Subcellular distribution and translocation of radionuclides in plants

Gouthu, Satyanarayana; Weginwar, R. G.; Arie, Tsutomu; Ambe, S.; Ozaki, Takuo; Enomoto, Shuichi; Ambe, F.; Yamaguchi, Isamu

doi:10.1002/etc.5620180921

Cited by 18 publications

(7 citation statements)

References 13 publications

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“…The multitracer technique, first developed by Ambe et al using the RIKEN Ring Cyclotron, rendered it possible to trace the behavior of many radionuclides at the same time [10]. The multitracer technique has demonstrated well its usability in environmental research [11,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Effect of humic acid on the bioavailability of radionuclides to rice plants

Ozaki¹,

Ambe

Abe

et al. 2003

Anal Bioanal Chem

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We investigated the effect of humic acid and solution pH on the uptake of the radionuclides, (83)Rb, (137)Cs, (54)Mn, (65)Zn, (88)Y, (102)Rh, and (75)Se in rice plants by the multitracer technique. The addition of humic acid to a culture medium containing SiO(2) increased the uptake of Mn and Zn at pH 4.3, whereas their uptake was decreased at pH 5.3. Humic acid depressed the uptake of Y at both pHs. The uptake of Se, which does not interact with humic acid, was not affected by its presence. These results suggest that uptake of the radionuclides by the rice plant is regulated by the affinity of radioactive nuclides for humic acid, as well as by the soil solution's pH.

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Section: Introductionmentioning

confidence: 99%

Effect of humic acid on the bioavailability of radionuclides to rice plants

Ozaki¹,

Ambe

Abe

et al. 2003

Anal Bioanal Chem

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“…The ratio for the leaves was slightly less than for the stems meaning that more strontium was present in the leaves. As there is no metabolic function for Sr (Handley and Overstreet 1963), it has been reported to concentrate in the plant cell cytoplasm (Gouthu et al 1999). Denser cytoplasm of the leaves plus their place next to the end of the transpiration stream (Kramer 1983) which is bringing minerals up from the root may help to account for the higher concentrations.…”

Section: Calcium and Strontium Contents Of Plants And Groundwatermentioning

confidence: 99%

100-N Area Strontium-90 Treatability Demonstration Project: Phytoextraction Along the 100-N Columbia River Riparian Zone ? Field Treatability Study

Fellows¹,

Fruchter²,

Driver³

et al. 2010

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Summary 90 Sr) exceeds the U.S. Environmental Protection Agency's drinking water standards for groundwater (8 picocuries/liter) by as much as a factor of 1000 at several locations within the Hanford 100-N Area and along the Columbia River shoreline (100-NR-2). The isotope is present both in the aquifer near the river and in the vadose and riparian zones of the river's shore.Phytoremediation, or more specifically the phytoextraction of 90 Sr is being considered as a potential remediation system along the riparian zone of the Columbia River as part of a treatment train that includes an apatite barrier to immobilize groundwater transport of 90 Sr. Phytoextraction would employ coyote willow (Salix exigua) to extract 90 Sr from the vadose zone soil and aquifer sediments (phytoextraction) and filter 90 Sr (rhizofiltration) from the shallow groundwater along the riparian zone of the Columbia River.A successful application of a phytoextraction strategy would require demonstration of: (1) the ability of willow roots to accumulate Sr and transport it to above-ground portions of the plant enabling the removal of the contaminant from the shoreline; (2) no discrimination in uptake between molecular Sr and 90 Sr; (3) a low probability of herbivore access to the plants and, where access prevention is not possible, a low potential for contaminant bioaccumulation and subsequent food chain transfer; (4) proof that the selected plant species can survive in the diverse environmental conditions that exist on the 100-NR-2 shoreline; and (5) the production of sufficient annual biomass to remove a significant amount of the contaminant. ] were consistently greater than 65 with threequarters of the assimilated label partitioned into the above ground shoot. Finally, insect herbivore experiments with aphids and moths feeding on 100-NR-2 sediment-grown willow shoots demonstrated no significant potential for bioaccumulation or food chain transfer from their natural activities.Therefore the objectives of this field study were three-fold:(1) to demonstrate that a viable, "managed" plot of coyote willows can be established on the shoreline of the Columbia River that would survive the same microenvironment to be encountered at the 100-NR-2 shoreline; (2) to show through engineered barriers that large and small animal herbivores can be prevented from feeding on these plants; and (3) to show that once established, the plants will provide sufficient biomass annually to support the phytoextraction technology.A field treatability demonstration plot was established on the Columbia River shoreline alongside the 100-K West water intake about 2 miles upstream from the 100-NR-2 area at the end of January 2007. The plot was delimited by a 3.05 m high chain-link fence and was approximately 10 x 25 m in size. A layer of fine mesh metal small animal screening was placed around the plot at the base of the fencing to a depth of 45 cm. A total of sixty plants were placed in six slightly staggered rows with 1-m spacing between plants. The actual plot size was 0....

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“…Using the multitracer technique, Gouthu et al studied the subcellular distribution of trace elements in soybean (Glycine max Merr.) and cucumber (Cucumis sativus L.), and the translocation of plant-absorbed radioactive tracers with growth in soybean (Gouthu et al 1999). Monitoring the uptake and translocation of tracers in plants should indicate how these elements enter the plant system and reach the edible parts.…”

Section: Introductionmentioning

confidence: 99%

Multitracer Screening: Brain Delivery of Trace Elements by Eight Different Administration Methods

et al. 2005

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Trace elements are closely associated with the normal functioning of the brain. Therefore, it is important to determine how trace elements enter, accumulate, and are retained in the brain. Using the multitracer technique, which allows simultaneous tracing of many elements and comparison of their behavior under identical experimental conditions, we examined the influence of different administration methods, i.e., intravenous (IV), intraperitoneal (IP), intramuscular (IM), subcutaneous (SC), intracutaneous (IC), intranasal (IN), peroral (PO), and percutaneous (PC) administration, on the uptake of trace elements. A multitracer solution containing 16 radionuclides (i.e., 7Be, 46Sc, 48V, 51Cr, 54Mn, 59Fe, 56Co, 65Zn, 74As, 75Se, 83Rb, 85Sr, 88Y, 88Zr, 95mTc, and 103Ru) was used. The results indicated that the 83Rb brain uptake rate with intranasal administration was approximately twice those obtained with the other administration methods. This result indicated that a portion of Rb was delivered into the brain circumventing the blood circulation and that delivery could be accomplished mainly by olfactory transport. Multitracer screening of trace element delivery revealed differences in brain uptake pathways among administration methods.

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Subcellular distribution and translocation of radionuclides in plants

Cited by 18 publications

References 13 publications

Effect of humic acid on the bioavailability of radionuclides to rice plants

Effect of humic acid on the bioavailability of radionuclides to rice plants

100-N Area Strontium-90 Treatability Demonstration Project: Phytoextraction Along the 100-N Columbia River Riparian Zone ? Field Treatability Study

Multitracer Screening: Brain Delivery of Trace Elements by Eight Different Administration Methods

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