Li J., Yang H., Peer W. A., Richter G., Blakeslee J., Bandyopadhyay A., Khodakovskaya M., Richards E. L., Krizek B.
В журнале Science
Год: 2005 Том: 310 Страницы: 121-125
The transport of auxin controls developmental events in plants. Here, we report that in addition to maintaining vacuolar pH, the H+- pyrophosphatase, AVP1, controls auxin transport and consequently auxin-dependent development. AVP1 overexpression results in increased cell division at the onset of organ formation, hyperplasia, and increased auxin transport. In contrast, avp1-1 null mutants have severely disrupted root and shoot development and reduced auxin transport. Changes in the expression of AVP1 affect the distribution and abundance of the P-adenosine triphosphatase and Pinformed 1 auxin efflux facilitator, two proteins implicated in auxin distribution. Thus, AVP1 facilitates the auxin fluxes that regulate organogenesis.
