BACKGROUND Halophytes are better than glycophytes at employing mechanisms to avoid salt injury, but both types of plants can undergo damage due to high soil salinity. Arbuscular mycorrhizal fungi (AMF) can mitigate the damage from salt stress in both halophytes and glycophytes by enhancing salt tolerance and improving energy efficiency. However, variations in mycorrhizal symbiotic efficiency between halophytes and glycophytes were still poorly understood. Therefore, we evaluated the magnitude of AMF effects on plant growth and determined the mechanisms that regulate the growth response of halophytes and glycophytes by performing a meta-analysis of 916 studies (from 182 publications). RESULTS Arbuscular mycorrhizal fungi significantly enhance biomass accumulation, osmolytes synthesis (soluble sugar and soluble protein), nutrients acquisition (nitrogen, phosphorus, and potassium ion), antioxidant enzyme activities (superoxide dismutase and catalase), and photosynthetic capacity (chlorophyll and carotenoid contents, photosynthetic rate, stomatal conductance, and transpiration rate). AMF also substantially decreased sodium ion acquisition and malondialdehyde levels in both halophytes and glycophytes under salt stress conditions. Mycorrhizal halophytes deploy inorganic ions (potassium and calcium ions) and limited organic osmolytes (proline and soluble sugar) to achieve energy-efficient osmotic adjustment and further promote biomass accumulation. Mycorrhizal glycophytes depend on the combined actions of soluble sugar accumulation, nutrients acquisition, sodium ion exclusion, superoxide dismutase elevation, and chlorophyll synthesis to achieve biomass accumulation. CONCLUSIONS Arbuscular mycorrhizal fungi inoculation is complementary to plant function under salt stress conditions, not only facilitating energy acquisition but also redistributing energy from stress defence to growth. Glycophytes are more dependent on AMF symbiosis than halophytes under salt stress conditions.

中文翻译：

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在盐胁迫下，盐生植物和糖类植物与丛枝菌根真菌的相互作用是否有所不同？荟萃分析。

背景技术在避免盐害的机制上，盐生植物优于糖生植物，但是由于高土壤盐分，两种植物都可能遭受破坏。丛枝菌根真菌（AMF）可以通过增强耐盐性和提高能效来减轻盐生植物和糖植物中盐胁迫的损害。然而，盐生植物和糖生植物之间的菌根共生效率变化仍然知之甚少。因此，我们通过对916个研究（来自182个出版物）进行了荟萃分析，评估了AMF对植物生长的影响程度，并确定了调节盐生植物和糖生植物生长反应的机制。结果丛枝菌根真菌显着增强了生物量的积累，渗透物的合成（可溶性糖和可溶性蛋白），营养素获取（氮，磷和钾离子），抗氧化酶活性（超氧化物歧化酶和过氧化氢酶）和光合能力（叶绿素和类胡萝卜素含量，光合速率，气孔导度和蒸腾速率）。在盐胁迫条件下，AMF还显着降低了盐生植物和糖植物中的钠离子获取量和丙二醛水平。菌根盐生植物可利用无机离子（钾和钙离子）和有限的有机渗透剂（脯氨酸和可溶性糖）来实现高能效的渗透调节，并进一步促进生物质的积累。菌根糖植物依赖于可溶性糖积累，养分获取，钠离子排除，超氧化物歧化酶升高和叶绿素合成的综合作用来实现生物量的积累。结论丛枝菌根真菌接种是盐胁迫条件下植物功能的补充，不仅促进能量获取，而且将能量从胁迫防御中重新分配给生长。在盐胁迫条件下，与盐生植物相比，藻类植物对AMF共生的依赖性更大。