Influence of nitrate—ammonium ratio on growth and nutrition of Arabidopsis thaliana

Helali, Sabah M’rah; Nebli, Heifa; Kaddour, Rym; Mahmoudi, Héla; Lachâal, Mokhtar; Ouerghi, Zeineb

doi:10.1007/s11104-010-0445-8

Cited by 66 publications

(30 citation statements)

References 48 publications

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“…This resulted from the membrane damage and cell wall breakage, which increase cell electrolyte leakage (Kochanová et al, 2014). Similar effect was observed in plants of Arabidopsis thaliana (Helali et al, 2010), Brassica oleracea (Barreto et al, 2017), and S. lycopersicum (Barreto et al, 2018) cultivated under high NH4 + concentrations. In contrast, plants under high NH4 + concentration that received Si fertilization had lower electrolyte leakage index than plants without Si (Figure 2b).…”

Section: Plant Physiological Parametersmentioning

confidence: 58%

Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

Júnior

Prado

Campos

et al. 2019

Chil. j. agric. res.

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Ammonium (NH4 +) toxicity in yellow passionfruit (Passiflora edulis Sims f. flavicarpa O. Deg.) may be mitigated by Si application. This study aimed to evaluate the interaction effect of Si and high level of NH4 + on yellow passionfruit seedlings nutrition, physiology, growth, and DM production. Pots were filled with pinus bark and nutrition solution was applied. Treatments were arranged in a completely randomized design, with five replicates, in a 2 × 2 factorial scheme: two ratios of NH4 + and nitrate, NO3 + (40/60%, without high level of NH4 + ; and 75/25%, with high level of NH4 +) at N concentration of 13 mmol N L-1 , in the absence and presence of Si (2.0 mmol L-1). Sixty days after seedling transplant it was evaluated: N, Si, K, Ca and Mg root and shoots accumulation, leaf green color index (GCI), electrolyte leakage index (ELI), intracellular CO2 concentration (Ci), transpiration rate (Tr), stomatal conductance (gs), net photosynthesis rate (Pn), stem diameter, leaf area, root length, N use efficiency (NUE) and root and shoot DM content. Plants cultivated with Si had 19.1% and 16.3% lower Tr and gs, respectively, regardless NH4 + concentration. Moreover, Ci and Pn were 13.2% and 16.4%, respectively, higher in plants that received Si. Plants cultivated under high NH4 + concentrations, with Si application had 17% bigger stem diameter and 15.4% bigger root length than plants without Si application. Si application in yellow passionfruit seedlings cultivated with high level of NH4 + increased accumulation and NUE, root length, root DM, and GCI. In addition, Si application reduced ELI, which resulted in higher stem diameter. These results prove that Si application mitigates NH4 + toxicity in yellow passionfruit seedlings.

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Section: Plant Physiological Parametersmentioning

confidence: 58%

Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

Júnior

Prado

Campos

et al. 2019

Chil. j. agric. res.

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“…Supplying the two forms of nitrogen in a specific ratio will lead to the optimum growth; this finding has been reported in species such as apple (Malus domestica Borkh) [18,19], tomato (Solanum lycopersicum L.) [20,21], and rice (Oryza sativa L.) [22][23][24]. Predominant sources of ammonia N may also negatively affect the whole plant biomass deposition in some species, such as Arabidopsis thaliana [25,26]; while in another study, Arabidopsis plants displayed the potential of stimulating glucosinolate metabolism with ammonium nutrition [27]. An appropriate ammonium-nitrate ratio can enhance plant tolerance to abiotic stresses.…”

Section: Introductionmentioning

confidence: 83%

Appropriate Ammonium-Nitrate Ratio Improves Nutrient Accumulation and Fruit Quality in Pepper (Capsicum annuum L.)

Zhang

Dawuda

et al. 2019

Agronomy

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Ammonium (NH4+) and nitrate (NO3−) are the two forms of inorganic nitrogen essential for physiological and biochemical processes in higher plants, but little is known about how the NH4+:NO3− ratio may affect nitrogen metabolism. This study determined the effect of NH4+:NO3− ratios on plant growth, accumulation, and distribution of nutrient elements, fruit quality, enzyme activity, and relative expression of genes involved in nitrogen (N) metabolism in pepper (Capsicum annuum L.). In a pod experiment, the NH4+:NO3− ratios of 0:100, 12.5:87.5, 25:75, 37.5:62.5, and 50:50 were arranged in a complete randomized design with three replicates. The application of NH4+:NO3− at 25:75 resulted in highest dry matter and N, phosphorus (P), and potassium (K) accumulation. Pepper treated with 25:75 ratio increased root length, surface areas, and root volume and tips. The contents of vitamin C, soluble sugar, soluble protein, total phenols, flavonoids, and capsaicinoids in the fruits were significantly higher with the NH4+:NO3− ratio of 25:75 compared with 0:100 treatment, while lowering nitrate content was found in NH4+:NO3− ratios of 25:75, 37.5:62.5, and 50:50 treatments. Activity of glutamine synthetase (GS), glutamate synthases (GOGAT) enzyme and the levels of relative expression of genes coding these enzymes were superior when the NH4+:NO3− ratio of 25:75 were applied. Therefore, an appropriate ratio of NH4+:NO3− (25:75) in nitrogen application can stimulate root development, promote enzyme activities, and enhance the productivity and fruit quality in pepper.

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“…Studies based in ammonium stress in Arabidopsis have generally described Chl content reduction as a toxicity symptom. 17,18 However, Chl content increase has been also reported. 19 Interestingly, Li et al 20 showed that under mixed nutrition (5 mM NO 3 ¡ supplemented with increasing concentrations of NH 4 C ) Arabidopsis cv.…”

Section: Mild Ammonium Stress Increases Chlorophyll Content In Arabidmentioning

confidence: 99%

Mild ammonium stress increases chlorophyll content inArabidopsis thaliana

Sanchez‐Zabala

González‐Murua

Marino

2015

Plant Signaling & Behavior

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Nitrate (NO3(-)) and ammonium (NH4(+)) are the main forms of nitrogen available in the soil for plants. Excessive NH4(+) accumulation in tissues is toxic for plants and exclusive NH4(+)-based nutrition enhances this effect. Ammonium toxicity syndrome commonly includes growth impairment, ion imbalance and chlorosis among others. In this work, we observed high intraspecific variability in chlorophyll content in 47 Arabidopsis thaliana natural accessions grown under 1 mM NH4(+) or 1 mM NO3(-) as N-source. Interestingly, chlorophyll content increased in every accession upon ammonium nutrition. Moreover, this increase was independent of ammonium tolerance capacity. Thus, chlorosis seems to be an exclusive effect of severe ammonium toxicity while mild ammonium stress induces chlorophyll accumulation.

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Influence of nitrate—ammonium ratio on growth and nutrition of Arabidopsis thaliana

Cited by 66 publications

References 48 publications

Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

Appropriate Ammonium-Nitrate Ratio Improves Nutrient Accumulation and Fruit Quality in Pepper (Capsicum annuum L.)

Mild ammonium stress increases chlorophyll content inArabidopsis thaliana

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