Models that generate tandem alignments of cell polarities are more readily compatible with the formation of PIN1 polarity patterns in plant leaf buds than the most widely accepted “up-the-gradient” model.

Comparative genetics between distant plant species shows that for the PIN auxin transport proteins differential membrane and tissue-level accumulation, transport activity, and interaction result in different functional properties in the shoot post transcription.

Genetic modulation in patterns of tissue conflict play a major role in the development and evolution of shape diversity.

Rhythmic centrifugal waves of auxin traveling through the tissue provides high definition positional information to cells that is not only spatial but also temporal.

Leaf position, shape and orientation are pre-patterned by cell type boundaries in the shoot meristem.

GNOM controls both auxin transport and auxin signaling to coordinate tissue cell polarity during vein patterning in plants.

Two protein kinases are required to activate auxin efflux transporters from plants.

Top-bottom patterning of leaves is not specified by an asymmetry in the distribution of the plant hormone auxin, in contrast to a previous proposal.

Mechanical stress promotes the expression of the homeobox gene and meristem master regulator STM, synergistically and independently from auxin depletion.

The spatial-temporal computer model of plant root meristem combines biomechanics and biochemical scales to reveal design principles underlying cell polarity and anisotropic growth during root development.