Small RNAs (sRNAs), mainly including miRNAs and siRNAs, are ubiquitous in eukaryotes. sRNAs mostly negatively regulate gene expression via (post-)transcriptional gene silencing through DNA methylation, mRNA cleavage, or translation inhibition. The mechanisms of sRNA biogenesis and function in diverse biological processes, as well as the interactions between sRNAs and environmental factors, like (a)biotic stress, have been deeply explored. Phytohormones are central in the plant’s response to stress, and multiple recent studies highlight an emerging role for sRNAs in the direct response to, or the regulation of, plant hormonal pathways. In this review, we discuss recent progress on the unraveling of crossregulation between sRNAs and nine plant hormones.

小RNA（sRNA），主要包括miRNA和siRNA，在真核生物中无处不在。sRNA大多通过DNA甲基化，mRNA切割或翻译抑制作用（转录后）沉默而对基因表达产生负调控。sRNA的生物发生机制和在各种生物过程中的功能，以及sRNA与环境因素（如生物胁迫）之间的相互作用已得到了深入的研究。植物激素在植物对胁迫的反应中起着关键作用，最近的多项研究强调了sRNA在直接响应或调节植物激素途径中的新兴作用。在这篇综述中，我们讨论了揭开sRNA与9种植物激素之间的交叉调控的最新进展。