We assessed the effects of arbuscular mycorrhizal fungi (AMF) Rhizophagus irregularis inoculation on salt stress tolerance in roots of the drought-tolerant plant Elaeagnus angustifolia. We studied a plant growth index, spore density and hyphal length density of AMF, the Na⁺ contents and ultrastructure of root cells, as well as rhizosphere soil enzyme activities of mycorrhizal and non-mycorrhizal E. angustifolia seedlings under different salt stress. Under salt stress, growth of E. angustifolia with mycorrhizal inoculation was higher than that of non-inoculated treatments. The spore density and hyphal length density decreased significantly under salt stress in rhizosphere soil of mycorrhizal E. angustifolia seedlings (p < 0.05). The root cells of E. angustifolia seedlings inoculated with R. irregularis at 300 mmol L⁻¹ salt had more organelles, greater integrity, and lower root Na⁺ contents than those of non-inoculated seedlings. In addition, the results showed notably higher activities of catalase, phosphatase, urease and saccharase in rhizosphere soil of the mycorrhizal seedlings in response to salinity compared to those of the non-mycorrhizal seedlings. Therefore, AMF inoculation could enhance salt stress tolerance in roots of E. angustifolia.

我们评估了丛枝菌根真菌（AMF）不规则根瘤菌接种对耐旱植物沙枣（Elaeagnus angustifolia）根部耐盐胁迫的影响。我们研究了在不同盐胁迫下，菌根和非菌根E. angustifolia幼苗的植物生长指数，AMF的孢子密度和菌丝长度密度，根细胞的Na ⁺含量和超微结构以及根际土壤酶活性。在盐胁迫下，菌根接种后的金黄色葡萄球菌的生长高于未接种的处理。盐胁迫下菌根根际土壤的孢子密度和菌丝长度密度明显下降。E. angustifolia幼苗（p  <0.05）。与未接种的幼苗相比，接种不规则红锈菌（浓度为300 mmol L ^-1）的海枣幼苗的根细胞具有更多的细胞器，更强的完整性和更低的根Na ⁺含量。此外，结果表明，与非菌根幼苗相比，菌根幼苗的根际土壤中的过氧化氢酶，磷酸酶，脲酶和蔗糖酶活性显着提高了盐度。因此，接种AMF可以增强马尾草根的耐盐胁迫能力。