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The PERIANTHIA gene encodes a bZIP protein involved in the determination of floral organ number in Arabidopsis thaliana

Chuang, Chiou-Fen and Running, Mark P. and Williams, Robert W. and Meyerowitz, Elliot M. (1999) The PERIANTHIA gene encodes a bZIP protein involved in the determination of floral organ number in Arabidopsis thaliana. Genes and Development, 13 (3). pp. 334-344. ISSN 0890-9369. PMCID PMC316427.

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Mutations in the PERIANTHIA (PAN) gene ofArabidopsis thaliana specifically transform flowers from tetramerous to largely pentamerous, which is a characteristic of flowers of ancestral plants. We have cloned the PAN gene and here we show that it encodes a member of the basic region/leucine zipper class of transcription factors. Immunohistochemical analysis shows that the encoded protein is present in the apical meristem, the floral meristem, each whorl of organ primordia, and in ovule primordia during wild-type flower development.PAN expression occurs independently of genes affecting floral meristem identity, floral meristem size, or floral organ number. The near absence of a phenotype in transgenic plants overexpressingPAN and the contrast between the broad expression ofPAN and the specificity of its mutant phenotype suggest that its activity may be regulated post-translationally or by the presence of partner proteins. Based on these results and on data reported previously, we propose models for the role of PAN in the evolution of flower pattern in the mustard family.

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Meyerowitz, Elliot M.0000-0003-4798-5153
Additional Information:© 1999 Cold Spring Harbor Laboratory Press. The Authors acknowledge that six months after the full-issue publication date, the Article will be distributed under a Creative Commons CC-BY-NC License (Attribution-NonCommercial 4.0 International License, Received December 9, 1998; accepted December 23, 1998. We thank Yuval Eshed and John Bowman for the isolation and gift of the pan-3 to pan-6 alleles, Patricia Zambryski for the ett and tsl seeds. We also thank Catherine Baker, Xuemei Chen, Jennifer Fletcher, Neil Hopper, Toshiro Ito, Carolyn Ohno, Robert Sablowski, Doris Wagner, and Eva Ziegelhoffer for critical comments on the manuscript, and L. Medrano for technical assistance. This work was supported by USDA-National Research Initiative Competitive Grants Program (NRICGP) grant 9602558 to E.M.M. M.P.R. was a Howard Hughes Predoctoral Fellow. R.W.W. was supported by National Institutes of Health predoctoral training grant GM07616 and the Howard Hughes Medical Institute. The publication costs of this article were defrayed in part by payment of page charges. This article must therefore be hereby marked ‘advertisement’ in accordance with 18 USC section 1734 solely to indicate this fact. The nucleotide sequence data of PAN reported in this paper will appear in the EMBL, GenBank, and DDBJ databases under accession number AF111711.
Funding AgencyGrant Number
U.S. Department of Agriculture9602558
Howard Hughes Medical Institute (HHMI)UNSPECIFIED
NIH Predoctoral FellowshipGM07616
Subject Keywords:Arabidopsis; flower development; PAN; bZIP protein
Issue or Number:3
PubMed Central ID:PMC316427
Record Number:CaltechAUTHORS:20161214-121626324
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Official Citation:The PERIANTHIA gene encodes a bZIP protein involved in the determination of floral organ number in Arabidopsis thaliana Chiou-Fen Chuang, Mark P. Running, Robert W. Williams, and Elliot M. Meyerowitz Genes Dev. February 1, 1999 13: 334-344
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72821
Deposited By: George Porter
Deposited On:14 Dec 2016 21:41
Last Modified:03 Oct 2019 16:21

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