Radiocesium accumulation properties of Chengiopanax sciadophylloides

Sugiura, Yuki; Kanasashi, Tsutomu; Ogata, Yoshiro; Ozawa, Hajime; Takenaka, Chisato

doi:10.1016/j.jenvrad.2015.10.021

Cited by 30 publications

(10 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because Cs is mobile and can be easily distributed, its distribution within plants or within organs also varies among different plant species [2]. Examples include uptake via the vascular system of stems and leaves in Arabidopsis thaliana [9], seeds in Vicia faba [15], growing parts such as fruits, leaves, twigs, and bark in woody trees [1,18], new leaves in cedar plants [16], leaves in Indian mustard [22], and leaves in Chengiopanax sciadophylloides [24].…”

Section: Introductionmentioning

confidence: 99%

Distribution of cesium and cationic mineral elements in napiergrass

2019

View full text Add to dashboard Cite

Napiergrass is fast-growing perennial known for its high potential for accumulation of cesium (Cs). Cs is highly mobile within a plant and can be distributed to various plant organs. Here, we investigated the distribution of cesium-133 (133 Cs) and competitively translocated cationic minerals, such as potassium (K), calcium (Ca), and magnesium (Mg), in different organs of napiergrass. Treatments comprised four concentrations of 133 Cs applied to soil: 0 (as control); 300; 500; and 1000 μM. Leaf blades contained significantly higher concentrations of 133 Cs than stems under 300 and 500 μM 133 Cs treatments (P < 0.01). Specifically, significantly greater 133 Cs content was measured in younger parts of stems and leaf blades compared with mature or older plant parts.

show abstract

Section: Introductionmentioning

confidence: 99%

Distribution of cesium and cationic mineral elements in napiergrass

2019

View full text Add to dashboard Cite

show abstract

“…Additionally, cesium-137, the radioactive isotope derived from nuclear waste and fallout, presents a serious health risk and environmental threat such that improved phytoaccumulation efficiency of cesium offers advantages in the light of phytoremediation also. Many plant species have been tested in the search for ‘hyperaccumulator plants’ of cesium, however most of the species tested suffer low absorption efficiency for practical application in the soil 4 5 6 7 8 9 10 11 12 . Various factors have been investigated and suggested as positive regulators of cesium accumulation in plants.…”

mentioning

confidence: 99%

A novel role for methyl cysteinate, a cysteine derivative, in cesium accumulation in Arabidopsis thaliana

Adams

Miyazaki

Hayaishi-Satoh

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Phytoaccumulation is a technique to extract metals from soil utilising ability of plants. Cesium is a valuable metal while radioactive isotopes of cesium can be hazardous. In order to establish a more efficient phytoaccumulation system, small molecules which promote plants to accumulate cesium were investigated. Through chemical library screening, 14 chemicals were isolated as ‘cesium accumulators’ in Arabidopsis thaliana. Of those, methyl cysteinate, a derivative of cysteine, was found to function within the plant to accumulate externally supplemented cesium. Moreover, metabolite profiling demonstrated that cesium treatment increased cysteine levels in Arabidopsis. The cesium accumulation effect was not observed for other cysteine derivatives or amino acids on the cysteine metabolic pathway tested. Our results suggest that methyl cysteinate, potentially metabolised from cysteine, binds with cesium on the surface of the roots or inside plant cells and improve phytoaccumulation.

show abstract

“…Radiocesium (mainly 134 Cs and 137 Cs) is the predominant contributor to radiation exposure after the FDNPS accident because it has a relatively long half-life— 134 Cs has a half-life of 2.06 years and 137 Cs 30.2 years—high transferability, and wide distribution in the environment3. Because of these relatively long half-lives, residents have expressed concerns about whether 134 Cs and 137 Cs may remain on the surface of soils in the fields for extended period time, and consequently be found in the plants growing on that land.…”

mentioning

confidence: 99%

Concentrations of Radiocesium in Local Foods Collected in Kawauchi Village after the Accident at the Fukushima Dai-ichi Nuclear Power Station

Orita

Nakashima

Hayashida

et al. 2016

Sci Rep

View full text Add to dashboard Cite

We evaluated the current concentrations of radiocesium in local foods collected in Kawauchi Village, which is located less than 30 km from Fukushima Daiichi Nuclear Power Station, to minimize public anxiety regarding internal radiation exposure through the consumption of locally produced foods after the 2011 Fukushima accident. The number of samples exceeding the regulatory radiocesium limit (100 Bq/kg for general foods) was five out of 4,080 vegetables (0.1%), 652 of 1,986 (32.8%) among edible wild plants and fungi, and eight of 647 (1.2%) in fruits. Our study confirmed that the internal radiation doses of ingesting these foods are acceptably low compared to the public dose limit, ranging from 24.4 to 42.7 μSv for males and from 21.7 to 43.4 μSv for females, although the potential for radiation exposure still exists. Long-term comprehensive follow-up should take place to clarify trends in radiocesium concentrations in local foods and the committed effective doses found in Fukushima-area residents. By constructing a system that allows residents to access information on radiocesium concentration in foods, a risk communication model between specialists and residents could be developed in the recovery phase after the Fukushima accident.

show abstract

Radiocesium accumulation properties of Chengiopanax sciadophylloides

Cited by 30 publications

References 33 publications

Distribution of cesium and cationic mineral elements in napiergrass

Distribution of cesium and cationic mineral elements in napiergrass

A novel role for methyl cysteinate, a cysteine derivative, in cesium accumulation in Arabidopsis thaliana

Concentrations of Radiocesium in Local Foods Collected in Kawauchi Village after the Accident at the Fukushima Dai-ichi Nuclear Power Station

Contact Info

Product

Resources

About