BARREN INFLORESCENCE2 Interaction with ZmPIN1a Suggests a Role in Auxin Transport During Maize Inflorescence Development

Skirpan, A., Culler, A. H., Gallavotti, A., Jackson, D., Cohen, J. D., McSteen, P. (March 2009) BARREN INFLORESCENCE2 Interaction with ZmPIN1a Suggests a Role in Auxin Transport During Maize Inflorescence Development. Plant and Cell Physiology, 50 (3). pp. 652-657. ISSN 0032-0781

URL: http://www.ncbi.nlm.nih.gov/pubmed/19153156
DOI: 10.1093/pcp/pcp006

Abstract

Polar auxin transport, mediated by the PIN-FORMED (PIN) class of auxin efflux 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 AtPIN1in 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 inflorescences have lower auxin levels later in development. We propose that BIF2 regulates auxin transport through direct regulation of ZmPIN1a during maize inflorescence development.

Item Type: Paper
Uncontrolled Keywords: Auxin transport barren inflorescence2 Maize PINOID PIN-FORMED PIN PROTEINS ARABIDOPSIS KINASE ARCHITECTURE MERISTEM EFFLUX TISSUE PLANTS
Subjects: organism description > plant > maize
organs, tissues, organelles, cell types and functions > tissues types and functions > inflorescence
organs, tissues, organelles, cell types and functions
organism description > plant
organs, tissues, organelles, cell types and functions > tissues types and functions
CSHL Authors:
Communities: CSHL labs > Jackson lab
Depositing User: Matt Covey
Date: March 2009
Date Deposited: 21 Feb 2013 17:56
Last Modified: 21 Feb 2013 17:56
Related URLs:
URI: http://repository.cshl.edu/id/eprint/27338

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