946616
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|a (PII)S0981-9428(25)01030-7
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|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Paula-Marinho, Stelamaris de Oliveira
|e verfasserin
|4 aut
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| 245 |
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|a Insights into metabolic profile and redox adjustment during ammonium-induced salt acclimation in sorghum plants
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|c 2025
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 14.09.2025
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Copyright © 2025 Elsevier Masson SAS. All rights reserved.
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|a The role of external nitrogen source (NO3- or NH4+) against salinity-promoted damage on photosynthetic machinery and primary metabolism was investigated in Sorghum bicolor L. Sorghum growth was severely decreased by salinity, but the damage was less pronounced in NH4+-fed plants. Closely, NH4+ nutrition promoted better CO2 uptake rate, associated with higher phosphoenolpyruvate carboxylase activity and maintenance of photosystem II efficiency, as well as better ionic regulation in comparison to NO3- nutrition. In parallel, although NH4+ nutrition induced high basal H2O2 content, minor damage to chloroplast integrity was observed compared to NO3- after saline stress. In non-saline conditions, NH4+-fed plants exhibited more connected network than NO3- nutrition, which led to decreased salt impact in network parameters after salt stress. This may be related to previous changes during acclimatization to NH4+, allowing quick responses to secondary stresses, such as salinity. A metabolite set was significantly modulated by N source under salinity, including amino acids, sugar, and organic acids metabolism that displayed important contribution in response to salt stress. The asparagine amino acid was considered a key metabolite in alleviating NH4+ toxicity. Despite the unchanged antioxidant enzymes system, NH4+ nutrition increased the content of ascorbic acid, which may contribute to redox homeostasis and protect the chloroplasts against oxidative damage under salinity. Therefore, NH4+ nutrition was able to activate mechanisms involved in photosynthetic efficiency and regulation of important metabolites, which attenuated the deleterious effects of salinity on sorghum plants
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|a Journal Article
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|a Chloroplast ultrastructure
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| 650 |
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|a Metabolic profile
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| 650 |
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|a Nitrogen nutrition
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| 650 |
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|a Oxidative stress
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| 700 |
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|a Miranda, Rafael de Souza
|e verfasserin
|4 aut
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| 700 |
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|a Araújo, Gyedre Dos Santos
|e verfasserin
|4 aut
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| 700 |
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|a Pereira, Isabelle Mary Costa
|e verfasserin
|4 aut
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| 700 |
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|a Mesquita, Rosilene Oliveira
|e verfasserin
|4 aut
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| 700 |
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|a Pinheiro, Sergimar Kennedy de Paiva
|e verfasserin
|4 aut
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| 700 |
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|a Miguel, Emílio de Castro
|e verfasserin
|4 aut
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| 700 |
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|a Lopes, Lineker de Sousa
|e verfasserin
|4 aut
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| 700 |
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|a de Carvalho, Humberto Henrique
|e verfasserin
|4 aut
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| 700 |
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|a Gomes-Filho, Enéas
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 229(2025), Pt B vom: 09. Sept., Seite 110502
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnas
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| 773 |
1 |
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|g volume:229
|g year:2025
|g number:Pt B
|g day:09
|g month:09
|g pages:110502
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|u http://dx.doi.org/10.1016/j.plaphy.2025.110502
|3 Volltext
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