Establishing leaf polarity: the role of small RNAs and positional signals in the shoot apex

Chitwood, D. H., Guo, M., Nogueira, F. T. S., Timmermans, M. C. P. (March 2007) Establishing leaf polarity: the role of small RNAs and positional signals in the shoot apex. Development, 134 (5). pp. 813-23. ISSN 0950-1991 (Print)

URL: http://www.ncbi.nlm.nih.gov/pubmed/17251271
DOI: 10.1242/dev.000497

Abstract

The flattening of leaves results from the juxtaposition of upper (adaxial) and lower (abaxial) domains in the developing leaf primordium. The adaxial-abaxial axis reflects positional differences in the leaf relative to the meristem and is established by redundant genetic pathways that interpret this asymmetry through instructive, possibly non-cell autonomous, signals. Small RNAs have been found to play a crucial role in this process, and specify mutually antagonistic fates. Here, we review both classical and recently-discovered factors that contribute to leaf polarity, as well as the candidate positional signals that their existence implies.

Item Type: Paper
Uncontrolled Keywords: Cell Polarity Gene Expression Regulation, Plant MicroRNAs physiology mRNA Plant Leaves/growth & development physiology Plant Shoots/growth & development physiology Signal Transduction
Subjects: organs, tissues, organelles, cell types and functions > tissues types and functions > leaf polarity
organs, tissues, organelles, cell types and functions > tissues types and functions > meristem
organism description > plant
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > sRNA
CSHL Authors:
Communities: CSHL labs > Timmermans lab
Watson School > Publications
Depositing User: CSHL Librarian
Date: March 2007
Date Deposited: 02 Dec 2011 15:07
Last Modified: 22 Sep 2014 14:37
Related URLs:
URI: http://repository.cshl.edu/id/eprint/22987

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