Arbuscular Mycorrhizal Fungi Can Benefit Heavy Metal Tolerance and Phytoremediation

David Forgy
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引用次数: 14

Abstract

Sites contaminated by heavy metals, such as industrial waste sites, create unwelcoming environments for plant growth. Heavy metals can have a wide range of toxic effects such as replacing essential elements or disrupting enzyme function. While some heavy metals are essential to plant nutrition at low concentrations, high concentrations of any heavy metal(s) has the effect of reducing or preventing plant growth. Despite the obstacles to plant growth, revegetation of these sites is important because wind and water erosion can transport heavy metals from contaminated sites, thereby spreading these potentially toxic pollutants. Phytoremediation techniques which use plants to remediate contaminated soil may provide a solution to problems of revegetation and contamination. Arbuscular mycorrhizal fungi (AMF) may enhance phytoremediation, especially phytoextraction and phytostabilization, by reducing heavy metal stresses on plants, increasing heavy metal uptake, and affecting translocation of metals within plants. This paper provides a review of the effects of AMF colonization on heavy metal tolerance in plants and the potential for utilizing AMF in phytoremediation techniques.

丛枝菌根真菌对重金属的耐受性和植物修复有益
被重金属污染的场所,如工业废料场,为植物生长创造了不受欢迎的环境。重金属具有广泛的毒性作用,如取代必需元素或破坏酶的功能。虽然一些重金属在低浓度下对植物营养至关重要,但任何高浓度的重金属都有减少或阻止植物生长的作用。尽管存在植物生长的障碍,但这些地点的植被恢复很重要,因为风和水的侵蚀可以将重金属从污染地点转移出去,从而传播这些潜在的有毒污染物。利用植物修复污染土壤的植物修复技术可能为植被恢复和污染问题提供解决方案。丛枝菌根真菌(AMF)可能通过减少植物对重金属的胁迫、增加重金属的吸收和影响金属在植物体内的转运来增强植物的修复作用,特别是植物的提取和植物的稳定。本文综述了AMF定殖对植物重金属耐受性的影响,以及AMF在植物修复技术中的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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