内生真菌提高禾草耐重金属胁迫的研究进展

随着全球工业化和地球化学活动的日益频繁, 地表和地下水中重金属污染已经成为一个严重的环境问题。植物通过体内存在的内生真菌提高对重金属的耐受性进行修复。本研究围绕重金属胁迫对禾草的影响、禾草对重金属胁迫的响应以及内生真菌提高禾草耐重金属的机理等方面对内生真菌提高禾草耐重金属胁迫的研究进展方面进行了综述, 以期为禾草耐重金属胁迫品种的选育和植物修复机制的研究, 提供新的方法手段和理论基础。

Research progress of improved resistance of the grass to the heavy metal stress by endophyte

Heavy metal contamination of the land surface and groundwater due to increased industrialization and geochemical activities is a serious environmental problem. Plants can improve phytoremediation by endophyte fungi to enhance the tolerance to heavy metal stress. The present paper summarized the research progress of the improved tolerance of the grasses to the heavy metal stress from the following aspects which included the effects of heavy metals on grasses consist of germination rates, total biomass and root activity, response of physiology and biochemistry of grasses to heavy metal stress and resistance or tolerance mechanisms of the endophyte to improve the resistance to the heavy metal stress comprised antioxidant enzymes, antioxidant materials, heavy metal chelate and phytoremediation. This review put forward a new method for heavy metal tolerance and better phytoremediation breeding by endophyte.