Abbasi Sakineh
Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran.
Front Plant Sci. 2023 Jun 9;14:1074279. doi: 10.3389/fpls.2023.1074279. eCollection 2023.
Phosphorus (P) is one of the essential minerals for many biochemical and physiological responses in all biota, especially in plants. P deficiency negatively affects plant performance such as root growth and metabolism and plant yield. Mutualistic interactions with the rhizosphere microbiome can assist plants in accessing the available P in soil and its uptake. Here, we provide a comprehensive overview of plant-microbe interactions that facilitate P uptake by the plant. We focus on the role of soil biodiversity in improved P uptake by the plant, especially under drought conditions. P-dependent responses are regulated by phosphate starvation response (PSR). PSR not only modulates the plant responses to P deficiency in abiotic stresses but also activates valuable soil microbes which provide accessible P. The drought-tolerant P-solubilizing bacteria are appropriate for P mobilization, which would be an eco-friendly manner to promote plant growth and tolerance, especially in extreme environments. This review summarizes plant-microbe interactions that improve P uptake by the plant and brings important insights into the ways to improve P cycling in arid and semi-arid ecosystems.
磷（P）是所有生物群落，尤其是植物中许多生化和生理反应所必需的矿物质之一。磷缺乏会对植物性能产生负面影响，如根系生长、新陈代谢和植物产量。与根际微生物群的共生相互作用可以帮助植物获取土壤中可利用的磷及其吸收。在这里，我们全面概述了促进植物吸收磷的植物-微生物相互作用。我们重点关注土壤生物多样性在改善植物磷吸收方面的作用，特别是在干旱条件下。磷依赖性反应受磷饥饿反应（PSR）调控。PSR不仅调节植物在非生物胁迫下对磷缺乏的反应，还激活能提供可利用磷的有价值土壤微生物。耐旱解磷细菌适合磷的活化，这将是促进植物生长和耐受性的一种生态友好方式，尤其是在极端环境中。本综述总结了改善植物磷吸收的植物-微生物相互作用，并为改善干旱和半干旱生态系统中磷循环的方法带来了重要见解。
