Nitrogen metabolism in plants under low oxygen stress

Limami, Anis M.; Diab, Houssein; Lothier, Jérémy

doi:10.1007/s00425-013-2015-9

Cited by 80 publications

(47 citation statements)

References 79 publications

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“…GS activity is significantly positively related to protein hydrolysis and the ability to adapt to abiotic stress (Dwivedi et al, 2012). Our study showed that GS and GOGAT activities declined significantly after waterlogging, leading to a significant drop in the activities of N metabolism enzymes and sugar metabolism enzymes in maize leaves, affecting the synthesis and transformation of amino acids (Limami et al, 2014), and ultimately inhibiting N metabolism, and disrupting N absorption and translation; thus, physiological processes associated with N became limited, resulting in a significant yield reduction of maize. GDH plays an important role in protein synthesis in the late grain-filling stage, and participated in the resynthesis of NH 4 + under environmental stresses.…”

Section: Discussionmentioning

confidence: 88%

“…Additionally, nitrogen harvest index (NHI) reflects N distribution in grain and vegetative organs at R6 stage (Jin et al, 2012). However, waterlogging decreases significantly grain N accumulation, resulting in the reduction of the NHI (Limami et al, 2014). Our study also showed waterlogging significantly decreased the NHI in maize, indicating that waterlogging significantly decreased grain N accumulation, and affected N use efficiency in maize.…”

Section: Discussionmentioning

confidence: 99%

“…N metabolism has been shown to contribute cellular acclimation to low oxygen stress in plants (Bailey-Serres et al, 2012). N deficiency may be induced by the low redox potential in waterlogged soils that promotes denitrification of nitrate (NO 3 - ) (Limami et al, 2014). Nitrate reductase (NR), glutamine (GS), glutamate synthase (GOGAT), and glutamate dehydrogenase (GDH) are key enzymes in N metabolism, whose activities have been used as representative biochemical markers to evaluate N status.…”

Section: Introductionmentioning

confidence: 99%

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Responses of Nitrogen Metabolism, Uptake and Translocation of Maize to Waterlogging at Different Growth Stages

et al. 2017

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We performed a field experiment using the maize hybrids DengHai605 (DH605) and ZhengDan958 (ZD958) to study nitrogen uptake and translocation, key enzyme activities of nitrogen metabolism in response to waterlogging at the third leaf stage (V3), the sixth leaf stage (V6), and the 10th day after the tasseling stage (10VT). Results showed that N accumulation amount was significantly reduced after waterlogging, most greatly in the V3 waterlogging treatment (V3-W), with decreases of 41 and 37% in DH605 and ZD958, respectively. N accumulation in each organ and N allocation proportions in grains decreased significantly after waterlogging, whereas N allocation proportions increased in stem and leaf. The reduction in stem and leaf N accumulation after waterlogging was mainly caused by a decrease in dry matter accumulation, and a reduction in N translocation from stems and leaves to grains after waterlogging. Additionally, waterlogging decreased the activity of key N metabolism enzymes (nitrate reductase, glutamine, glutamate synthase, and glutamate dehydrogenase), and the most significant reduction in V3-W with a decrease of 59, 46, 35, and 26% for DH605, and 60, 53, 31, and 25 for ZD958, respectively. Waterlogging disrupted N metabolism, hindered N absorption and transportation, and decreased maize yield.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Responses of Nitrogen Metabolism, Uptake and Translocation of Maize to Waterlogging at Different Growth Stages

et al. 2017

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“…It is shown that nitrate uptake by tomato plants increased under prolonged periods of root hypoxia, which basically limits the effect of diminishing O 2 content (Horchani et al, 2010;Morard et al, 2004). This is probably due to the nitrate reductase (NR) activity which promotes NAD + generation as species tolerant to oxygen deprivation exhibit higher NR activity than sensitive ones (Bailey-Serres & Voesenek, 2008;Limami et al, 2014). It has been shown that the absence or the decrease in NR activity enhances the symptoms of hypoxia (Stoimenova et al, 2003).…”

Section: Morphological and Anatomical Alterationsmentioning

confidence: 96%

Waterlogging and submergence stress: affects and acclimation

Phukan

Mishra

Shukla

2015

Critical Reviews in Biotechnology

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Submergence, whether partial or complete, imparts some serious consequences on plants grown in flood prone ecosystems. Some plants can endure these conditions by embracing various survival strategies, including morphological adaptations and physiological adjustments. This review summarizes recent progress made in understanding of the stress and the acclimation responses of plants under waterlogged or submerged conditions. Waterlogging and submergence are often associated with hypoxia development, which may trigger various morphological traits and cellular acclimation responses. Ethylene, abscisic acid, gibberellic acid and other hormones play a crucial role in the survival process which is controlled genetically. Effects at the cellular level, including ATP management, starch metabolism, elemental toxicity, role of transporters and redox status have been explained. Transcriptional and hormonal interplay during this stress may provide some key aspects in understanding waterlogging and submergence tolerance. The level and degree of tolerance may vary depending on species or climatic variations which need to be studied for a proper understanding of waterlogging stress at the global level. The exploration of regulatory pathways and interplay in model organisms such as Arabidopsis and rice would provide valuable resources for improvement of economically and agriculturally important plants in waterlogging affected areas.

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“…Second, despite the production of oxygen by photosynthesis, the low‐O 2 atmosphere triggers a hypoxic response even in the short‐term (here, ‘short‐term’ means a time frame of 1 to 2 h, that is, the typical time required to carry out a photosynthetic response curve). From a metabolic perspective, hypoxia is associated with a reorganization of glycolysis, TCAP and nitrogen assimilation, with considerable accumulation of biomarkers metabolites such as the nitrogenous compounds alanine, β‐alanine, glutamate or γ‐aminobutyrate (Limami et al ., ). Such changes are associated with an increase in nitrogen demand (and thus nitrate assimilation using electrons of the chloroplastic electron chain) as shown by the decrease in phosphorylation of nitrate reductase under hypoxia (Lothier et al ., ).…”

Section: Specific Effects Of Low Oxygenmentioning

confidence: 97%

Net photosynthetic CO₂ assimilation: more than just CO₂ and O₂ reduction cycles

Tcherkez

Limami

2019

New Phytologist

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Summary Net photosynthetic assimilation in C3 plants is mostly viewed as a simple balance between CO2 fixation by Rubisco‐catalyzed carboxylation and CO2 production by photorespiration (and to a lower extent, by day respiration) that can be easily manipulated during gas exchange experiments using the CO2 : O2 ratio of the environment. However, it now becomes clear that it is not so simple, because the photosynthetic response to gaseous conditions involves ‘ancillary’ metabolisms, even in the short‐term. That is, carbon and nitrogen utilization by pathways other than the Calvin cycle and the photorespiratory cycle, as well as rapid signaling events, can influence the observed rate of net photosynthesis. The potential impact of such ancillary metabolisms is assessed as well as how it must be taken into account to avoid misinterpretation of photosynthetic CO2 response curves or low O2 effects in C3 leaves.

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Nitrogen metabolism in plants under low oxygen stress

Cited by 80 publications

References 79 publications

Responses of Nitrogen Metabolism, Uptake and Translocation of Maize to Waterlogging at Different Growth Stages

Responses of Nitrogen Metabolism, Uptake and Translocation of Maize to Waterlogging at Different Growth Stages

Waterlogging and submergence stress: affects and acclimation

Net photosynthetic CO₂ assimilation: more than just CO₂ and O₂ reduction cycles

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Nitrogen metabolism in plants under low oxygen stress

Cited by 80 publications

References 79 publications

Responses of Nitrogen Metabolism, Uptake and Translocation of Maize to Waterlogging at Different Growth Stages

Responses of Nitrogen Metabolism, Uptake and Translocation of Maize to Waterlogging at Different Growth Stages

Waterlogging and submergence stress: affects and acclimation

Net photosynthetic CO2 assimilation: more than just CO2 and O2 reduction cycles

Contact Info

Product

Resources

About

Net photosynthetic CO₂ assimilation: more than just CO₂ and O₂ reduction cycles