Journal
PLANT AND CELL PHYSIOLOGY
Volume 50, Issue 3, Pages 652-657Publisher
OXFORD UNIV PRESS
DOI: 10.1093/pcp/pcp006
Keywords
Auxin transport; barren inflorescence2; Maize; PINOID; PIN-FORMED
Categories
Funding
- The National Science Foundation [IBN-0416616, DBI-0501862, MCB-0643845, MCB-0725149, DBI-0606666]
- Cold Spring Harbor Laboratory Association Fellowship
- Div Of Molecular and Cellular Bioscience
- Direct For Biological Sciences [0725149] Funding Source: National Science Foundation
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available