BARREN INFLORESCENCE2 interaction with zmPIN1a suggests a role in auxin transport during maize inflorescence development

Andrea Skirpan; Angela Hendrickson Culler; Andrea Gallavotti; David Jackson; Jerry D. Cohen; Paula McSteen

doi:10.1093/pcp/pcp006

BARREN INFLORESCENCE2 interaction with zmPIN1a suggests a role in auxin transport during maize inflorescence development

Andrea Skirpan, Angela Hendrickson Culler, Andrea Gallavotti, David Jackson, Jerry D. Cohen, Paula McSteen

Horticultural Science

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Polar auxin transport, mediated by the PIN-FORMED (PIN) class of auxin effl ux carriers, controls organ initiation in plants. In maize, BARREN INFLORESCENCE2 (BIF2) encodes a serine/threonine protein kinase co-orthologous to PINOID (PID), which regulates the subcellular localization of AtPIN1 in Arabidopsis. We show that BIF2 phosphorylates ZmPIN1a, a maize homolog of AtPIN1, in vitro and regulates ZmPIN1a subcellular localization in vivo, similar to the role of PID in Arabidopsis. In addition, bif2 mutant infl orescences have lower auxin levels later in development. We propose that BIF2 regulates auxin transport through direct regulation of ZmPIN1a during maize infl orescence development.

Original language	English (US)
Article number	pcp006
Pages (from-to)	652-657
Number of pages	6
Journal	Plant and Cell Physiology
Volume	50
Issue number	3
DOIs	https://doi.org/10.1093/pcp/pcp006
State	Published - Apr 2009

Bibliographical note

Funding Information:
The National Science Foundation (IBN-0416616 to P.M., DBI-0501862 to D.J., MCB-0643845, MCB-0725149 and DBI-0606666 to J.D.C.); a Cold Spring Harbor Laboratory Association Fellowship (to A.G.)

Keywords

Auxin transport
Barren infl orescence2
Maize
PIN-FORMED
PINOID

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title = "BARREN INFLORESCENCE2 interaction with zmPIN1a suggests a role in auxin transport during maize inflorescence development",

abstract = "Polar auxin transport, mediated by the PIN-FORMED (PIN) class of auxin effl ux carriers, controls organ initiation in plants. In maize, BARREN INFLORESCENCE2 (BIF2) encodes a serine/threonine protein kinase co-orthologous to PINOID (PID), which regulates the subcellular localization of AtPIN1 in Arabidopsis. We show that BIF2 phosphorylates ZmPIN1a, a maize homolog of AtPIN1, in vitro and regulates ZmPIN1a subcellular localization in vivo, similar to the role of PID in Arabidopsis. In addition, bif2 mutant infl orescences have lower auxin levels later in development. We propose that BIF2 regulates auxin transport through direct regulation of ZmPIN1a during maize infl orescence development.",

keywords = "Auxin transport, Barren infl orescence2, Maize, PIN-FORMED, PINOID",

author = "Andrea Skirpan and Culler, {Angela Hendrickson} and Andrea Gallavotti and David Jackson and Cohen, {Jerry D.} and Paula McSteen",

note = "Funding Information: The National Science Foundation (IBN-0416616 to P.M., DBI-0501862 to D.J., MCB-0643845, MCB-0725149 and DBI-0606666 to J.D.C.); a Cold Spring Harbor Laboratory Association Fellowship (to A.G.)",

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AU - Culler, Angela Hendrickson

AU - Gallavotti, Andrea

AU - Jackson, David

AU - Cohen, Jerry D.

AU - McSteen, Paula

N1 - Funding Information: The National Science Foundation (IBN-0416616 to P.M., DBI-0501862 to D.J., MCB-0643845, MCB-0725149 and DBI-0606666 to J.D.C.); a Cold Spring Harbor Laboratory Association Fellowship (to A.G.)

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AB - Polar auxin transport, mediated by the PIN-FORMED (PIN) class of auxin effl ux carriers, controls organ initiation in plants. In maize, BARREN INFLORESCENCE2 (BIF2) encodes a serine/threonine protein kinase co-orthologous to PINOID (PID), which regulates the subcellular localization of AtPIN1 in Arabidopsis. We show that BIF2 phosphorylates ZmPIN1a, a maize homolog of AtPIN1, in vitro and regulates ZmPIN1a subcellular localization in vivo, similar to the role of PID in Arabidopsis. In addition, bif2 mutant infl orescences have lower auxin levels later in development. We propose that BIF2 regulates auxin transport through direct regulation of ZmPIN1a during maize infl orescence development.

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BARREN INFLORESCENCE2 interaction with zmPIN1a suggests a role in auxin transport during maize inflorescence development

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Keywords

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