It is well established that plant hormones such as auxins, cytokinins (CKs), and abscisic acid (ABA) not only govern important plant physiological traits but are key players in plant–microbe interactions. A poorly appreciated fact, however, is that both microbes and animals produce and perceive plant hormones and their mimics. Moreover, dietary plant hormones impact on human physiological process such as glucose assimilation, inflammation, and cell division. This leads us to wonder whether plant hormones could ensure functions in microbes per se as well as in animal–microbe interactions. We propose here and explore the hypothesis that plant hormones play roles in animal–microbiota relationships, with consequences for human health.

众所周知，植物激素，例如植物生长素，细胞分裂素（CKs）和脱落酸（ABA）不仅控制着重要的植物生理性状，而且是植物与微生物相互作用的关键因素。然而，一个鲜为人知的事实是，微生物和动物都会产生并感知植物激素及其模拟物。此外，饮食中的植物激素会影响人体的生理过程，例如葡萄糖同化，炎症和细胞分裂。这使我们想知道植物激素是否可以确保微生物本身以及动物与微生物之间的相互作用。我们在这里提出并探索一种假设，即植物激素在动物与微生物群的关系中发挥作用，对人类健康产生影响。