Agathokleous Evgenios, Calabrese Edward J, Veresoglou Stavros D
Key Laboratory of Ecosystem Carbon Source and Sink, China Meteorological Administration (ECSS-CMA), School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
Department of Public Health, Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA.
Trends Plant Sci. 2025 May;30(5):515-525. doi: 10.1016/j.tplants.2024.11.019. Epub 2024 Dec 29.
Our understanding of the physiological mechanisms of the plant hormetic response to countless environmental contaminants is rapidly advancing. However, the microbiome is a critical determinant of plant responses to stressors, thus possibly influencing hormetic responses. Here, we review the otherwise neglected role of microbes in shaping plant stimulation by subtoxic concentrations of contaminants and vice versa. Numerous contaminants at subtoxic levels enhance microorganisms and proliferate symbionts, such as mycorrhizae and other plant beneficial microbes, leading to both direct and indirect improvements in plant physiological performance. Microbial symbiosis facilitates nutrient uptake by plants, indicating an important contribution of symbionts to phytostimulation under subtoxic contamination. We also discuss the mechanisms and implications of the stimulation of plant-microbe systems by subtoxic contaminants.
我们对植物对无数环境污染物产生应激反应的生理机制的理解正在迅速发展。然而，微生物群是植物对压力源作出反应的关键决定因素，因此可能影响应激反应。在这里，我们回顾了微生物在塑造植物对亚毒性浓度污染物的刺激反应方面被忽视的作用，反之亦然。许多亚毒性水平的污染物会增强微生物并使共生体（如菌根和其他对植物有益的微生物）增殖，从而直接或间接地改善植物的生理性能。微生物共生促进植物对养分的吸收，这表明共生体在亚毒性污染下对植物刺激有重要贡献。我们还讨论了亚毒性污染物对植物-微生物系统刺激的机制及影响。
