外源铅在基质-大球盖菇子实体系统的迁移规律研究  

Transfer Characteristics of Lead from Substrate-to-fungi System at Fruiting Body Level of Stropharia rugoso-annulata

作　　者：陈颖乐 刘璐冰 王志宏 杨柳 王颂 曾雷[1] CHEN Yingle;LIU Lubing;WANG Zhihong;YANG Liu;WANG Song;ZENG Lei(Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China)

机构地区：[1]广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东广州510520

出　　处：《林业与环境科学》2024年第3期33-40,共8页Forestry and Environmental Science

基　　金：广东省林业局科研监测项目(2023KJQT001)。

摘　　要：为了从子实体水平探究重金属铅在基质-食用菌系统的迁移规律,研究利用大球盖菇Strophar-ia rugoso-annulata开展外源铅添加试验,对其基质总铅含量(Pb_(total))和有效态铅含量(Pb_(avail)),以及子实体铅含量(Pb)进行检测分析。结果表明:(1)基质Pb_(avail)与Pb_(total)之间具有良好的线性关系,随着Pb_(total)增加,Pb_(avail)增加,Pb_(avail)在Pb_(total)的占比也增加;(2)大球盖菇子实体的铅含量随基质Pb_(total)和Pb_(avail)的增加,呈现先增大后减小的趋势;(3)铅从基质向大球盖菇子实体转移的迁移系数TF(TFtotal和TFavail)随基质Pb_(total)及Pb_(avail)的增加,先增大后减小。研究揭示了在不同铅浓度条件下,重金属铅从基质向大球盖菇子实体迁移的变化规律,也表明基质的总铅含量及有效态铅含量可作为管控食用菌产品质量安全的有效指标。This study aims to investigate the transfer law of lead from the substrate-to-fungi system at the fruiting body level.An exogenous lead gradient addition test was carried out in Stropharia rugoso-annulata,and the total lead content(Pb_(total))and available lead content(Pb_(avail))in the substrate,and the lead content in the fruiting body were detected.The results indicated that there was a significant positive correlation between total lead concentration and available lead concentration in substrate.With the increase of Pb_(total)and Pb_(avail)in the substrate,the lead content in the fruiting body raised first and then fell.The transfer coefficient of lead(TFtotal and TFavail)from the substrate-to-fungi system showed a trend of increasing first and then decreasing,with the increase of Pb_(total)and Pb_(avail)in the substrate.This study revealed the transfer law of lead from the substrate-tofungi system at the fruiting body level of S.rugoso-annulata under different lead concentrations.The total amount and the available content of heavy metals may be effective indexes to the quality and safety of edible fungi.

关 键 词：大球盖菇 有效态铅 迁移系数 重金属污染 

分 类 号：X503.23[环境科学与工程—环境工程] S646[农业科学—蔬菜学]