Bacillus subtilis is one of the most widely studied plant growth–promoting rhizobacteria. It is able to promote plant growth as well as control plant pathogens through diverse mechanisms, including the improvement of nutrient availability and alteration of phytohormone homeostasis as well as the production of antimicrobials and triggering induced systemic resistance, respectively. Even though its benefits for crop production have been recognized and studied extensively under laboratory conditions, the success of its application in fields varies immensely. It is widely accepted that agricultural application of B. subtilis often fails because the bacteria are not able to persist in the rhizosphere. Bacterial colonization of plant roots is a crucial step in the interaction between microbe and plant and seems, therefore, to be of great importance for its growth promotion and biocontrol effects. A successful root colonization depends thereby on both bacterial traits, motility and biofilm formation, as well as on a signal interplay with the plant. This review addresses current knowledge about plant-microbial interactions of the B. subtilis species, including the various mechanisms for supporting plant growth as well as the necessity for the establishment of the relationship.

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枯草芽孢杆菌是研究最多的植物生长促进根瘤菌之一。它能够通过多种机制促进植物生长并控制植物病原体，包括分别提高营养素利用率和改变植物激素稳态，以及产生抗微生物剂和引发诱导的系统抗性。尽管在实验室条件下已广泛认识到它对农作物生产的益处并进行了广泛研究，但其在田间应用的成功却千差万别。枯草芽孢杆菌的农业应用已被广泛接受通常会失败，因为细菌无法在根际中持久存在。植物根部的细菌定殖是微生物与植物之间相互作用的关键步骤，因此，对于其生长促进和生物防治作用似乎至关重要。因此，成功的根部定植既取决于细菌性状，运动性和生物膜形成，也取决于与植物的信号相互作用。这篇评论解决了目前有关枯草芽孢杆菌物种的植物-微生物相互作用的知识，包括支持植物生长的各种机制以及建立这种关系的必要性。

作者根据知识共享CC0“无保留权利”许可，将作品专用于公共领域，在一定程度上放弃了著作权法规定的他对世界范围内作品的所有权利，包括所有相关和邻近权利法律允许。