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Nature 426, 132-135 (13 November 2003) | doi:10.1038/426132b
Plant development: An axis of auxin
Stefan Kepinski1 & Ottoline Leyser
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Abstract
Embryos have two distinct ends, which become apparent early on. Quite how this initial polarity is sustained in plant embryos has been unclear. Step forward the agent provocateur of plant development — auxin.
In multicellular organisms, different kinds of cell are specialized for different tasks — reproduction, say, or light perception. Clearly, the proper functioning of these organisms requires that the various cell types are positioned correctly relative to one another.
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