TY - JOUR
T1 - Plant Science
T2 - Arabidopsis H+-PPase AVP1 regulates auxin-mediated organ development
AU - Li, Jisheng
AU - Yang, Haibing
AU - Peer, Wendy Ann
AU - Richter, Gregory
AU - Blakeslee, Joshua
AU - Bandyopadhyay, Anindita
AU - Titapiwantakun, Boosaree
AU - Undurraga, Soledad
AU - Khodakovskaya, Mariya
AU - Richards, Elizabeth L.
AU - Krizek, Beth
AU - Murphy, Angus S.
AU - Gilroy, Simon
AU - Gaxiola, Roberto
PY - 2005/10/7
Y1 - 2005/10/7
N2 - 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.
AB - 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.
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U2 - 10.1126/science.1115711
DO - 10.1126/science.1115711
M3 - Article
C2 - 16210544
AN - SCOPUS:26444525682
SN - 0036-8075
VL - 310
SP - 121
EP - 125
JO - Science
JF - Science
IS - 5745
ER -