Rare Earth Elements in Citrus Production Systems

Turra, Christian; Fernandes, Elisabete A. De Nadai; Bacchi, M. A.; Sarriés, Gabriel Adrián; Júnior, Fernando Barbosa; Reyes, Andrés Enrique Lai

doi:10.1080/01904167.2012.754040

Cited by 30 publications

(18 citation statements)

References 22 publications

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“…Other results indicate that the total REE content in roots and stems is lower than in leaves because translocation of REE occurs in roots and stems (Miao et al 2011). However, REE in Populus sieboldii follow the pattern leaves > main roots > trunks (Fu et al 2001), and in Citrus sinensis budded on C. limonia, the pattern soil > leaves > peel > pulp > seeds > juice (Turra et al 2013).…”

Section: Fractionation Of Ree Within Plantsmentioning

confidence: 99%

“…Pachystroma longifolium (França et al 2002), Sphagnum sp. (Markert and De Li 1991) and even citrus can be considered as bioaccumulators.The leaf/soil ratio of La (0.62-1.09) makes citrus even a stronger bioaccumulator than the two aforementioned plants (Turra et al 2013). As described above, a larger pool of total REE in soil is usually reflected in higher amounts of REE in plant tissue, up to, e.g., 9 880 ng g -1 (d.m.)…”

Section: Bioaccumulation and Plant Hyperaccumulatorsmentioning

confidence: 99%

“…The results of experiments conducted on four citrus farms in Brazil are alarming. The total content of La, Ce, and Nd in orange juice was 4 to 5 time higher than safety levels of REE in drinking water (Turra et al 2013). Further, high REE concentrations are inhibiting or are even toxic to plants grown around mining facilities (Anawar et al2012).…”

Section: Growth and Yield Of Crops And Tree Speciesmentioning

confidence: 99%

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Rare earth elements in plants

Kovarikova¹,

Tomášková²,

Soudek³

2019

Biologia plant.

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Since 1960, the positive effects of rare earth elements (REE) on crop physiology have been observed, and support for photosynthesis, biomass accumulation, secondary metabolites, or enzymes has been reported in 40% of studies. A higher content of chlorophylls a and b as well as carotenoids have been found along with an increased efficiency of photosystem II photochemistry and electron transfer rates. An increased activity of a key photosynthetic enzyme was also found in several plants growing in soil with a higher content of REE. An appropriate amount of REE also activates the antioxidant activity of peroxidase, superoxide dismutase, and catalase. These enzymes, together with a higher content of flavonoids and carotenoids, increase the resistance of plants to oxidative stress caused by different abiotic stresses. The positive effect of REE on biomass accumulation was also confirmed, but their affection on mycorrhizal symbiosis remains ambiguous. On the other hand, an excess of REE leads to damage to plants including the chloroplast ultrastructure. Therefore, the positive and negative effects of REE remain controversial, and the mechanisms of effects of REE in plants remain poorly understood. In addition to physiological processes, the absorption, bioavailability, and translocation of REE in plants as well as their possible ecotoxicology and hyperaccumulation are discussed in this review.

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Section: Fractionation Of Ree Within Plantsmentioning

confidence: 99%

Section: Bioaccumulation and Plant Hyperaccumulatorsmentioning

confidence: 99%

Section: Growth and Yield Of Crops And Tree Speciesmentioning

confidence: 99%

See 1 more Smart Citation

Rare earth elements in plants

Kovarikova¹,

Tomášková²,

Soudek³

2019

Biologia plant.

View full text Add to dashboard Cite

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“…Due to their higher mobility in soils, LREE are more easily absorbed by plants, thus occurring at greater contents than HREE in plant tissues. In fact, citrus plants have recently being described as REE bioaccumulators, accumulating especially LREE [144]. In addition, since HREE form much more stable complexes in soil solution, preferential absorption of LREE is favored [145].…”

Section: Ree In Plantsmentioning

confidence: 99%

Rare Earth Elements in the Soil Environment

et al. 2016

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Rare earth elements (REE) are a homogenous group of 17 chemical elements in the periodic table that are key to many modern industries including chemicals, consumer electronics, clean energy, transportation, health care, aviation, and defense. Moreover, in recent years, they have been used in agriculture. One of the consequences of their worldwide use is the possible increase of their levels in various environmental compartments. This review addresses major topics concerning the study of REE in the soil environment, with special attention to the latest research findings. The main sources of REE to soils, the contents of REE in soils worldwide, and relevant information on the effects of REE to plants were explored. Ecological and human health risk issues related to the presence of REE in soils were also discussed. Although several findings reported positive effects of REE on plant growth, many questions about their biological role remain unanswered. Therefore, studies concerning the actual mechanism of action of these elements on cellular and physiological processes should be further refined. Even more urgent is to unveil their chemical behavior in soils and the ecological and human health risks that might be associated with the widespread use of REE in our modern society.

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“…Phosphorus fertilizers utilized in conventional sugarcane crop systems contain variable amounts of thorium, uranium and rare earth elements (REEs) as contaminants from either phosphate rock ores or other ingredients used in the fertilizer industry (Abdel-Haleem, Sroor, El-BAhi & Zohny, 2001;Otero, Vitoria, Soler & Canas, 2005;Turra, Fernandes, Bacchi, 2011;Turra, Fernandes, Bacchi, Sarries, Barbosa, Reyes, 2013). This fact could explain the higher levels of dysprosium, samarium, thorium, yttrium, ytterbium and uranium in conventional sugarcane samples compared with organic samples.…”

Section: Resultsmentioning

confidence: 92%