菌根提高植物耐盐性机理的研究

Mechanism of Enhancing Salt Resistance of Plants by Mycorrhiza

综述了盐胁迫环境下菌根对植物耐盐性的影响,指出了菌根主要通过以下几个方面提高宿主植物的耐盐性:促进植物对K^+的吸收来调节K^+/Na^+平衡,进而维持细胞内离子平衡;增强植物对营养元素的吸收;增强宿主植物对水分的吸收,缓解由盐胁迫引起的生理干旱;调节组织渗透平衡,减少宿主植物对Na^+和Cl^-的吸收;增加宿主植物的抗氧化胁迫能力。

The researches on mycorrhiza improving the salt resistance of plants in recent years have been reviewed .The effect of mycorrhiza on the host plants’ saline tolerance is discussed from the following aspects： increasing K ＋ level and keeping K ＋/Na ＋ balance in the host plants; improving the absorption of nutrients; strengthening moisture absorption to relieve physiological drought caused by salt stress in host plants; adjusting osmotic balance in the host plants ’ tissue to reduce the absorption of Na ＋ and Cl -; improving the ability of antioxidant stress.