The Plant Journal • Vol 82 • No 4
A molecular mechanism that confines the activity pattern of miR165 in <scp>A</scp>rabidopsis leaf primordia
March 2015 • Kiyoshi Tatematsu, Koichi Toyokura, Shunsuke Miyashima, Keiji Nakajima, Kiyotaka Okada
Summary In Arabidopsis leaf primordia, the expression of HD ‐Zip III , which promotes tissue differentiation on the adaxial side of the leaf primordia, is repressed by mi RNA 165/166 (miR165/166). Small RNA s, including mi RNA s, can move from cell to cell. In this study, HD ‐Zip III expression was strikingly repressed by miR165/166 in the epidermis and parenchyma cells on the abaxial side of the leaf primordia compared with those on the adaxial side. We also found that the MIR 165A locus, which was expressed in t…