Plants are subjected to diverse biotic and abiotic stresses in life. These can induce changes in transcriptomics and metabolomics, resulting in changes to root and leaf exudates and, in turn, altering the plant-associated microbial community. Emerging evidence demonstrates that changes, especially the increased abundance of commensal microbes following stresses, can be beneficial for plant survival and act as a legacy, enhancing offspring fitness. However, outstanding questions remain regarding the microbial role in plant defense, many of which may now be answered utilizing a novel synthetic community approach. In this article, building on our current understanding on stress-induced changes in plant microbiomes, we propose a ‘DefenseBiome’ concept that informs the design and construction of beneficial microbial synthetic communities for improving fundamental understanding of plant–microbial interactions and the development of plant probiotics.

植物在生活中承受着多种生物和非生物胁迫。这些可以诱导转录组学和代谢组学的变化，从而导致根和叶渗出物的变化，进而改变与植物相关的微生物群落。越来越多的证据表明，变化，尤其是胁迫后共生微生物数量的增加，可能有益于植物生存并成为遗产，从而增强了后代的适应性。然而，关于微生物在植物防御中的作用仍然存在悬而未决的问题，其中许多现在可以通过新颖的合成社区方法得到解答。在本文中，基于我们对胁迫诱导的植物微生物群落变化的当前理解，