丛枝菌根真菌在植物修复砷污染土壤中的作用

丛枝菌根真菌能增强植物对矿质元素的吸收、提高植物的抗逆性、增强抗病性、改善植物根际微环境,减轻重金属对植物的毒害,影响植物对重金属的吸收和转运,在重金属污染土壤的植物修复中显示出极大的应用潜力。近年来,As污染已成为全球非常突出且急需解决的环境问题之一,对As污染土壤的生物修复也因而成为研究热点。本文主要从丛枝菌根真菌改变土壤pH和酶活性、增强植物对As的耐性和影响植物对As的吸收方面综述了丛枝菌根在As污染土壤修复中应用的研究进展,揭示出菌根应用在As污染土壤中的作用潜力和研究方向。

Roles of arbuscular mycorrhizal in plant remediation of arsenic-contaminated soil

Arbuscular mycorrhizal (AM ) fungi can enhance the uptake of nutrition of plants, promote the stress resistance of plants, improve the micro-ecological environment of plant rhizosphere, and reduce the poison of heavy metals to plants, influence the uptake and transport of heavy metals by plants, thus have great application potentials in the phytoremediation of metal-contaminated soil. In recent years, arsenic (As) pollution of soil has become into a major public concern in many countries and the bio-remediation of As-polluted soil has become a hot research topic. This paper reviews the research advances of AM in remediating As-polluted soil from the aspects of AM changing soil pH and enzyme activity, enhancing As resistance of plant and impacting As uptake, and also discloses the application potentials and research directions of AM in As-polluted soil.