Full
Outline
Soil salinization threatens approximately 20% of irrigated cropland globally. Conventional physical and chemical remediation methods are limited by high water consumption, significant costs, and environmental risks. Rhizosphere microorganisms, often termed as the plant's "second genome," enhance plant salinity tolerance through multidimensional synergistic mechanisms, which offering a sustainable and efficient strategy for saline soil amelioration. This review delineates plant salt tolerance mechanisms and systematically elucidates the role of rhizosphere microorganisms in regulating this tolerance, including regulating ion stabilization, maintaining osmotic balance, defensing oxidative stress, modulating phytohormone network, improving rhizosphere microhabitat and activating nutrient element. Additionally, the review further discusses the current applications in main crops, such as rice, wheat, maize, soybean, and vegetables. Meanwhile, to address persistent challenges such as inadequate microbial field stability, pronounced host-microbe interaction specificity, and constraints in technology dissemination, future research should prioritize:deepening the interaction of the "plant genotype-root exudate-microbial function" interaction mechanism; utilizing synthetic biology to design functionally complementary Synthetic Microbial Communities (SynComs); enhancing inoculant stability by integrating materials science; and developing smart agricultural technologies for precise application. These integrated strategies are anticipated to facilitate rhizosphere microbe-mediated technologies for saline-alkali land reclamation and large-scale deployment in sustainable agriculture.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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