Effect of different nitrogenous nutrients on the cadmium hyperaccumulation efficiency of Rorippa globosa (Turcz.) Thell.

Wei, Shuhe; Ji, Dandan; Twardowską, Irena; Li, Yunmeng; Zhu, Junying

doi:10.1007/s11356-014-3448-9

Cited by 40 publications

(15 citation statements)

References 25 publications

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“…Concomitantly, the Cd accumulation of those plant parts follows their yields increment as well (Figure 1). This agrees with the findings of [12,[15][16][17][18] who observed greater yields with increased N rates and consequently greater Cd uptake in the studied plants. In fact, N is the most limiting nutrient as far as yield increase is concerned and, in the case of our study, the same evaluations carried out for P and K showed a positive correlation with ryegrass yields but no relationship was found between P and K with Cd accumulation in any plant part (data not shown).…”

Section: Ryegrass Production and Cadmium × Nitrogen Accumulation Relationshipsupporting

confidence: 93%

“…Nitrogen is the most important essential nutrient for plants, and N application is the biggest contributor to biomass production [12]. Although some studies suggested that Cd concentration in plants decreased as their biomass increased by N application [13,14], other works concluded that N fertilizer not only improved plants' biomass but also increased their Cd concentration [12,[15][16][17]. In an experiment conducted by Symanowicz et al [18], N fertilization significantly contributed to increase Cd accumulation in the aboveground portion (shoots) of eastern galega.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Biochar Derived Nitrogen on Cadmium Removal by Ryegrass in a Contaminated Soil

Antonângelo

Zhang

2021

Environments

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Little is known about the effect of nitrogen (N) application via biochar on the removal of trace elements by crops, and the effects with chemical fertilizers are inconsistent. We determined, from a previous study, the influence of increased N addition via biochars produced from switchgrass (SGB) and poultry litter (PLB) on cadmium (Cd) removal by ryegrass. The biochar rates of 0, 0.5, 1, 2, and 4% w/w were applied to a Cd-contaminated soil before seeding in a potting experiment with a complete randomized block design (CRBD). Ryegrass yield and N and Cd removed by harvest were strongly related (p < 0.05). The ryegrass yields increased up to 1% of PLB, and Cd removal was also the highest at 1% of PLB. The biomass of ryegrass roots increased with Cd accumulation (p < 0.05). Overall, the Cd transfer factor (TF) from ryegrass roots to shoots increased when up to 206 ± 38 kg N ha−1 was removed in ryegrass shoots (p < 0.0001). The application of PLB up to 1% might be a viable option since it is a practical rate for handling operations requiring less volume of material than SGB. Additionally, the Cd concentration in the aboveground forage remained acceptable for grazing cattle. Future studies are encouraged to evaluate different sources of N fertilizers affecting Cd uptake on cash crops.

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Section: Ryegrass Production and Cadmium × Nitrogen Accumulation Relationshipsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Influence of Biochar Derived Nitrogen on Cadmium Removal by Ryegrass in a Contaminated Soil

Antonângelo

Zhang

2021

Environments

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“…Therefore, abundant freely available mineral N in the soil did not stimulate microbes to produce more NAG, and then resulted in no significant correlation between NAG activity and NH 4 + -N and NO 3 - -N concentrations. As a component part of available N, NH 4 + -N and NO 3 - -N tend to encourage more root growth [ 53 ]. Some studies suggested that root biomass significantly positively correlated with soil respiration [ 21 , 37 ].…”

Section: Discussionmentioning

confidence: 99%

Seasonal Patterns of Soil Respiration and Related Soil Biochemical Properties under Nitrogen Addition in Winter Wheat Field

Liang

Houssou

et al. 2015

PLoS ONE

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Understanding the changes of soil respiration under increasing N fertilizer in cropland ecosystems is crucial to accurately predicting global warming. This study explored seasonal variations of soil respiration and its controlling biochemical properties under a gradient of Nitrogen addition during two consecutive winter wheat growing seasons (2013–2015). N was applied at four different levels: 0, 120, 180 and 240 kg N ha-1 year-1 (denoted as N0, N12, N18 and N24, respectively). Soil respiration exhibited significant seasonal variation and was significantly affected by soil temperature with Q10 ranging from 2.04 to 2.46 and from 1.49 to 1.53 during 2013–2014 and 2014–2015 winter wheat growing season, respectively. Soil moisture had no significant effect on soil respiration during 2013–2014 winter wheat growing season but showed a significant and negative correlation with soil respiration during 2014–2015 winter wheat growing season. Soil respiration under N24 treatment was significantly higher than N0 treatment. Averaged over the two growing seasons, N12, N18 and N24 significantly increased soil respiration by 13.4, 16.4 and 25.4% compared with N0, respectively. N addition also significantly increased easily extractable glomalin-related soil protein (EEG), soil organic carbon (SOC), total N, ammonium N and nitrate N contents. In addition, soil respiration was significantly and positively correlated with β-glucosidase activity, EEG, SOC, total N, ammonium N and nitrate N contents. The results indicated that high N fertilization improved soil chemical properties, but significantly increased soil respiration.

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“…Likewise, organic matter, nitrogen and extractable P contents were measured using a method described by Lu (Lu, 2000). The pH value was determined by a pH meter (PHS-3B) and the soil to water ratio was 1:2.5 (v/w) (Wei et al, 2015). MDA (malondialdehyde) concentration was determined as described by Zhu et al (Zhu et al, 2019).…”

Section: Sample Determinationmentioning

confidence: 99%

Enhanced Cd Phytoextraction by Solanum Nigrum L From Contaminated Soils Combined With the Application of N Fertilizers and Double Harvests

Yang¹,

Dai²,

Skuza³

et al. 2021

Preprint

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It is very important to increase phytoremediation efficiency in practice in suitable climatic conditions for plant growth by multiple harvests. Solanum nigrum L. is a Cd hyperaccumulator. In present experiment, after applying different types of N fertilizers (NH4HCO3, NH4Cl, (NH4)2SO4, CH4N2O), root and shoot biomasses and Cd phytoextraction efficiency of S. nigrum effectively improved (P < 0.05), whereas shoot biomasses of S. nigrum harvested at the first florescence stage plus the amounts at the second florescence stage were higher than those at the maturation stage, which indicated that S. nigrum Cd phyto-accumulation efficiency was higher in double harvests at florescence stages compared to a single harvest due to the lack of a clear change in Cd concentration (P < 0.05). The pH value and extractable Cd contents showed no changes, regardless whether N fertilizer was added or not at different growth stages. In addition, after N fertilizer supply, H2O2 and MDA contents in S. nigrum in vivo were lower compared to CK; Similarly, the concentration of proline was decreased as well (P < 0.05). As one of the antioxidant enzymes, CAT activity in S. nigrum shoots, harvested at different growth periods after 4 types of N fertilizer application, obviously decreased, while POD and SOD activities increased (P < 0.05). Our study demonstrated that (NH4)2SO4 treatment exerted the most positive effect and the CH4N2O the second-most positive effect effect on S. nigrum Cd phytoremediation efficiency in double harvests at florescence stages and the growth conditions were better than others.

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Effect of different nitrogenous nutrients on the cadmium hyperaccumulation efficiency of Rorippa globosa (Turcz.) Thell.

Cited by 40 publications

References 25 publications

Influence of Biochar Derived Nitrogen on Cadmium Removal by Ryegrass in a Contaminated Soil

Influence of Biochar Derived Nitrogen on Cadmium Removal by Ryegrass in a Contaminated Soil

Seasonal Patterns of Soil Respiration and Related Soil Biochemical Properties under Nitrogen Addition in Winter Wheat Field

Enhanced Cd Phytoextraction by Solanum Nigrum L From Contaminated Soils Combined With the Application of N Fertilizers and Double Harvests

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