Fig. 1 (shortened, full legend in paper): Growth differences between meristem regions underlies gynoecium initiation in Arabidopsis. (A) Schematic top view of the inflorescence showing initiating floral buds at different developmental stages (St) according to Smyth et al. (1990). (B) Time-lapse series capturing carpel primordia establishment from early stage 5 to late stage 6 over 72 h at 24 h intervals. Median sepals were removed. (C) Heat maps of Gaussian curvature at the different stages; the bottom row shows virtual longitudinal sections through the bud along its lateral axis. Increases in positive Gaussian curvature are indicated with white arrows (dark red zones in the top image). The blue arrows indicate a carpel primordium emerging as a lateral protrusion on the floral meristem. (D) Heat map of percentage area expansion between the stages. (E) Heat map of cell divisions between the stages. (F) Heat map of cell sizes at the different stages.
🌸⚖️ RESEARCH ⚖️🌸
Live imaging and hormone manipulation shows how auxin–cytokinin crosstalk drives differential growth at the cellular level in the gynoecium to establish the correct geometry for carpel primordia initiation – Gómez-Felipe et al.
🔗 doi.org/10.1093/jxb/...
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