title: The INHIBITOR OF MERISTEM ACTIVITY (IMA) protein: The nexus between cell division, differentiation and hormonal control of development.
abstract: The INHIBITOR OF MERISTEM ACTIVITY (IMA) gene from tomato regulates the processes of flower and ovule development. 1IMA encodes a Mini Zinc Finger (MIF) protein that is characterized by a very short sequence containing an unusual zinc-finger domain. IMA acts as a repressor of WUSCHEL expression which controls the meristem organizing centre and the determinacy of the nucellus during ovule development. IMA inhibits cell proliferation during floral termination, controls the number of carpels during floral development and participates in the initiation of ovule primordia by activating D-type gene expression. In addition IMA is involved in a multiple hormonal signalling pathway like its Arabidopsis homolog MIF1.2 We thus propose that IMA, as a representative of this new family of zinc finger proteins, is an important effector in the regulatory pathway controlling meristem activity linking cell division, differentiation and hormonal control of development.
authors.affiliation: INRA (Institut National de la Recherche Agronomique); Villenave d'Ornon France.
authors.forename: Adrien
authors.initials: A
authors.lastname: Sicard
authors.forename: Michel
authors.initials: M
authors.lastname: Hernould
authors.forename: Christian
authors.initials: C
authors.lastname: Chevalier
references.citation: Plant Mol Biol. 2001 Jan;45(2):201-14
references.pmid: 11289511
references.citation: Cell. 2001 Jun 15;105(6):793-803
references.pmid: 11440721
references.citation: Nature. 2001 Jan 25;409(6819):469-71
references.pmid: 11206529
references.citation: Plant J. 2006 Feb;45(3):399-422
references.pmid: 16412086
references.citation: Plant Physiol. 1999 Nov;121(3):857-69
references.pmid: 10557234
references.citation: Plant J. 1998 Aug;15(4):501-10
references.pmid: 9753775
references.citation: Nature. 2005 Dec 22;438(7071):1172-5
references.pmid: 16372013
references.citation: Plant Physiol. 2006 Mar;140(3):890-8
references.pmid: 16428599
references.citation: Plant J. 2008 Aug;55(3):415-27
references.pmid: 18410478
references.citation: Annu Rev Genet. 2006;40:77-105
references.pmid: 17094738
references.citation: Cell. 2001 Jun 15;105(6):805-14
references.pmid: 11440722
references.citation: J Biol Chem. 2006 Mar 17;281(11):7374-83
references.pmid: 16407228
references.citation: Genes Dev. 2002 May 1;16(9):1129-38
references.pmid: 12000795