Transfer of radiocesium from hydroponic medium to potherb mustard and tomato plants

Yasutaka, Tetsuo; Miyoshi, Hideyuki; Ito, Kaoru

doi:10.1080/00380768.2014.905871

Cited by 6 publications

(8 citation statements)

References 11 publications

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“…By contrast, K + accumulation may occur mainly through a pathway not inhibited by Ca 2+ , probably a voltage-gated K + channel like the AKT1 homolog SlLKT1 (Hartje et al 2000, Ródenas et al 2017, although a contribution of NSCC to low-affinity K + uptake cannot be discarded. In addition to the Cs + -polluted areas mentioned above, contamination of soils and water sources in the nearby areas of nuclear power stations is produced because of accidental spills (Nagao et al 2013, Yasutaka et al 2014. In this case, the concern is the accumulation of radioactive Cs + in plants from micromolar non-toxic concentrations.…”

Section: Discussionmentioning

confidence: 99%

“…surrounding nuclear accidents such as those of Chernobyl in 1986 and Fukushima in 2011 (White and Broadley 2000, Nagao et al 2013, Yasutaka et al 2014. In contaminated areas, 134 Cs + and 137 Cs + (with half-lives of 2 and 30 years approximately) are the most common cesium radioactive isotopes.…”

Section: Introductionmentioning

confidence: 99%

“…It can be toxic for plants at millimolar concentrations since it can compete with K + (White and Broadley ). In addition, contamination by radiocesium has menaced agriculture in lands surrounding nuclear accidents such as those of Chernobyl in 1986 and Fukushima in 2011 (White and Broadley , Nagao et al , Yasutaka et al ). In contaminated areas, 134 Cs + and 137 Cs + (with half‐lives of 2 and 30 years approximately) are the most common cesium radioactive isotopes.…”

Section: Introductionmentioning

confidence: 99%

“…Radiocesium concentration in contaminated lands is very low, below the micromolar range (White and Broadley ), mostly concentrated in the 0–5 cm top soil layer (Lepage et al ). Rainfall can move radiocesium from soil areas to continental water, and plants can take it up from irrigation water or hydroponic systems, even from very low concentrations (Nagao et al , Yasutaka et al ). Once in the plant it can be transferred to animals and humans through the food chain and produce important health problems.…”

Section: Introductionmentioning

confidence: 99%

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Pharmacological and gene regulation properties point to the SlHAK5 K⁺ transporter as a system for high‐affinity Cs⁺ uptake in tomato plants

Ródenas

Nieves‐Cordones

Martı́nez

et al. 2017

Physiologia Plantarum

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Potassium (K ) and cesium (Cs ) are chemically similar but while K is an essential nutrient, Cs can be toxic for living organisms, plants included. Two different situations could lead to problems derived from the presence of Cs in agricultural systems: (1) presence of Cs at high concentrations that could produce toxic effects on plants, (2) presence of micromolar concentrations of radiocesium, which can be accumulated in the plant and affect animal and human health through the food chain. While K uptake has been well described in tomato plants, information on molecular mechanisms involved in Cs accumulation in this species is absent. Here, we show that in tomato plants, high concentrations of Cs produce deficiency of K but do not induce high-affinity K uptake or the gene encoding the high-affinity K transporter SlHAK5. At these concentrations, Cs uptake takes place through a Ca -sensitive pathway, probably a non-selective cation channel. At micromolar concentrations, Cs is accumulated by a high-affinity uptake system upregulated in K -starved plants. This high-affinity Cs uptake shares features with high-affinity K uptake. It is sensitive to NH and insensitive to Ba and Ca and its presence parallels the pattern of SlHAK5 expression. Moreover, blockers of reactive oxygen species and ethylene action repress SlHAK5 and negatively regulate both high-affinity K and Cs uptake. Thus, we propose that SlHAK5 contributes to Cs uptake from micromolar concentrations in tomato plants and can constitute a pathway for radiocesium transfer from contaminated areas to the food chain.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pharmacological and gene regulation properties point to the SlHAK5 K⁺ transporter as a system for high‐affinity Cs⁺ uptake in tomato plants

Ródenas

Nieves‐Cordones

Martı́nez

et al. 2017

Physiologia Plantarum

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“…Although model studies using artificially contaminated media have been performed on vegetables and oil crops (Bengtsson et al, 2013;Choi et al, 2008;Nisbet and Shaw, 1994;Yasutaka et al, 2014), studies on the effect of radiocesium exposure on vegetables and oil crops cultivated in fields near the nuclear power plant after the accident are difficult to perform, but are important. Radiocesium activity concentrations (RCs conc.…”

Section: Cs Andmentioning

confidence: 99%

Radiocesium Distribution in Soil and <i>Brassica napus</i> Grown in Contaminated Soils

Kanayama

Omura

Goryo³

et al. 2018

Hortic J

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Brassica napus was cultivated in three test fields exposed to different radionuclide contamination levels 1.5 years after the Fukushima Daiichi nuclear power plant accident to investigate the correlation between soil contamination and radiocesium activity concentration (RCs conc.) in plants. The correlations between total and exchangeable RCs conc. were strong in the plow layer (L1) and the layer 5 cm below L1 (L2). Watersoluble radiocesium was not detected in either layer, and little radiocesium penetration was observed below L2. Correlation coefficients between RCs conc. in each plant organ and soil layers were calculated. Correlations between RCs conc. in each vegetative organ and total and exchangeable RCs conc. in L1 and correlations between vegetative organs were mostly strong during vegetative growth and flowering periods. Correlations between RCs conc. in flowers with that in L1, L2, and other vegetative organs were not significant. RCs conc. in L1 may more directly affect concentrations in roots and shoots. RCs conc. in oil extracted from seeds was measured, and the results suggested that radiocesium was not detectable in the oil fraction. Our data regarding radiocesium in soil and plants and their correlations obtained by extensive cultivation in contaminated soils could be useful to gain a better scientific understanding of radiocesium transport and accumulation and to provide useful information for the future utilization of areas with low contamination levels.

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Phytoremediation of 137Cs: factors and consequences in the environment

Singh

Dhal

Kumar

et al. 2022

Radiat Environ Biophys

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Transfer of radiocesium from hydroponic medium to potherb mustard and tomato plants

Cited by 6 publications

References 11 publications

Pharmacological and gene regulation properties point to the SlHAK5 K⁺ transporter as a system for high‐affinity Cs⁺ uptake in tomato plants

Pharmacological and gene regulation properties point to the SlHAK5 K⁺ transporter as a system for high‐affinity Cs⁺ uptake in tomato plants

Radiocesium Distribution in Soil and <i>Brassica napus</i> Grown in Contaminated Soils

Phytoremediation of 137Cs: factors and consequences in the environment

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Transfer of radiocesium from hydroponic medium to potherb mustard and tomato plants

Cited by 6 publications

References 11 publications

Pharmacological and gene regulation properties point to the SlHAK5 K+ transporter as a system for high‐affinity Cs+ uptake in tomato plants

Pharmacological and gene regulation properties point to the SlHAK5 K+ transporter as a system for high‐affinity Cs+ uptake in tomato plants

Radiocesium Distribution in Soil and <i>Brassica napus</i> Grown in Contaminated Soils

Phytoremediation of 137Cs: factors and consequences in the environment

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Pharmacological and gene regulation properties point to the SlHAK5 K⁺ transporter as a system for high‐affinity Cs⁺ uptake in tomato plants

Pharmacological and gene regulation properties point to the SlHAK5 K⁺ transporter as a system for high‐affinity Cs⁺ uptake in tomato plants