Table 2.

MicroRNAs related to trichome development in plants

MicroRNAs	Regulation	Functional description	References
miR156	Negative	miR156-targeted SPL transcription factors, overexpression of a mimicry target of miR156 significantly increases the SPLs transcripts and decreases the density of stem trichomes.	[95]
miR171	Negative	miR171-targeted LOM1, LOM2, and LOM3 regulating the SPL activity. Overexpression of miR171 led to decreased trichome density on stems and floral organs.	[96]
miR319a	Positive	miR319a-targeted TCPs, overexpression of miR319a decreased transcription levels of TCPs and significantly elevated leaf trichome density in transgenic poplar.	[97]