旱区乡土豆科植物在维系干旱区域生态平衡以及推动农业可持续发展方面具有极为重要的作用。阐明旱区乡土豆科植物根际促生菌(PGPR)特征及应用潜力, 对提升干旱地区植物抗逆性、促进生态修复具有重要价值。通过深入挖掘旱区乡土豆科植物根际促生菌的功能多样性, 借助合成菌群的构建, 可帮助植物抵御干旱、盐碱等非生物胁迫, 修复受损的旱区土壤生态。然而, 目前针对旱区乡土豆科植物PGPR的系统性研究仍显不足, 有待完善。该文围绕我国旱区乡土豆科植物, 探讨了其地理分布及对旱区生态适应的优势, 阐明了豆科植物PGPR抗逆促生机制与提高植物抗逆能力的应用前景。同时, 提出未来应在深入挖掘菌种资源、明确不同干旱区土壤类型对乡土豆科植物适配性以及增强旱区乡土豆科植物PGPR推广应用等方面开展研究。该文对旱区精准构建并运用合成微生物菌群, 提升植物抗逆性, 保障旱区生态与农业的可持续发展, 具有重要的理论与实践价值。

Leguminous plants in arid regions are crucial for maintaining ecological balance and promoting sustainable agricultural development. Clarifying the characteristics and application potential of plant growth-promoting rhizobacteria (PGPR) associated with these legumes is of great value for enhancing plant stress resistance and facilitating ecological restoration in arid areas. By exploring the functional diversity of PGPR in the rhizosphere of arid-region legumes and constructing synthetic microbial communities, it is possible to help plants resist abiotic stresses such as drought and salinity, as well as restore degraded soil ecosystems in arid regions. However, systematic research on PGPR of leguminous plants in arid zones remains insufficient. This review focuses on leguminous plants in arid regions of China, clarifies their geographical distribution and ecological advantages in arid environments, and elucidates the stress resistance and growth-promoting mechanisms of legume PGPR, along with their application prospects in enhancing plant stress tolerance. Furthermore, it suggests that future research should focus on in-depth exploration of microbial resources, clarifying the adaptability of legumes to different soil types in arid regions, and promoting the application of PGPR for legumes in arid areas. This study has significant theoretical and practical value for the precise construction and application of synthetic microbial communities to enhance plant stress resistance and ensure ecological and agricultural sustainability in arid regions.