Takuro Shinano

Takuro Shinano
Hokkaido University | Hokudai · Research Faculty of Agriculture

Doctor of Agriculture

About

239
Publications
33,699
Reads
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5,102
Citations
Citations since 2017
61 Research Items
2277 Citations
20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500
Introduction
Developing countermeasure against radioactive materials contaminated agricultural field, and discover the mechanisms to regulate its transfer from soil to plant.
Additional affiliations
April 2019 - present
Hokkaido University
Position
  • Professor
April 2013 - March 2019
National Agriculture and Food Research Organization
Position
  • Managing Director
April 2012 - present
Hokkaido University
Education
April 1986 - March 1991
Hokkaido University
Field of study
  • Agricultural chemistry

Publications

Publications (239)
Article
 Background and Aims The abundance or decline of fern populations in response to environmental change has been found to be largely dependent on specific physiological properties that distinguish ferns from angiosperms. Many studies have focused on water use efficiency and stomatal behaviors, but the effects of nutrition acquirement and utilization...
Article
Nutrient status of plant affects root exudates of plant. Little is known about effect of potassium status on root exudation. Objective of this study was to identify metabolites in rhizosphere soil of soybean under different potassium conditions. Two soybean cultivars (Satonohohoemi (SAT) and Tachinagaha (TAC)) were grown in soil culture under low (...
Article
After the Tokyo Electric Power Company’s Fukushima Dai-ichi Nuclear Power Plant accident in 2011, radioactive cesium (RCs) was released in greater concentrations than radioactive strontium (RSr) in the surrounding environment. Most of the countermeasures were developed to mitigate the RCs transfer from the soil to plants. However, to avoid what has...
Article
To evaluate the effectiveness of potassium (K) application in mitigating¹³⁷Cs transfer from soil to plants, several vegetable species were cultivated under field and pot experiments. In the field experiment, squash, sweet potato, turnip, potato, and carrot were examined in 2020 and 2021 in two different areas of Hamadori (coastal region in Fukushim...
Article
To mitigate radioactive cesium from soil to plant, increasing and maintaining the exchangeable potassium (ExK) level during growth is widely accepted after Tokyo Electric Company's Fukushima Dai-ichi Nuclear Plant accident in Japan. This is because the antagonistic relationship between soil solution K and ¹³⁴Cs + ¹³⁷Cs (RCs) concentrations changes...
Article
Phosphorus (P) is an essential element for crop production; however, availability tends to be low due to slow diffusion and high fixation in soils. To cope with phosphate deficiency, white lupines (Lupinus albus L.) form unique root structures called cluster roots. The objective of this study was to elucidate detailed spatial differences of the mec...
Article
Lupinus albus L. (lupin) has a high tolerance for phosphorus deficient conditions as its roots can solubilize the unavailable phosphorus in the rhizosphere soil. The roots may also be able to solubilize other elements, but this requires further investigation. In this study, therefore, we conducted two experiments to comprehensively investigate the...
Article
In the present study, we conducted experiments using wheat to elucidate whether the increased accumulation of molybdenum in leaves under nitrogen deficiency is due to the plant’s own metabolic response, and further to estimate the role of molybdenum in the nitrogen deficiency response. Even under different growth conditions such as soil culture, hy...
Article
Full-text available
Ionomic profiles are primarily influenced by genetic and environmental factors. Identifying ionomic responses to varietal effects is necessary to understand the ionomic variations among species or subspecies and to potentially understand genetic effects on ionomic profiles. We cultivated 120 rice (Oryza sativa) varieties to seedling stage in identi...
Article
Low transfer of radioactive cesium (radiocesium) from soil to grains of agricultural crops is desirable to ensure food safety for humans and animals. Although the transfer of radiocesium from soil to grains is higher in upland crops such as soybean (Glycine max L.) than in paddy rice (Oryza sativa L.), little information related to the specific dif...
Article
The Tokyo Electric Company's Fukushima Dai-ichi Nuclear Power Plant accident contaminated a large area of agricultural land with radioactive cesium. If the contamination levels were high, topsoil removal or inversion tillage were the major countermeasures used to decrease the radioactivity of the soil. However, a substantial level of radioactive ce...
Article
Full-text available
Aluminum (Al)-tolerant tobacco cell line ALT301 hardly exhibits Al-triggered reactive oxygen species (ROS) production, compared with wild-type line SL. Molecular mechanism leading to this phenotype was investigated comparatively with SL. Under normal growth condition, metabolome data suggested the activation of glycolysis and lactate fermentation b...
Article
Field and pot experiments were conducted to evaluate the effectiveness of coarse Finnish phlogopite application to reduce radiocesium uptake by paddy rice (Oryza sativa L.). The application of phlogopite was expected to reduce radiocesium uptake by crops through K supply and radiocesium retention. Three fields were set in Fukushima Prefecture, and...
Article
Fruit blossom-end rot (BER) is a serious physiological disorder that can cause significant yield losses in tomato (Solanum lycopersicum). Although many studies have suggested that calcium (Ca) deficiency in tomato fruits is a major factor for BER, its onset mechanism has not been fully elucidated. Ionomics is a high-throughput elemental profiling o...
Article
Full-text available
In 2011, Great East Japan Earthquake and subsequent tsunami caused severe damage on the TEPCO’s nuclear power plants in Fukushima prefecture. A large area of agricultural fields in Eastern Japan was suffered by substantial amount of radioactive materials (especially radiocesium) and tremendous efforts has been taken to remediate the contaminated fi...
Article
We conducted a field experiment in soybean with different levels of K application to elucidate the comparative dynamics of 137 Cs and K. The inventory of K in the shoots increased substantially from the fifth trifoliate stage to the full seed stage, and as the absorption of K increased, so too did the absorption of 137 Cs. Overall, the effect of K...
Chapter
The Tohoku region is about 210 km east to west and 510 km north to south, with the Ohu Mountains and the Nasu Volcanic in the central area, the Kitakami and Abukuma Mountains on the east, and the Dewa Mountains and Chokai Volcano on the west. Therefore, because the Sea of Japan side and the Pacific side is divided into the mountainous backbone, the...
Chapter
The Tohoku region is about 210 km east to west and 510 km north to south, with the Ohu Mountains and the Nasu Volcanic in the central area, the Kitakami and Abukuma Mountains on the east, and the Dewa Mountains and Chokai Volcano on the west. Therefore, because the Sea of Japan side and the Pacific side is divided into the mountainous backbone, the...
Article
Full-text available
Aims Root exudates of soybean grown under low-, normal-, and high-K⁺ conditions were evaluated using metabolomics. Methods Two soybean cultivars, ‘Satonohohoemi’ (low-K-tolerant) and ‘Tachinagaha’ (low-K sensitive), were hydroponically grown with 6 (K6), 60 (K60), and 120 (K120) mg K L⁻¹ for 7 and 14 days after transplanting (DAT). Root exudates w...
Article
Most of environmental monitoring programs include measurements of the air dose rates and the radionuclides activity concentration in plants. Both these parameters depend on deposition density of radionuclides. Therefore, measurements of one parameter can (with some supplementary information) be used as an indicator for the other parameter. After th...
Article
Data on reduction of radioactivity in plants are highly important for making decision on emergency response and remediation of contaminated areas. Dynamics of the ¹³¹I and ¹³⁷Cs concentrations in the weed leaves sampled in the areas affected by the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident in Japan was assessed for the period March–Dec...
Article
Most available measurement methods and protocols for radioactive materials are focused on the use of high-precision sampling and analysis and do not consider the practicality of these techniques in the case of large-scale emergencies involving high numbers of samples and measurements. The experience gained after the Fukushima Daiichi Nuclear Power...
Article
After the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, immediate soil and vegetation sampling were conducted according to the action plan of nuclear emergency monitoring; however, analysing the monitoring dataset was difficult because the sampling protocols were not standardised. In this study, the sampling protocols applied just after t...
Article
The measurement of radioactivity in food and agricultural ecosystems is an essential task for keeping the population safe after a nuclear emergency. Prior to the Tokyo Electric Power Company's Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in 2011, the probability of such an accident, combining complex effects of natural and technical fact...
Article
Full-text available
The release of rhizodeposits differs depending on the root position and is closely related to the assimilated carbon (C) supply. Therefore, quantifying the C partitioning over a short period may provide crucial information for clarifying root–soil carbon metabolism. A non-invasive method for visualising the translocation of recently assimilated C i...
Article
Prediction model to estimate brown rice RCs concentration by the seedlings using different soils
Book
To mitigate the contamination from the Fukushima Daiichi nuclear power plant accident, many agricultural fields in Fukushima Prefecture were treated mainly by topsoil removal and potassium application. Both countermeasures sufficiently reduced the level of radiocaesium contamination in agricultural products. This paper describes the situation five...
Article
The behavior of radiocesium in wild animal meats upon cooking was investigated. The ratio of the concentration change (processing factor, Pf), remaining ratio (food processing retention factor, Fr), and removal ratio of radiocesium in the meats by grilling, boiling, and steaming were determined. Differences in cooking methods, rather than differenc...
Article
Full-text available
Decreasing the transfer of radioactive cesium (RCs) from soil to crops has been important since the deposition of RCs in agricultural soil owing to the Fukushima nuclear power plant accident of 2011. We investigated the genotypic variation in RCs accumulation in 234 and 198 hexaploid wheat (Triticum spp.) varieties in an affected field in 2012 and...
Chapter
To mitigate the contamination from the Fukushima Daiichi nuclear power plant accident, many agricultural fields in Fukushima Prefecture were treated mainly by topsoil removal and potassium application. Both countermeasures sufficiently reduced the level of radiocaesium contamination in agricultural products. This paper describes the situation five...
Article
Eight years have passed since the radioactive caesium contamination of farmland, inland waters, and coastal waters mainly in Fukushima Prefecture, which originates from the TEPCO’s Fukushima Dai-ichi Nuclear Power Plant Accident. We summarized the past activities and the current situation, and countermeasures to be considered in the future. From ag...
Article
Potassium (K) and radiocaesium (RCs) were chemically extracted from soils derived from granite (G soils) and sedimentary rock (S soils) in Fukushima, Japan. The extractants employed were 1 M HNO3, concentrated HNO3, and HF + HClO4. As S soils contain a lower amount of trioctahedral 2:1 phyllosilicates than G soils, the RCs/K ratio was higher in S s...
Article
The time-dependence of 137Cs in new shoots of tea (Camellia sinensis (L.) Kuntze) following a137Cs-deposition was analyzed and quantified in terms of effective half-lives. The underlying monitoring studies were performed after the accidents in the Chernobyl and the Fukushima Daiichi nuclear power plants for tea plants growing in Japan. The major tr...
Article
Full-text available
We investigated changes for amounts of 14 elements involved in atmospheric pollution in rooftop turfs over the years. All elements concentrations of grasses in rooftop turfs increased after completion and amounts of al elements except for thallium (Tl) of grasses and organic layer increased with age. These results suggested that the deposit element...
Article
In this mini review, the importance of rhizosphere is focused. As the rhizosphere is underneath the soil, the analytical approach is still required from the viewpoints of understanding the interaction among root, soil and its interface. For this purpose, multi omics approach has been carried out with the effort to visualize the active rhizosphere a...
Article
Full-text available
We assessed the repeatability and reproducibility of methods for determining low dissolved radiocesium concentrations in freshwater in Fukushima. Twenty-one laboratories pre-concentrated three of 10 L samples by five different pre-concentration methods (Prussian-blue-impregnated filter cartridges, coprecipitation with ammonium phosphomolybdate, eva...
Article
To investigate the main factors that control the dissolved radiocesium concentration in river water in the area affected by the Fukushima Daiichi nuclear power plant accident, the correlations between the dissolved 137Cs concentrations at 66 sites normalized to the average 137Cs inventories for the watersheds with the land use, soil components, top...
Article
Full-text available
This paper describes a rapid quantification method for radioactive strontium (⁹⁰Sr) in fresh foods (perishable foods) and has been comparatively evaluated with the common classical radiometric quantification method. Inductively coupled plasma–dynamic reaction cell-mass spectrometry with online solid-phase extraction (cascade-ICP–MS) rapidly determi...
Article
We investigated changes for amounts of 14 elements involved in atmospheric pollution in rooftop turfs over the years. All elements concentrations of grasses in rooftop turfs increased after completion and amounts of all elements except for thallium (Tl) of grasses and organic layer increased with age. These results suggested that the deposite eleme...
Article
Weathered micaceous minerals (micas) are able to release potassium ion (K +) and fix caesium-137 (137 Cs), both of which reduce soil-to-plant transfer of 137 Cs. Among micas, trioctahedral micas such as biotite is expected to have a stronger ability to supply nonexchangeable K + and a higher amount of Cs fixation sites than dioctahedral micas such...
Article
We tested whether introducing an arbuscular mycorrhizal fungi (AMF)-host plant with a reduced P application rate could maintain soybean seeds’ nutrients quality. The dynamic variation of 14 nutrients were analyzed in source and sink organs during seed-filling stage. The AMF-host and non-AMF-host plants, sunflower and mustard, were grown as precedin...
Article
Full-text available
We studied microbe-plant interactions of white lupin, a cluster root-forming plant, under low P and N conditions to examine increased nutrient acquisition by plants either by a shift to a more specialized microbial community or changes in microbial enzyme production. White lupin plants were grown in rhizoboxes filled with either P- or N-deficient s...
Article
Full-text available
Yamakiya District in the town of Kawamata, Fukushima Prefecture, was evacuated after the nuclear accident at the Tokyo Electric Power Company’s Fukushima Dai-ichi nuclear power plant in 2011. Since then, nuclear decontamination procedures have been applied to the surrounding environment, including agricultural fields. The decontamination procedure...
Article
Full-text available
Background and aims Radiocesium uptake and accumulation in crops has been studied in Japan since the March 2011 nuclear power plant accident. However, few studies have reported how cesium (Cs) is distributed in aboveground parts and how it accumulates in edible parts. Here, we report the dynamics of Cs in aboveground parts of rice (Oryza sativa L.)...
Article
To reduce radiocesium uptake by rice, large amounts of potassium fertilizer have been applied to paddy fields contaminated by radiocesium released from the Fukushima Dai-ichi Nuclear Power Plant owned by the Tokyo Electric Power Company. The Fukushima Prefectural Government recommended maintenance of the soil exchangeable K content up to 200 mg K k...
Conference Paper
Full-text available
The 2011 Great East Japan Earthquake and Tsunami caused the accident at Tokyo Electric Power Company (TEPCO)’s Fukushima Daiichi Nuclear Power Plant (FDNPP) in Japan and released a large amount of radioactive materials (131I, 134Cs and 137Cs are of concern) to the agricultural products and fields. Evergreen plants (tea), winter crops (winter wheat,...
Article
Increasing exchangeable potassium (ExK) content in soil to an appropriate level is important to mitigate the transfer of radioactive cesium to crops. We focused on a buckwheat (Fagopyrum esculentum Moench) field with a low ExK content, despite the application of K, in Fukushima Prefecture, Japan (Field A), following the Tokyo Electric Power Company...
Article
Incidents at the Fukushima and Chernobyl nuclear power stations have resulted in widespread environmental contamination by radioactive nuclides. Among them, 137cesium has a 30 year half-life, and its persistence in soil raises serious food security issues. It is therefore important to prevent plants, especially crop plants, from absorbing radiocesi...
Article
Incidents at the Fukushima and Chernobyl nuclear power stations have resulted in widespread environmental contamination by radioactive nuclides. Among them, 137cesium has a 30 year half-life, and its persistence in soil raises serious food security issues. It is therefore important to prevent plants, especially crop plants, from absorbing radiocesi...
Article
Full-text available
The effect of soil exchangeable (plant-available) potassium (ExK) content on cesium (Cs) absorption and translocation in buckwheat was evaluated in a field contaminated with radioactive Cs (¹³⁴Cs and ¹³⁷Cs, RCs) in 2013. The RCs concentration in buckwheat was significantly positively correlated with the naturally occurring stable Cs (¹³³Cs, SCs) co...
Article
Full-text available
Glutathione and phytochelatins are sulfur containing compounds playing an important role in cadmium (Cd) detoxification. We examined the Cd-induced changes in the percentage of sulfur containing compounds to total sulfur in wild-type and sulfate transporter 1;2 knockout mutant, sel1–10. Cd treatment increased the proportion of sulfate and thiols in...
Article
A large amount of radiocesium was released from the accident at Fukushima Daiichi Nuclear Power Plant of Tokyo Electric Power Company. The determination of dissolved and particulate radiocesium concentrations in water is important, which can be used as basic information for understanding the long-term radiocesium dynamics in the environment and the...
Article
Molybdenum (Mo) is an essential nutrient for plants, and is required for nitrogenase activity of legumes. However, the pathways of Mo uptake from soils and then delivery to the nodules have not been characterized in legumes. In this study, we characterized a high-affinity Mo transporter (LjMOT1) from Lotus japonicus. Mo concentrations in an ethyl m...
Article
Full-text available
Cadmium (Cd) is a highly toxic and non-essential element for plants, whereas phytochelatins and glutathione are low-molecular-weight sulfur compounds that function as chelators and play important roles in detoxification. Cadmium exposure is known to induce the expression of sulfur-assimilating enzymes and sulfate uptake by roots. However, the molec...
Article
Full-text available
Soil contains various essential and nonessential elements, all of which can be absorbed by plants. Plant ionomics is the study of the accumulation of these elements (the ionome) in plants. The ionomic profile of a plant is affected by various factors, including species, variety , organ, and environment. In this study, we cultivated various vegetabl...
Data
Average mineral concentration (mg g-1) of each element in leaves of Komatsuna4 in 2011 and 2012. (PDF)
Data
Chemical properties of the field soils used in this study. (PDF)
Data
Mineral concentration (mg g-1) in edible or nonedible part of each cultivar. (XLSX)
Article
Full-text available
Radioactive Cs contamination of vast area including crop land with a focus on TEPCO's Fukushima Daiichi Nuclear Power Plant accident in March 2011, still ask farmers to reduce the uptake of radioactive materials to the crops in the farmland even today. Several removal technologies from the paddy and upland soils, volume reduction of waste materials...
Article
The relative distribution of 22 mineral elements in the roots, nodules and shoots of the soybean (Glycine max L. Merr. cv. Tsurumusume) at R1 (beginning of the flowering stage) and R7 (beginning of the mature stage) was investigated in response to ammonium and manure N treatment. Plants receiving only atmospheric nitrogen served as the negative con...
Article
Full-text available
The Great East Japan Earthquake on 11 March 2011, caused the release of radioactive materials from the Fukushima Daiichi Nuclear Power Plant (FDNPP), contaminating eastern Japan, particularly in part of Fukushima Prefecture. In 2012 and 2014, the radiocaesium concentration in brown rice did not exceed regulatory levels in Minamisoma City, Fukushima...
Chapter
Full-text available
Despite a concentration of exchangeable K of >208 mg kg−1 dry weight in soil, the brown rice grown in Minamisoma City in 2013 had a higher concentration of radiocesium than the new Japanese standard (100 Bq kg−1) for food. To analyze the factors affecting the radiocesium concentration in brown rice, we carried out pot tests using paddy soil and irr...
Article
This study assessed soil contamination with high radioactive cesium (R–Cs) concentration in buckwheat grains by lodging, and assessed the possibility of R–Cs reduction in grain through post-harvest preparation. Analysis of buckwheat grain produced in farmers’ fields and reports from farmers indicated that grain from fields that had lodging showed h...
Article
Full-text available
In order to supply pleasant foods in ordinal dietary, improving crop quality by applying effective growth conditions is a desirable but challenging approach. In this study, to determine the sensory quality of mizuna (Brassica rapa L. var. Nipposinica), one of a Brassica leafy crops grown with different fertilizer application, GC–MS based hydrophili...
Article
Full-text available
Ionomics is the study of elemental accumulation in living organisms using high-throughput elemental profiling. In the present study, we examined the ionomic responses to nutrient deficiency in maize grown in the field in long-term fertilizer trials. Furthermore, the available elements in the field soils were analyzed to investigate their changes un...
Article
Low cadmium (Cd) transfer from the soil to edible parts of crop plants is important to minimize toxicity to humans and animals. We previously showed that Cd accumulation in grains differs substantially among varieties of common wheat (Triticum aestivum L.). In this study, we investigated the factors responsible for these differences by comparing th...
Article
Full-text available
After the TEPCO Fukushima Dai-ichi Nuclear Power Plant accident in 2011, the radiocaesium, which flowed into the paddy fields via irrigation water, have been widely investigated. When the concentration of radiocaesium in the water samples containing suspended solids were directly measured using a high purity germanium detector with a 2L marinelli b...
Article
A pot cultivation experiment was conducted to elucidate the influence of the nonexchangeable potassium (K) of mica on radiocesium ((137)Cs) uptake by paddy rice (Oryza sativa L. cv. Koshihikari), and to evaluate the potential of mica application as a countermeasure to reduce radiocesium transfer from soil to paddy rice. The increase in the exchange...
Article
This study adopted 33 different varieties of Amaranthus and investigated the depositions of 23 mineral elements in shoot grown in the field of Iino town of Fukushima prefecture. Significant varietal effects were detected for all elements except Se and degree of inter-species variation was highly element-dependent. Among 23 elements, Amaranths were...