miRNA介导植物-微生物互作中的调控作用及其研究进展

Advances of miRNA-mediated regulatory roles in plant-microbe interaction

摘要:

微生物与植物之间存在错综复杂的双向交流和串扰，植物与病原微生物互作直接影响寄主植物的生存状况，而植物和益生微生物互作则有利于宿主的生长和健康，共生微生物也会从中受益。不管是病原微生物还是有益微生物进入植物体内，植物miRNA都会迅速做出响应，同时微生物也可以产生miRNA样RNA （miRNA-like RNA，milRNA）影响植物健康，可见miRNA （或milRNA）是植物与微生物互作过程中迅速响应的重要媒介分子，其内在机制研究近年来取得了许多进展。文中概述了植物-病原微生物、植物-益生微生物互作中miRNA的调控作用，重点阐述了植物miRNA在植物-病原微生物互作过程中对寄主植物抗病性的调控作用和植物-益生微生物互作过程中对宿主植物生长发育及代谢的调控，以及真菌milRNA对寄主植物的跨界调控作用。

Abstract:

There are many bidirectional communication and crosstalk between microbes and host plants. The plant-pathogen interaction directly affects the survival of host plants, while the interaction between plants and their probiotics benefits both. Plant miRNA responds quickly to pathogenic or beneficial microbes when they enter the plant tissues, while microbes also produce miRNA-like RNA (milRNA) to affect plant health. These means miRNA or milRNA is an important fast-responding molecular mediator in plant-microbe interactions, and these internal mechanisms have been better understood in recent years. This review summarized the regulatory roles of miRNA in plant-pathogens and plant-probiotics interaction. The regulatory role of miRNA in disease resistance of host plants during plant-pathogens interaction, and the regulatory role of miRNA in promoting host growth and development during plant-probiotics interaction, as well as the cross-kingdom regulatory role of milRNA in host plants, were discussed in-depth.