Studies of moss reproductive development indicate that auxin biosynthesis in apical stem cells may constitute an ancestral function for focal growth control

What is it about?

The growth of all land plants is tightly regulated by the hormone auxin. We have studied auxin biosynthesis in a moss separated from flowering plants by 450 million years of evolution. Our findings suggest that the synthesis of auxin in apical stem cells may have contributed to the evolution of focal growth in land plants.

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