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Plant biology

The force from without

It seems that the epidermis is the cell layer through which growth-promoting plant hormones called brassinosteroids exert their effect on cell expansion — a finding that puts a new perspective on classical views of plant growth.

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Figure 1: Control of plant organ growth by signalling in the epidermis.



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Scheres, B. The force from without. Nature 446, 151–152 (2007).

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