Wang Xiujie, Li Zhe, Li Qi, Hu Zhenqi
School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China.
School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24061, USA.
Plants (Basel). 2025 May 21;14(10):1558. doi: 10.3390/plants14101558.
Global agricultural productivity and ecosystem sustainability face escalating threats from multiple abiotic stresses, particularly heavy metal contamination, drought, and soil salinization. In this context, developing effective strategies to enhance plant stress tolerance has emerged as a critical research frontier. Phosphate-solubilizing microorganisms (PSMs) have garnered significant scientific attention due to their capacity to convert insoluble soil phosphorus into plant-available forms through metabolite production, and concurrently exhibiting multifaceted plant growth-promoting traits. Notably, PSMs demonstrate remarkable potential in enhancing plant resilience and productivity under multiple stress conditions. This review article systematically examines current applications of PSMs in typical abiotic stress environments, including heavy metal-polluted soils, arid ecosystems, and saline-alkaline lands. We comprehensively analyze the stress-alleviation effects of PSMs and elucidate their underlying mechanisms. Furthermore, we identify key knowledge gaps and propose future research directions in microbial-assisted phytoremediation and stress-mitigation strategies, offering novel insights for developing next-generation bioinoculants and advancing sustainable agricultural practices in challenging environments.
全球农业生产力和生态系统可持续性面临来自多种非生物胁迫的不断升级的威胁，特别是重金属污染、干旱和土壤盐碱化。在此背景下，制定有效的策略来提高植物的胁迫耐受性已成为一个关键的研究前沿。解磷微生物（PSMs）因其能够通过代谢产物的产生将不溶性土壤磷转化为植物可利用的形式，并同时表现出多方面促进植物生长的特性而受到了广泛的科学关注。值得注意的是，PSMs在增强植物在多种胁迫条件下的恢复力和生产力方面具有显著潜力。这篇综述文章系统地研究了PSMs在典型非生物胁迫环境中的当前应用，包括重金属污染土壤、干旱生态系统和盐碱地。我们全面分析了PSMs的胁迫缓解效应，并阐明了其潜在机制。此外，我们确定了关键的知识空白，并提出了微生物辅助植物修复和胁迫缓解策略的未来研究方向，为开发下一代生物接种剂和推进具有挑战性环境中的可持续农业实践提供了新的见解。
