PMID: 9161038Apr 1, 1997Paper

Targeted misexpression of AGAMOUS in whorl 2 of Arabidopsis flowers

The Plant Journal : for Cell and Molecular Biology
T JackElliot M Meyerowitz

Abstract

In Arabidopsis, transcripts of the floral organ identity genes APETALA3, APETALA1, AGAMOUS, and PISTILLATA are expressed only in a subset of the floral organs. To test and extend present models for establishment of floral organ identity, we constructed a transgenic line that expresses the AGAMOUS gene under the control of the APETALA3 promotor (pAP3::AG). In wild-type flowers, AGAMOUS is expressed in the third and fourth floral whorls, whereas APETALA3 is expressed at high levels in whorls two and three. Under the control of the APETALA3 promotor, AGAMOUS is misexpressed in the second whorl of the flower. The organs in the second whorl of pAP3::AG flowers either fail to develop or develop as stamens. When pAP3::AG is crossed to the homeotic mutants apetala1, apetala3, pistilla, agamous and superman, novel floral phenotypes result. In pAP3::AG agamous-3 mutants, the flowers are indeterminate and consist of a repetition of sepals and stamens, rather that sepals and petals, as is observed in agamous single mutants; the indeterminacy demonstrates that AG is required in the fourth whorl to make a flower determinate.

Citations

Feb 8, 2006·Development Genes and Evolution·In-Ja SongAkira Kanno
Aug 29, 2003·The Plant Journal : for Cell and Molecular Biology·Yingzhen YangThomas Jack
Jan 26, 2002·Molecular Biology of the Cell·Muthugapatti K KandasamyRichard B Meagher
Jun 6, 2009·Plant Physiology·Nathanaël PrunetChristophe Trehin
Jun 27, 2003·Proceedings of the National Academy of Sciences of the United States of America·Tim DurfeePatricia C Zambryski
Jan 31, 2012·Plant Science : an International Journal of Experimental Plant Biology·Hitoshi Yoshida
Jul 8, 2008·Trends in Plant Science·Vivian F Irish
Sep 14, 2012·Molecular Plant·Yangbin Gao, Yunde Zhao
Jul 20, 2006·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·Teemu H TeeriVictor A Albert
Nov 24, 1999·Molecular and Cellular Biology·J L RiechmannE M Meyerowitz
Mar 12, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Meng-Xin LuZi-Qin Xu
Sep 11, 2004·Development·Jennifer Pfluger, Patricia Zambryski

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