Biomonitoring heavy metal contaminations by moss visible parameters
Biomonitoring heavy metal contaminations by moss visible parameters
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通过苔藓可见参数生物监测重金属污染
DOI：
10.1016/j.jhazmat.2015.04.060
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发表时间：
2015-10-15
影响因子：
13.6
通讯作者：
Yuan, Shu
中科院分区：
文献类型：
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作者：
Chen, Yang-Er;Cui, Jun-Mei;Yuan, Shu
传统的重金属监测采样方法费时、不方便，而且不能无创、即时地指示污染物。苔藓对重金属很敏感，因此被认为是一种污染指标。然而，目前尚不清楚什么样的生理参数可以快速，无创地指示金属污染。在这里，我们系统地研究了六种重金属对两种苔藓植物的生理参数和光合活性的影响，在水介质或潮湿的土壤表面。我们认为，一个表型与花青素积累模式和褪绿模式和两个叶绿素荧光参数与他们的图像可以大致反映金属物种组，浓度和差异之间的两种苔藓。换句话说，金属污染可以用肉眼粗略估计。两种植物的酶法和非酶法抗氧化能力及光合蛋白质含量均高于鳞叶藓，说明它们对重金属的耐受性不同。无论是抗氧化能力，也没有光合蛋白被发现是理想的指标。该研究为水体、湿地和湿润土壤表面重金属的快速、无创监测提供了新的思路。(C)2015 Elsevier B.V.版权所有。
Traditional sampling for heavy metal monitoring is a time-consuming and inconvenient method, which also does not indicate contaminants non-invasively and instantaneously. Moss is sensitive to heavy metals and is therefore considered a pollution indicator. However, it is unknown what kind physiological parameters can indicate metal contaminations quickly and non-invasively. Here, we systematically examined the effects of six heavy metals on physiological parameters and photosynthetic activities of two moss species grown in aquatic media or moist soil surface. We suggest that a phenotype with anthocyanin accumulation pattern and chlorosis pattern and two chlorophyll fluorescence parameters with their images can roughly reflect metal species groups, concentrations and differences between the two moss species. In other words, metal contaminations could be roughly estimated visually using the naked eye. Enzymatic and non-enzymatic anti-oxidative abilities and photosynthetic protein contents of Eurhynchium eustegium were higher than those of Taxiphyllum taxirameum, indicating their differential metal tolerance. Neither anti-oxidative abilities nor photosynthetic proteins were found to be ideal indicators. This study provides new ideas to monitor heavy metals rapidly and non-invasively in water or on wetland and moist soil surface. (C) 2015 Elsevier B.V. All rights reserved.