三种湿地植物的二甲基甲酸的吸收,积累和降解
Yaocheng Fan1, Tiancui Li2, Zihan Zhang3
1China Communications Construction Company Second Harbor Consultants Co., Ltd, Wuhan 430060, China; Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430070, China
概括
树有效地从水中去除二甲 (DBP),在根中积累并通过特定的酶降解. 这表明其在建筑湿地中具有植物修复的潜力.
科学领域:
- 环境科学 环境科学
- 植物生物学 植物生物学
- 生物修复是一种生物修复.
背景情况:
- 二甲基甲酸盐 (DBP) 是一种常见的环境污染物.
- 湿地植物越来越多地研究它们在废水处理方面的潜力.
- 了解植物吸收和降解机制对于有效的植物修复至关重要.
研究的目的:
- 调查三种湿地植物 (Lythrum salicaria,Thalia dealbata和Canna indica) 吸收和降解二甲基甲酸盐 (DBP).
- 为了确定参与DBP降解的潜在酶.
- 评估这些工厂是否适用于DBP污染废水的植物修复.
主要方法:
- 在水培中种植Lythrum salicaria,Thalia dealbata和Canna indica.这些植物.
- 暴露于0.5mg/L度的迪布甲酸 (DBP) 的情况.
- 在植物组织 (根,茎,叶) 中分析DBP及其代谢物 (单-n-丁甲酸,甲酸).
- 酶活性测定碳素化酶,多氧化酶和超氧化物脱化酶.
主要成果:
- 莱斯沙利卡里亚和Canna indica没有显著增长抑制,而Thalia dealbata的增长被DBP抑制.
- 在这三种植物的根部,DBP度最高,其中Lythrum salicaria积累最多.
- 菌的组织中含有显著更高度的单-n-丁酸和酸,表明有效的降解.
结论:
- 树 (Lythrum salicaria) 具有很高的DBP吸收和降解能力,使其成为植物修复的有希望的候选者.
- 碳氧化酶,多氧化酶和超氧化物脱酶可能是参与这些湿地植物DBP分解的关键酶.
- 在建造的湿地中,Lythrum salicaria可以有效地用于处理DBP污染的废水.
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