Falandysz Jerzy, Saniewski Michał, Zalewska Tamara, Zhang Ji
a Environmental Chemistry and Ecotoxicology , University of Gdańsk , Gdańsk , Poland.
b Environmental and Computational Chemistry Group , School of Pharmaceutical Sciences, University of Cartagena , Cartagena , Colombia.
Isotopes Environ Health Stud. 2019 Jun;55(3):317-324. doi: 10.1080/10256016.2019.1609961. Epub 2019 Apr 30.
Amanita muscaria collected from a forested area in northern Poland in 2015 were analysed for activity concentrations of Cs and K. Total K concentration values were calculated from K data. Mushrooms were grouped in six fruiting bodies size classes regarding to their developmental stage. The Cs activity concentrations declined in A. muscaria as the fruiting bodies maturated. The contents of K/K activity remained constant in caps at different developmental stage, while for stipes an increase was around twofold (K from 925 ± 55 Bq kg dry biomass in the baby individuals and 1600 ± 63-1700 ± 53 Bq kg dry biomass in two oldest classes). A. muscaria is a weak accumulator of Cs, while a steep drop in activity concentrations of this nuclide in the fruiting bodies as they maturate has not been reported earlier for mushrooms. Clearly, a fate of Cs in A. muscaria is highly different from that of K/K that is an essential element to fungi. In parallel, an observed increase in the content of K/K in stipes of fruiting bodies with developmental state can be related to its 'hardening' and more fibrous nature with age and basic function to support the cap, but this has not been studied.
对2015年从波兰北部林区采集的毒蝇伞进行了铯和钾活度浓度分析。根据钾数据计算总钾浓度值。根据发育阶段，将蘑菇分为六个子实体大小类别。随着子实体成熟，毒蝇伞中的铯活度浓度下降。在不同发育阶段，菌盖中的钾/钾活度含量保持不变，而菌柄中的钾/钾活度含量增加了约两倍（在幼体个体中，钾含量为925±55贝克勒尔/千克干生物量，在两个最老的类别中，钾含量为1600±63 - 1700±53贝克勒尔/千克干生物量）。毒蝇伞是一种弱铯积累者，而此前尚未有报道称蘑菇子实体中该核素的活度浓度会随着成熟而急剧下降。显然，毒蝇伞中铯的归宿与钾/钾（对真菌来说是必需元素）的归宿截然不同。同时，随着发育状态的变化，子实体菌柄中钾/钾含量的增加可能与其随着年龄增长而“硬化”以及更具纤维性质有关，其基本功能是支撑菌盖，但这一点尚未得到研究。
