NDLI: The interaction of two homeobox genes, BREVIPEDICELLUS and PENNYWISE, regulates internode patterning in the Arabidopsis inflorescence.

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The interaction of two homeobox genes, BREVIPEDICELLUS and PENNYWISE, regulates internode patterning in the Arabidopsis inflorescence.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Smith, Harley M. S. Hake, Sarah
Description	Country affiliation: United States Author Affiliation: Smith HM ( Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.)
Abstract	Plant architecture results from the activity of the shoot apical meristem, which initiates leaves, internodes, and axillary meristems. KNOTTED1-like homeobox (KNOX) genes are expressed in specific patterns in the shoot apical meristem and play important roles in plant architecture. KNOX proteins interact with BEL1-like (BELL) homeodomain proteins and together bind a target sequence with high affinity. We have obtained a mutation in one of the Arabidopsis BELL genes, PENNYWISE (PNY), that appears phenotypically similar to the KNOX mutant brevipedicellus (bp). Both bp and pny have randomly shorter internodes and display a slight increase in the number of axillary branches. The double mutant shows a synergistic phenotype of extremely short internodes interspersed with long internodes and increased branching. PNY is expressed in inflorescence and floral meristems and overlaps with BP in a discrete domain of the inflorescence meristem where we propose the internode is patterned. The physical association of the PNY and BP proteins suggests that they participate in a complex that regulates early patterning events in the inflorescence meristem.
File Format	HTM / HTML
ISSN	10404651
e-ISSN	1531298X
Journal	THE PLANT CELL ONLINE
Issue Number	8
Volume Number	15
Language	English
Publisher	American Society of Plant Biologists
Publisher Date	2003-08-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Botany Arabidopsis Growth & Development Genetics Genes, Homeobox Genes, Plant Amino Acid Sequence Anatomy & Histology Body Patterning Dna, Plant Gene Expression Regulation, Developmental Gene Expression Regulation, Plant In Situ Hybridization Meristem Cytology Molecular Sequence Data Mutation Phenotype Sequence Homology, Amino Acid Research Support, U.s. Gov't, Non-p.h.s. Research Support, U.s. Gov't, P.h.s.
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science

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