PerspectivePlant Biology

Growth by Auxin: When a Weed Needs Acid

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Science  07 Oct 2005:
Vol. 310, Issue 5745, pp. 60-61
DOI: 10.1126/science.1119735

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In his Perspective, Grebe discusses how a plant proton pump residing in intracellular compartments, rather than in the plasma membrane of the cell surface, regulates growth and development. The pump modulates the expression at the plasma membrane of both a transporter for the hormone auxin and another proton pump. These findings open new views on how plants regulate cell wall acidity and hormone transport during development.