The role of plants in the treatment of effluents by constructed wetland (CW) systems is under debate. Here, we review ways in which plants can affect CW processes and suggest two novel functions for plants in CWs. The first is salt phytoremediation by halophytes. We have strong evidence that halophytic plants can reduce wastewater salinity by accumulating salts in their tissues. Our studies have shown that Bassia indica, a halophytic annual, is capable of salt phytoremediation, accumulating sodium to up to 10% of its dry weight. The second novel use of plants in CWs is as phytoindicators of water quality. We demonstrate that accumulation of H2O2, a marker for plant stress, is reduced in the in successive treatment stages, where water quality is improved. It is recommended that monitoring and management of CWs consider the potential of plants as phytoremediators and phytoindicators.
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机译：植物在人工湿地（CW）系统处理废水中的作用尚处于争论之中。在这里，我们回顾了植物可以影响化学武器过程的方式，并提出了化学武器中植物的两种新功能。首先是盐生植物对盐的植物修复作用。我们有充分的证据表明，盐生植物可以通过在组织中积累盐分来降低废水的盐度。我们的研究表明，一年生盐生植物巴西s能够进行盐类植物修复，能够将钠积累至干重的10％。在化武中植物的第二种新颖用途是作为水质的植物指标。我们证明，在改善水质的连续处理阶段中，植物胁迫标记物H 2 O 2 的积聚减少了。建议对化学武器的监测和管理考虑植物作为植物修复剂和植物指示剂的潜力。
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