瑞典北方森林中栓皮栎（Suillus variegatus）蕈体内钾、铷和铯（（133）Cs 和（137）Cs）之间的相关性。
Correlations between potassium, rubidium and cesium ((133)Cs and (137)Cs) in sporocarps of Suillus variegatus in a Swedish boreal forest.
机构信息
Department of Soil and Environment, Swedish University of Agricultural Sciences, P.O. Box 7014, SE-750 07 Uppsala, Sweden.
出版信息
J Environ Radioact. 2011 Apr;102(4):386-92. doi: 10.1016/j.jenvrad.2011.02.007.
An analysis of sporocarps of ectomycorrhizal fungi Suillus variegatus assessed whether cesium ((133)Cs and (137)Cs) uptake was correlated with potassium (K) or rubidium (Rb) uptake. The question was whether intraspecific correlations of Rb, K and (133)Cs mass concentrations with (137)Cs activity concentrations in sporocarps were higher within, rather than among, different fungal species, and if genotypic origin of sporocarps within a population affected uptake and correlation. Sporocarps (n = 51) from a Swedish forest population affected by the fallout after the Chernobyl accident were studied. The concentrations were 31.9 ± 6.79 g kg(-1) for K (mean ± SD, dwt), 0.40 ± 0.09 g kg(-1) for Rb, 8.7 ± 4.36 mg kg(-1) for (133)Cs and 63.7 ± 24.2 kBq kg(-1) for (137)Cs. The mass concentrations of (133)Cs correlated with (137)Cs activity concentrations (r = 0.61). There was correlation between both (133)Cs concentrations (r = 0.75) and (137)Cs activity concentrations (r = 0.44) and Rb, but the (137)Cs/(133)Cs isotopic ratio negatively correlated with Rb concentration. Concentrations of K and Rb were weakly correlated (r = 0.51). The (133)Cs mass concentrations, (137)Cs activity concentrations and (137)Cs/(133)Cs isotopic ratios did not correlate with K concentrations. No differences between, within or, among genotypes in S. variegatus were found. This suggested the relationships between K, Rb, (133)Cs and (137)Cs in sporocarps of S. variegatus is similar to other fungal species.
分析外生菌根真菌杂色栓孔菌的子实体，以评估铯（133Cs 和 137Cs）的吸收是否与钾（K）或铷（Rb）的吸收有关。问题是子实体中 Rb、K 和 133Cs 质量浓度与 137Cs 活度浓度的种内相关性是否高于不同真菌种间的相关性，以及种群中子实体的基因型起源是否会影响吸收和相关性。研究了受切尔诺贝利事故沉降物影响的瑞典森林种群中的 51 个子实体。浓度分别为 K（干重，均值±标准差）31.9±6.79g/kg，Rb 0.40±0.09g/kg，133Cs 8.7±4.36mg/kg 和 137Cs 63.7±24.2kBq/kg。133Cs 质量浓度与 137Cs 活度浓度相关（r=0.61）。133Cs 浓度与 137Cs 活度浓度之间存在相关性（r=0.75），133Cs 浓度与 Rb 浓度之间也存在相关性（r=0.44），但 137Cs/133Cs 同位素比值与 Rb 浓度呈负相关。K 和 Rb 浓度之间呈弱相关性（r=0.51）。133Cs 质量浓度、137Cs 活度浓度和 137Cs/133Cs 同位素比值与 K 浓度无关。未发现 S. variegatus 内、间或间基因型之间存在差异。这表明 S. variegatus 子实体中 K、Rb、133Cs 和 137Cs 之间的关系与其他真菌物种相似。
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