Genome-Wide Characterization of the HD-ZIP IV Transcription Factor Family in Maize: Preferential Expression in the Epidermis

Javelle, M., Klein-Cosson, C., Vernoud, V., Boltz, V., Maher, C., Timmermans, M. C. P., Depege-Fargeix, N., Rogowsky, P. M. (October 2011) Genome-Wide Characterization of the HD-ZIP IV Transcription Factor Family in Maize: Preferential Expression in the Epidermis. Plant Physiology, 157 (2). pp. 790-803. ISSN 0032-0889

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URL: http://www.ncbi.nlm.nih.gov/pubmed/21825105
DOI: 10.1104/pp.111.182147

Abstract

Transcription factors of the plant-specific homeodomain leucine zipper IV (HD-ZIP IV) family have been found from moss to higher plants, and several family members have been associated with epidermis-related expression and/or function. In maize (Zea mays), four of the five characterized HD-ZIP IV family members are expressed specifically in the epidermis, one contributes to trichome development, and target genes of another one are involved in cuticle biosynthesis. Assessing the phylogeny, synteny, gene structure, expression, and regulation of the entire family in maize, 12 novel ZmHDZIV genes were identified in the recently sequenced maize genome. Among the 17 genes, eight form homeologous pairs duplicated after the split of maize and sorghum (Sorghum bicolor), whereas a fifth duplication is shared with sorghum. All 17 ZmHDZIV genes appear to be derived from a basic module containing seven introns in the coding region. With one possible exception, all 17 ZmHDZIV genes are expressed and show preferential expression in immature reproductive organs. Fourteen of 15 ZmHDZIV genes with detectable expression in laser-dissected tissues exhibit a moderate to very strong expression preference for the epidermis, suggesting that at least in maize, the majority of HD-ZIP IV family members may have epidermis-related functions. Thirteen ZmHDZIV genes carry conserved motifs of 19 and 21 nucleotides in their 3' untranslated region. The strong evolutionary conservation and the size of the conserved motifs in the 3' untranslated region suggest that the expression of HD-ZIP IV genes may be regulated by small RNAs.

Item Type: Paper
Uncontrolled Keywords: homeobox gene cell-differentiation arabidopsis-thaliana pattern-formation high-throughput norway spruce land plants proteins evolution rna
Subjects: bioinformatics
bioinformatics > genomics and proteomics > genetics & nucleic acid processing
bioinformatics > genomics and proteomics
organism description > plant > maize
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > genomes
organism description > plant
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > transcription factor
CSHL Authors:
Communities: CSHL labs > Timmermans lab
CSHL Post Doctoral Fellows
Depositing User: Matt Covey
Date: October 2011
Date Deposited: 06 Feb 2013 22:18
Last Modified: 02 May 2013 18:56
PMCID: PMC3192571
Related URLs:
URI: http://repository.cshl.edu/id/eprint/27140

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