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Phantom phenotypes and covert connections in plant stem cell signaling Zachary Nimchuk All plant growth is derived from stem cell populations that determine the rate of cell renewal and differentiation in different tissues. Stem cell populations in plants are controlled by cell-to-cell signaling networks that govern their establishment, size, specific identity, and differentiation status. Receptor kinase signaling pathways and their peptide ligands play a prominent role in this process, and integrate closely with hormone signaling networks. My lab seeks to understand how these signaling networks control stem cell function, and how these pathways have been shaped by evolution and domestication to alter plant form and function. In this talk, I will give an overview of some of the questions we would like to solve, some of the approaches we are taking and some of the things we have discovered in the process.