... factor expressed in narrow stripes at the leaf margins, flanking the distal side of future leaflet primordia, and at the boundaries between the SAM and leaf primordia. Leaf-specific overexpression of the microRNA miR164 , a negative regulator of GOB -like genes,also leads to loss of secondary-leaflet...

... manner. This hypothesis is tested here by studying the effects of elimination of all three members of the MIR164 family from Arabidopsis . It was found that a loss of miR164 activity leads to a severe disruption of shoot development,in contrast to the effect of mutation in any single MIR164 gene...