Plant immunity is modulated by several abiotic factors, and microbiome has emerged as a major biotic driver of plant resistance. Recently, a few studies showed that plants also modify resistance to pests and pathogens in their neighborhood. Several types of neighborhood could be identified depending on the biological processes at play: intraspecific and interspecific competition, kin and stranger recognition, plant-soil feedbacks, and danger signaling. This review highlights that molecules exchanged aboveground and belowground between plants can modulate plant immunity, either constitutively or after damage or attack. An intriguing relationship between allelopathy and immunity has been evidenced and should merit further investigation. Interestingly, most reported cases of modulation of immunity by the neighbors are positive, opening new perspectives for the understanding of natural plant communities as well as for the design of more diverse cultivated systems.

中文翻译：

---

植物免疫力：好篱笆造就好邻居？

植物免疫受多种非生物因素调节，微生物组已成为植物抗性的主要生物驱动因素。最近，一些研究表明，植物还会改变其附近对害虫和病原体的抵抗力。根据发挥作用的生物过程，可以识别几种类型的邻域：种内和种间竞争、亲属和陌生人识别、植物-土壤反馈和危险信号。这篇综述强调植物之间地上和地下交换的分子可以调节植物免疫，无论是组成性的还是在损伤或攻击后。化感作用与免疫之间的有趣关系已得到证实，值得进一步研究。有趣的是，大多数报告的邻居调节免疫力的案例都是积极的，