Nitrogen fertilizer improves boron phytoextraction by Brassica juncea grown in contaminated sediments and alleviates plant stress

Giansoldati, Virginia; Tassi, Eliana; Morelli, Elisabetta; Gabellieri, Edi; Pedron, Francesca; Barbafieri, Meri

doi:10.1016/j.chemosphere.2012.02.005

Cited by 86 publications

(26 citation statements)

References 30 publications

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“…Ni trogen ferti lization is bel ieved hel pf ul for phytoremediation of heavy metals because it enhances plant growth, influences the cellular charge balance (Marschner and Römheld 1994) and helps to produce proteins which form complexes with metals to affect translocation and/or storage or are antioxidative enzymes to reduce the level of oxidation caused by metals (Sarwar et al 2010). Nitrogen fertilizers, usually in the form of NH 4 + , NO 3 − , urea, or organic nitrogen (manure), are used to enhance plant biomass and the phytoextraction efficiency of contaminants from soils (Giansoldati et al 2012). This study showed that all forms of nitrogen could efficiently increase plant biomass to a similar extent.…”

Section: Discussionmentioning

confidence: 99%

Influence of nitrogen form on the phytoextraction of cadmium by a newly discovered hyperaccumulator Carpobrotus rossii

Liu

Zhang

et al. 2015

Environ Sci Pollut Res

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Using hyperaccumulator plants is an important method to remove heavy metals from contaminated land. Carpobrotus rossii, a newly found Cd hyperaccumulator, has shown potential to remediate Cd-contaminated soils. This study examined the effect of nitrogen forms on Cd phytoextraction by C. rossii. The plants were grown for 78 days in an acid soil spiked with 20 mg Cd kg −1 and supplied with (NH 4 ) 2 SO 4 , Ca(NO 3 ) 2 , urea, and chicken manure as nitrogen (N) fertilizers. Nitrification inhibitor dicyandiamide (DCD) was applied to maintain the ammonium (NH 4 + ) form. Nitrogen fertilization increased shoot biomass but decreased root biomass with the highest shoot biomass occurring in the manure treatment. Compared to the no-N control, urea application did not affect shoot Cd concentration, but increased Cd content by 17 % due to shoot biomass increase. Chicken manure significantly decreased CaCl 2 -extractable Cd in soil, and the Cd concentration and total Cd uptake in the plant. Rhizosphere pH was the highest in the manure treatment and the lowest in the NH 4 + treatments. The manure and nitrate (NO 3 − ) treatments tended to have higher rhizosphere pH than their respective bulk soil pH, whereas the opposite was observed for urea and NH 4 + treatments. Furthermore, the concentrations of extractable Cd in soil and Cd in the plant correlated negatively with rhizosphere pH. The study concludes that urea significantly enhanced the Cd phytoaccumulation by C. rossii while chicken manure decreased Cd availability in soil and thus the phytoextraction efficiency.

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Section: Discussionmentioning

confidence: 99%

Influence of nitrogen form on the phytoextraction of cadmium by a newly discovered hyperaccumulator Carpobrotus rossii

Liu

Zhang

et al. 2015

Environ Sci Pollut Res

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“…Differences in soil pH caused by the addition of different phosphate fertilisers can also lead to differences in phytoextraction (Mandal et al, 2012). Urea has also been used to alleviate plant stress and improve B phytoextraction by the plant species Brassica juncea (Giansoldati et al, 2012).…”

Section: Phytoremediationmentioning

confidence: 99%

Use of phytoremediation and biochar to remediate heavy metal polluted soils: a review

et al. 2014

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Abstract. Anthropogenic activities are resulting in an increase of the use and extraction of heavy metals. Heavy metals cannot be degraded and hence accumulate in the environment, having the potential to contaminate the food chain. This pollution threatens soil quality, plant survival and human health. The remediation of heavy metals deserves attention, but it is impaired by the cost of these processes. Phytoremediation and biochar are two sound environmental technologies which could be at the forefront to mitigate soil pollution. This review provides an overview of the state of the art of the scientific research on phytoremediation and biochar application to remediate heavy-metalcontaminated soils. Research to date has attempted only in a limited number of occasions to combine both techniques, however we discuss the potential advantages of combining both, and the potential mechanisms involved in the interaction between phytoremediators and biochar. We identified specific research needs to ensure a sustainable use of phytoremediation and biochar as remediation tools.

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“…Vanacker et al [30] also demonstrated a decrease in catalase activity in the leaves of Pisum sativum L. after 12 weeks of an experiment in conditions of varied nitrogen fertilization. Nitrogen fertilizer can alleviate toxic effects induced by other factors [31]. A study on the effect of nitrogen fertilization on rapeseed grown on sediments contaminated with boron showed that increasing the concentration of nitrogen is conducive to biomass production and alleviates boron-induced oxidative stress.…”

Section: Resultsmentioning

confidence: 99%

Effect of Varied NPK Fertilization on Catalase Activity of Amaranth (Amaranthus Cruentus L.)

Skwaryło-Bednarz¹,

Krzepiłko²

2013

Ecological Chemistry and Engineering S

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Abstract:A study was carried out on the effect of varied NPK fertilization on catalase activity per gram fresh weight of the leaves of two varieties of amaranth, Rawa and Aztek, at different developmental stages (seedling, five-leaf, flowering and mature seed), as well as in the seeds. Amaranth was grown in a field experiment in southeast Poland, at wide-row spacing on good wheat complex soil. The following combinations of macronutrient levels were applied: I -50 kg N · ha . The study showed that catalase activity exhibited a downward trend during the vegetation period of amaranth. The highest catalase activity was noted in the leaves during the first stage, ie the seedling stage. Increasing levels of NPK led to an increase in catalase activity. Leaves of the Rawa variety had higher catalase activity than those of the Aztek variety at every stage of development. The level of catalase activity in the amaranth seeds was also significantly affected by fertilization and the variety of amaranth. Higher levels of the fertilizers caused an increase in catalase activity in the seeds.

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Nitrogen fertilizer improves boron phytoextraction by Brassica juncea grown in contaminated sediments and alleviates plant stress

Cited by 86 publications

References 30 publications

Influence of nitrogen form on the phytoextraction of cadmium by a newly discovered hyperaccumulator Carpobrotus rossii

Influence of nitrogen form on the phytoextraction of cadmium by a newly discovered hyperaccumulator Carpobrotus rossii

Use of phytoremediation and biochar to remediate heavy metal polluted soils: a review

Effect of Varied NPK Fertilization on Catalase Activity of Amaranth (Amaranthus Cruentus L.)

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