Effect of different Cs concentrations on overall plant growth and Cs distribution in soybean

Effect of different Cs concentrations on overall plant growth and Cs distribution in soybean
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不同Cs浓度对大豆整体生长和Cs分布的影响

DOI:
10.1080/1343943x.2018.1429219
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发表时间:
2018
影响因子:
2.5
通讯作者:
T. M
T. M
中科院分区:
农林科学3区
文献类型:
--
作者:
Nihei;N.; Tanoi;K.; Nakanishi;T. M

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农作物中 Cs 的吸收和动态不仅可以使用 137 Cs 进行测量和检查,还可以使用 133 Cs(一种可以在常规实验室中分析的稳定同位素)进行测量和检查。然而,当使用 133 Cs时,由于电感耦合等离子体发射光谱法(ICP-OES)的检测灵敏度,添加的 133 Cs的浓度必须设定为高于土壤溶液中的浓度。人们担心如此高的铯浓度可能会对作物产生不利影响并干扰铯动态。使用大豆作为测试产品,我们首先检查了在不同 133 Cs 浓度的溶液下栽培的大豆的初始生长情况。结合每个 133 Cs 浓度,测试了两个钾 (K) 浓度。结果表明,在两种 K 浓度下,133 Cs 浓度高于 1 × 10−3mol L−1 时生长均受到抑制。以 133 Cs 浓度高于 1 × 10−6mol L−1 栽培的大豆可采用 ICP-OES 来测量植物组织中的 133 Cs 浓度。接下来,检查在整个生长过程中在不同 133 Cs 浓度下栽培的大豆在植物中的 Cs 分布。在与土壤中发现的 133 Cs 浓度相当的大豆植物中,Cs 的分布模式与 ICP-OES 测量的可测量 133 Cs 浓度(1 × 10−6–1 × 10−4mol L−1)下种植的植物中的 Cs 分布模式几乎相同。因此,在我们的研究中,用高达 1 × 10−4mol L−1 处理的大豆植物中 133 Cs 的分布被认为与田间栽培的植物中的分布相同。
The absorption and dynamics of Cs in crops can be measured and examined using not only137Cs but also133Cs, a stable isotope which can be analyzed in a regular laboratory. When133Cs is used, however, the concentration of added133Cs must be set higher than that in the soil solution due to the detection sensitivity of inductively coupled plasma optical emission spectrometry (ICP-OES). There is concern that such high Cs concentrations may adversely affect crops and interfere with Cs dynamics. Using soybean as a test product, we first examined the initial growth of soybean cultivated under exposure to solutions with different133Cs concentrations. In combination with each133Cs concentration, two potassium (K) concentrations were tested. Results show that at both K concentrations, growth was inhibited under133Cs concentrations higher than 1 × 10−3mol L−1. Soybeans cultivated at133Cs concentrations higher than 1 × 10−6mol L−1can be subject to ICP-OES for measuring133Cs concentrations in the plant tissue. Next, soybeans cultivated under different133Cs concentrations throughout growth were examined for Cs distribution in the plants. The distribution patterns of Cs in soybean plants cultivated at133Cs concentrations equivalent to those found in the soil were almost identical to those in plants cultivated at measurable133Cs concentrations (1 × 10−6–1 × 10−4mol L−1) as measured with ICP-OES. Therefore, in our investigation,133Cs distribution in soybean plants treated with up to 1 × 10−4mol L−1was considered equivalent to that in plants cultivated in the field.
DOI: 10.1073/pnas.1112058108
发表时间: 2011-12-06
影响因子: 11.1
作者:
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通讯作者: Yasunari, Tetsuzo
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DOI: --
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发表时间: 2011-12-06
影响因子: 11.1
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