Principles of Plant Development
• The fate of a plant cell is determined largely by its posiIon,
not its lineage (clonal history).
• Development is controlled by networks of interacIng genes
(transcripIonal control and epigeneIc control).
• Development is ogen regulated by cell to cell signaling. This
can be due to actual contact, or movement of hormones
(small molecules like auxin and gibberellin), or movement
of proteins
• TranscripIon factors: proteins that regulate genes by
binding to their promoters. Determine cell, Issue, and
organ idenIty.
• Protein kinases and protein phosphatases (proteins that
add or remove phosphate groups from other proteins) are
involved in development and general metabolic regulaIon
(post-translaIonal control)