Intercellular communication in plants coordinates cellular functions during growth and development, and in response to environmental cues. RNAs figure prominently among the mobile signaling molecules used. Many hundreds of RNA species move over short and long distances, and can be mutually exchanged in biotic interactions. Understanding the specificity determinants of RNA mobility and the physiological relevance of this phenomenon are areas of active research. Here, we highlight the recent progress in our knowledge of small RNA and messenger RNA movement. Particular emphasis is given to novel insight into the specificity determinants of messenger RNA mobility, the role of small RNA movement in development, and the specificity of RNA exchange in plant-plant and plant-microbe interactions.

植物中的细胞间通讯协调生长和发育过程中的细胞功能，并响应环境提示。在使用的移动信号分子中，RNA占主导地位。数百种RN​​A物种可以短距离或长距离移动，并且可以通过生物相互作用相互交换。理解RNA迁移的特异性决定因素和这种现象的生理相关性是积极研究的领域。在这里，我们重点介绍了小RNA和信使RNA运动的最新进展。特别强调对信使RNA迁移性的决定因素，小RNA移动在发育中的作用以及RNA交换在植物-植物和植物-微生物相互作用中的特异性的新见解。