The study of plant–microbe interactions and the characterization of plant-associated microbiota has been the focus of plant researchers in the last decades due to its importance for plant health in natural conditions. Here, I explore the persistent core microbiota associated with different plant species and across different environments by performing a meta-analysis of publicly available datasets. Intra-specific analyses revealed that diverse plant genotypes growing in similar habitats interact with a common set of microbial groups but that some of these core groups are species- or environment-specific. Furthermore, interspecific meta-analysis demonstrates the conservation of seven bacterial orders across diverse photosynthetic organisms, including microalgae, suggesting a conserved capacity for interaction with these core microbes throughout evolutionary history. However, the specific functions of these core members and whether these functions are conserved across hosts remain largely unexplored. I therefore discuss the importance of understanding the roles of the core microbiota and propose future research directions, including the exploration of microbial interactions across different kingdoms. By investigating the core microbiota and its functions, it will be possible to leverage this knowledge for sustainable agricultural management and conservation goals.

植物与微生物相互作用的研究以及植物相关微生物群的表征由于其对自然条件下植物健康的重要性，在过去几十年中一直是植物研究人员关注的焦点。在这里，我通过对公开数据集进行荟萃分析，探索与不同植物物种和不同环境相关的持久核心微生物群。种内分析表明，生长在相似栖息地的不同植物基因型与一组常见的微生物群相互作用，但其中一些核心群是物种或环境特异性的。此外，种间荟萃分析表明，包括微藻在内的不同光合生物体中七个细菌目的保守性，表明在整个进化史上与这些核心微生物相互作用的能力是保守的。然而，这些核心成员的具体功能以及这些功能是否在宿主之间保守仍然很大程度上未被探索。因此，我讨论了了解核心微生物群作用的重要性，并提出了未来的研究方向，包括探索不同领域的微生物相互作用。通过研究核心微生物群及其功能，将有可能利用这些知识实现可持续农业管理和保护目标。