Characterization of 140 Japanese and world rice collections cultivated in Nihonmatsu-city in Fukushima in terms of radiocesium activity concentrations in seed grains and straws to explore rice cultivars with low radiocesium accumulation
We studied varietal difference in radiocesium accumulation by using Japanese and World rice collection for future development of low accumulation varieties. As a result, the radiocesium activity concentration varied by 12- and 22-fold in seed grains and straws, respectively. When we examined the seed grain to straw ratio of radiocesium activity concentration, paddy rice cultivars of Japonica sub-species showed a lower result than Indica and Javanica paddy rice cultivars. These observations suggest that the Japonica paddy rice cultivars may have the property of repressing radioactive cesium translocation to edible parts.
KeywordsRadiocesium Rice Core collection Varietal difference
This study was supported by the Special Research Fund of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) Japan titled “Research and development of security and safe crop production to reconstruct agricultural lands in Fukushima prefecture based on novel techniques to remove radioactive compounds using advanced bio-fertilizer and plant protection strategies”.
- 4.Ministry of Health, Labor and Welfare, New Standard limits for Radionuclides in Foods. http://www.mhlw.go.jp/english/topics/2011eq/dl/food-120821_1.pdf. Accessed 25 Aug 2017
- 5.ICRP (1997) Individual monitoring for internal exposure of workers (preface and glossary missing). ICRP Publication 78. Ann ICRP 27 (3-4)Google Scholar
- 6.Hayano RS, Tsubokura M, Miyazaki M, Satou H, Sato K, Masaki S, Sakuma Y (2013) Internal radiocesium contamination of adults and children in Fukushima 7 to 20 months after the Fukushima NPP accident as measured by extensive whole-body-counter surveys. Proc Jpn Acad Ser B Phys Biol Sci 89:157–163CrossRefGoogle Scholar
- 7.Harada KH, Fujii Y, Adachi A, Tsukidate A, Asai F, Koizumi A (2013) Dietary intake of radiocesium in adult residents in Fukushima prefecture and neighboring regions after the Fukushima nuclear power plant accident: 24-h food-duplicate survey in December 2011. Environ Sci Techol 47:2520–2526CrossRefGoogle Scholar
- 8.Koizumi A, Harada KH, Niisoe T, Adachi A, Fujii Y, Hitomi T, Kobayashi H, Wada Y, Watanabe T, Ishikawa H (2012) Preliminary assessment of ecological exposure of adult residents in Fukushima Prefecture to radioactive cesium through ingestion and inhalation. Environ Health Prev Med 17:292–298CrossRefGoogle Scholar
- 16.IAEA (2012) Guidelines for remediation strategies to reduce the radiological consequences of environmental contamination. Technical report series no. 475. International Atomic Energy Agency, ViennaGoogle Scholar
- 21.Yamaguchi N, Takata Y, Hayashi K, Ishikawa S, Kuramata M, Eguchi S, Yoshikawa S, Sakaguchi A, Asada K, Wagai R, Makino T, Akahane I, Hiradate S (2012) Behavior of radiocesium in soil-plant system and its controlling factor: a review. Rep Natl Inst Agro Environ Sci Jpn 31:75–129 (In Japanese) Google Scholar
- 23.Kubo K, Nemoto K, Kobayashi H, Kuriyama Y, Harada H, Matsunami H, Eguchi T, Kihou N, Ota T, Keitoku S, Kimura T, Shinano T (2015) Analyses and countermeasures for decreasing radioactive cesium in buckwheat in areas affected by the nuclear accident in 2011. Field Crops Res 170:40–46CrossRefGoogle Scholar
- 24.Ohmori Y, Inui Y, Kajikawa M, Nakata A, Sotta N, Kasai K, Uraguchi S, Tanaka N, Nishida S, Hasegawa T, Skamoto T, Kawara Y, Aizawa K, Fujita H, Li K, Sawaki N, Oda K, Futagoishi R, Tsusaka T, Takahashi S, Takano J, Wakuta S, Yoshinari A, Uehara M, Takeda S, Nagano H, Miwa K, Aibara I, Ojima T, Ebana K, Ishikawa S, Sueyoshi K, Hasegawa H, Mimura T, Mimura M, Kobayashi IN, Furukawa J, Kobayashi D, Okouchi T, Tanoi K, Fujiwara T (2014) Difference in cesium accumulation among rice cultivars grown in the paddy field in Fukushima Prefecture in 2011 and 2012. J Plant Res 127:57–66CrossRefGoogle Scholar
- 30.Fujiwara T (2013) In: Nakanishi MT, Tanoi K (eds) Agricultural implications of the Fukushima nuclear accident. Springer, JapanGoogle Scholar
- 31.Ono Y, Sato H, Sakuma H, Nemoto K, Tanoi K, Nakanishi T (2014) Variation in rice radiocesium absorption among different cultivars. Fukushima-Ken Nogyo Sogo Senta Kenkyu Hokoku 46:29–32 (In Japanese) Google Scholar