Regulatory mechanisms of nitrogen (N) on cadmium (Cd) uptake and accumulation in plants: A review

Yang, Yongjie; Xiong, Jie; Tao, Longxing; Cao, Zhenzhen; Tang, Wei; Zhang, Jianping; Yu, Xiaoyue; Fu, Guanfu; Zhang, Xiufu; Lu, Yongliang

doi:10.1016/j.scitotenv.2019.135186

Cited by 110 publications

(42 citation statements)

References 90 publications

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“…In general, N-mediated enhancement of biomass or Cd concentration or both contribute to enhanced Cd accumulation in plants. Based on previously published data, the review of Yang et al (2020) found that an increase in N (especially nitrate) promoted Cd accumulation in plants. Our results confirm this conclusion, and we also found that there was an optimum nitrate level, where the low and high N applications were not appropriate for optimal Cd phytoextraction (Fig.…”

Section: Effects Of Nitrate On CD Accumulation In Sweet Sorghummentioning

confidence: 99%

“…Nitrogen promotes Cd concentration into plants (Yang et al 2020), but Cd tolerance determines the feasibility of N supplementation for improving Cd phytoextraction. Compartmentation of Cd into cell walls or vacuoles, which have lower metabolic activity, is important for detoxifying Cd in plants (Wu et al 2013).…”

Section: Effects Of Nitrate On CD Translocation and Subcellular Distrmentioning

confidence: 99%

“…Nitrogen is generally taken up by plants in the forms of ammonium (NH 4 + ) and nitrate (NO 3 − ) (Glass et al 2002). Previous studies have shown that N compounds are closely correlated with Cd accumulation in plants (Xie et al 2009;Wu et al 2018c;Yang et al 2020). However, it has been reported that ammonium facilitates Cd accumulation in sunflower (Zaccheo et al 2006), poplar (Populus euramericana) (Qasim et al 2015), rape (Brassica napus) (Zeng et al 2020) and S. nigrum L. (Yang et al 2019), whereas nitrate accelerates Cd accumulation in rice (Oryza sativa L.) (Wu et al 2018c;Wu et al 2020), N. caerulescens L. (Xie et al 2009) and tomato (Solanum lycopersicum) (Bing et al 2012), although the underlying mechanism is elusive.…”

Section: Introductionmentioning

confidence: 99%

“…Xie et al (2009) showed that irrespective of pH value, nitrate-treated plants of N. caerulescens L had higher Cd accumulation than those treated with ammonium. Recently, a review from Yang et al (2020) found that regardless of N form, Cd uptake, translocation and accumulation in plants increases with an increase in amount of N applied, and that nitrate is superior to any other form of N.…”

Section: Introductionmentioning

confidence: 99%

“…2018c; Yang et al . 2020). However, it has been reported that ammonium facilitates Cd accumulation in sunflower (Zaccheo et al .…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of cadmium accumulation in sweet sorghum as affected by nitrate

et al. 2020

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• The Cadmium (Cd)-polluted soils are is an increasing concern worldwide. Phytoextraction of Cd pollutants by high biomass plants, such as sweet sorghum, is considered an environmentally-friendly, cost-effective and sustainable strategy for remediating this problem. Nitrogen (N) is a macronutrient essential for plant growth, development and stress resistance. Nevertheless, how nitrate, as an important form of N, affects Cd uptake, translocation and accumulation in sweet sorghum is still unclear. • In the present study, a series of nitrate levels (N1, 0.5 mM; N2, 2 mM; N3, 4 mM; N4, 8 mM and N5, 16 mM) with or without added 5 μM CdCl 2 treatment in sweet sorghum was investigated hydroponically. • The results indicate that Cd accumulation in the aboveground parts of sweet sorghum was enhanced by optimum nitrate supply, resulting from both increased dry weight and Cd concentration. Although root-to-shoot Cd translocation was not enhanced by increased nitrate, some Cd was transferred from cell walls to vacuoles in leaves. Intriguingly, expression levels of Cd uptake and transport genes, SbNramp1, SbNram-p5 and SbHMA3, were not closely related to increased Cd as affected by nitrate supply. The expression of SbNRT1.1B in relation to nitrate transport showed an inverted 'U' shape with increasing nitrate levels under Cd stress, which was in agreement with trends in Cd concentration changes in aboveground tissues. • Based on the aforementioned results, nitrate might regulate Cd uptake and accumulation through expression of SbNRT1.1B rather than SbNramp1, SbNramp5 or SbHMA3, the well-documented genes related to Cd uptake and transport in sweet sorghum.

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Section: Effects Of Nitrate On CD Accumulation In Sweet Sorghummentioning

confidence: 99%

Section: Effects Of Nitrate On CD Translocation and Subcellular Distrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…2018c; Yang et al . 2020). However, it has been reported that ammonium facilitates Cd accumulation in sunflower (Zaccheo et al .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhancement of cadmium accumulation in sweet sorghum as affected by nitrate

et al. 2020

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Nutrient Management and Stress Tolerance in Crops

Abbas¹,

Tanwir²,

Amna³

et al. 2023

Plant Ionomics

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Cadmium Accumulation in a Tropicalized Lettuce Variety Under Overfertilization Simulation

Nunes

Kiyota

Andrade

2022

CLEAN Soil Air Water

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Cadmium (Cd) can accumulate in vegetables and enter the food chain. The production of vegetables usually uses excessive amounts of fertilizers which bring environmental and health damages. The authors investigate the relationship between fertilization with nitrogen (N), phosphorus (P), and potassium (K) and the accumulation of Cd and nitrate in lettuce of the tropicalized variety "Gloriosa." The experiment is under greenhouse conditions in a 2×2 factorial design, with the addition or not of 10 mg kg −1 Cd to the soil, and the use of one and three times the recommended rate of N, P, and K for lettuce crop. The higher fertilization rate is related to the increase of Cd in the shoots. Gloriosa lettuce shows high Cd-accumulation capacity, especially in the shoots, evidencing great Cd-translocation. Fresh leaves reach up to 8 mg kg −1 Cd, higher than permissible limits, but high Cd-tolerance and no visual symptoms of toxicity or reduction in biomass production. In plants grown with three times the recommended rates of N, nitrate concentrations are within the permissible limits for leafy vegetables. To avoid Cd-accumulation, besides monitoring soil Cd, it would be necessary to establish safe rates of fertilization for the cultivation of tropicalized lettuce varieties.

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Regulatory mechanisms of nitrogen (N) on cadmium (Cd) uptake and accumulation in plants: A review

Cited by 110 publications

References 90 publications

Enhancement of cadmium accumulation in sweet sorghum as affected by nitrate

Enhancement of cadmium accumulation in sweet sorghum as affected by nitrate

Nutrient Management and Stress Tolerance in Crops

Cadmium Accumulation in a Tropicalized Lettuce Variety Under Overfertilization Simulation

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