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Meristem activity during flower and ovule development in tomato is controlled by the mini zinc finger gene INHIBITOR OF MERISTEM ACTIVITY.
Plant J. 2008 Aug; 55(3):415-27.PJ

Abstract

Plants have the ability to form new organs as a result of indeterminate growth ensured by specific regions of pluripotent cells, called meristems. Flowers are produced by the activity of floral meristems which differ from vegetative meristems in their determinate fate. Transcriptional complexes associating C-, D- and E-type MADS box proteins are responsible for flower determinacy by controlling the stem cell population within the floral meristem. We report here that the INHIBITOR OF MERISTEM ACTIVITY (IMA) gene encoding a mini zinc finger (MIF) protein from tomato (Solanum lycopersicum) regulates the processes of flower and ovule development. IMA inhibits cell proliferation during floral termination, controls the number of carpels during floral development and acts as a repressor of the meristem organizing centre gene WUSCHEL. Underexpression of IMA prevents the formation of gametophytic tissue, which is replaced by an undetermined sporophytic tissue. Molecular analyses of MADS box gene expression revealed that IMA participates in the termination of floral meristems and initiation of ovule primordia by activating D-type gene expression. Taken together, our data indicate that both termination of floral meristems and differentiation of nucelli during ovule development require a similar mechanism involving the repression of WUSCHEL and the activation of D-class genes.

Authors+Show Affiliations

Institut National de la Recherche Agronomique, Université de Bordeaux, Unité Mixte de Recherche 619 sur la Biologie du Fruit, Institut Fédératif de Recherche 103, BP 81, F-33883 Villenave d'Ornon Cedex, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18410478

Citation

Sicard, Adrien, et al. "Meristem Activity During Flower and Ovule Development in Tomato Is Controlled By the Mini Zinc Finger Gene INHIBITOR of MERISTEM ACTIVITY." The Plant Journal : for Cell and Molecular Biology, vol. 55, no. 3, 2008, pp. 415-27.
Sicard A, Petit J, Mouras A, et al. Meristem activity during flower and ovule development in tomato is controlled by the mini zinc finger gene INHIBITOR OF MERISTEM ACTIVITY. Plant J. 2008;55(3):415-27.
Sicard, A., Petit, J., Mouras, A., Chevalier, C., & Hernould, M. (2008). Meristem activity during flower and ovule development in tomato is controlled by the mini zinc finger gene INHIBITOR OF MERISTEM ACTIVITY. The Plant Journal : for Cell and Molecular Biology, 55(3), 415-27. https://doi.org/10.1111/j.1365-313X.2008.03520.x
Sicard A, et al. Meristem Activity During Flower and Ovule Development in Tomato Is Controlled By the Mini Zinc Finger Gene INHIBITOR of MERISTEM ACTIVITY. Plant J. 2008;55(3):415-27. PubMed PMID: 18410478.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Meristem activity during flower and ovule development in tomato is controlled by the mini zinc finger gene INHIBITOR OF MERISTEM ACTIVITY. AU - Sicard,Adrien, AU - Petit,Johann, AU - Mouras,Armand, AU - Chevalier,Christian, AU - Hernould,Michel, Y1 - 2008/04/12/ PY - 2008/4/16/pubmed PY - 2008/10/22/medline PY - 2008/4/16/entrez SP - 415 EP - 27 JF - The Plant journal : for cell and molecular biology JO - Plant J VL - 55 IS - 3 N2 - Plants have the ability to form new organs as a result of indeterminate growth ensured by specific regions of pluripotent cells, called meristems. Flowers are produced by the activity of floral meristems which differ from vegetative meristems in their determinate fate. Transcriptional complexes associating C-, D- and E-type MADS box proteins are responsible for flower determinacy by controlling the stem cell population within the floral meristem. We report here that the INHIBITOR OF MERISTEM ACTIVITY (IMA) gene encoding a mini zinc finger (MIF) protein from tomato (Solanum lycopersicum) regulates the processes of flower and ovule development. IMA inhibits cell proliferation during floral termination, controls the number of carpels during floral development and acts as a repressor of the meristem organizing centre gene WUSCHEL. Underexpression of IMA prevents the formation of gametophytic tissue, which is replaced by an undetermined sporophytic tissue. Molecular analyses of MADS box gene expression revealed that IMA participates in the termination of floral meristems and initiation of ovule primordia by activating D-type gene expression. Taken together, our data indicate that both termination of floral meristems and differentiation of nucelli during ovule development require a similar mechanism involving the repression of WUSCHEL and the activation of D-class genes. SN - 1365-313X UR - https://www.unboundmedicine.com/medline/citation/18410478/Meristem_activity_during_flower_and_ovule_development_in_tomato_is_controlled_by_the_mini_zinc_finger_gene_INHIBITOR_OF_MERISTEM_ACTIVITY_ L2 - https://doi.org/10.1111/j.1365-313X.2008.03520.x DB - PRIME DP - Unbound Medicine ER -