Control of proliferation in the haploid meristem by CLE peptide signaling in Marchantia polymorpha
Fig 2
Gain-of-function phenotypes of MpCLE1.
Morphology of 14-day-old M. polymorpha plants grown from gemmae. (A and B) Overall morphology of (A) wild type (Tak-1) and (B) MpEF1α promoter-driven MpCLE1-overexpression line. (C) Area of thalli (mean ± s.d.). Two independent transgenic lines were used for quantification. Asterisks indicate a significant difference from WT in Weltch’s t-test (p < 0.001, n = 18). (D) Schematic diagram of section planes in apical notch. Longitudinal sections of apical notches in (E) wild type (Tak-1) and (F) the MpCLE1-overexpression line. Arrows, red and black arrowheads, and brackets indicate developing gemmae cups, apical cells, developing air chambers closest to the apical cell, and proliferative region of meristem, respectively. Scale bars = 1cm in (A and B), 200 μm in (E, F).