<i>RABBIT EARS</i>, encoding a SUPERMAN-like zinc finger protein,regulates petal development in<i>Arabidopsis thaliana</i>

Takeda, Seiji; Matsumoto, Natsuki; Okada, Kiyotaka

doi:10.1242/dev.00938

Cited by 161 publications

(90 citation statements)

References 45 publications

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“…In silico analysis revealed that there are 176 C2H2-type zinc finger proteins in Arabidopsis, from which 33 are conserved in other eukaryotes and 143 appear to be plant specific (Englbrecht et al, 2004). Members of this gene family have been implicated in the regulation of plant development, including photomorphogenesis, leaf, shoot, and flower organogenesis, gametogenesis, seed development, and dormancy (Sakai et al, 1995;Chrispeels et al, 2000;Prigge and Wagner, 2001;Dinkins et al, 2002;He and Gan, 2004;Ohno et al, 2004;Takeda et al, 2004). Our data show that ZFP3 and its closest C2H2-type zinc-finger protein homologs (ZFPs) are negative regulators of ABA signaling during germination, influence vegetative development and fertility, and modulate red light signaling in seedling photomorphogenesis.…”

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confidence: 66%

The Arabidopsis ZINC FINGER PROTEIN3 Interferes with Abscisic Acid and Light Signaling in Seed Germination and Plant Development

et al. 2014

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Seed germination is controlled by environmental signals, including light and endogenous phytohormones. Abscisic acid (ABA) inhibits, whereas gibberellin promotes, germination and early seedling development, respectively. Here, we report that ZFP3, a nuclear C2H2 zinc finger protein, acts as a negative regulator of ABA suppression of seed germination in Arabidopsis (Arabidopsis thaliana). Accordingly, regulated overexpression of ZFP3 and the closely related ZFP1, ZFP4, ZFP6, and ZFP7 zinc finger factors confers ABA insensitivity to seed germination, while the zfp3 zfp4 double mutant displays enhanced ABA susceptibility. Reduced expression of several ABA-induced genes, such as RESPONSIVE TO ABSCISIC ACID18 and transcription factor ABSCISIC ACID-INSENSITIVE4 (ABI4), in ZFP3 overexpression seedlings suggests that ZFP3 negatively regulates ABA signaling. Analysis of ZFP3 overexpression plants revealed multiple phenotypic alterations, such as semidwarf growth habit, defects in fertility, and enhanced sensitivity of hypocotyl elongation to red but not to far-red or blue light. Analysis of genetic interactions with phytochrome and abi mutants indicates that ZFP3 enhances red light signaling by photoreceptors other than phytochrome A and additively increases ABA insensitivity conferred by the abi2, abi4, and abi5 mutations. These data support the conclusion that ZFP3 and the related ZFP subfamily of zinc finger factors regulate light and ABA responses during germination and early seedling development.

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confidence: 66%

The Arabidopsis ZINC FINGER PROTEIN3 Interferes with Abscisic Acid and Light Signaling in Seed Germination and Plant Development

et al. 2014

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“…It is not surprising, however, for a boundary gene to control cell proliferation, as cell division rates are lower at boundaries, including the boundary between stamens and carpels, than in developing organs (2,26). For instance, RABBIT EARS (RBE), which encodes a C2H2 zinc-finger protein related to SUP, specifies the boundary between whorls 2 and 3 by excluding AG from whorl 2 (27,28), and also specifies the intersepal boundaries by regulating cell proliferation in whorl 1 via the miR164/CUP-SHAPED COTYLEDON (CUC) module (29).…”

Section: Discussionmentioning

confidence: 99%

SUPERMAN prevents class B gene expression and promotes stem cell termination in the fourth whorl of Arabidopsis thaliana flowers

Prunet

Yang

Das

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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The molecular and genetic networks underlying the determination of floral organ identity are well studied, but much less is known about how the flower is partitioned into four developmentally distinct whorls. The SUPERMAN gene is required for proper specification of the boundary between stamens in whorl 3 and carpels in whorl 4, as superman mutants exhibit supernumerary stamens but usually lack carpels. However, it has remained unclear whether extra stamens in superman mutants originate from an organ identity change in whorl 4 or the overproliferation of whorl 3. Using live confocal imaging, we show that the extra stamens in superman mutants arise from cells in whorl 4, which change their fate from female to male, while floral stem cells proliferate longer, allowing for the production of additional stamens

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“…4B). We also studied the effect of transfer DNA insertions within binding sites located in the vicinity of the floral regulators UN-USUAL FLORAL ORGANS (UFO) (28) and RABBIT EARS (RBE) (29), which respond transcriptionally to the perturbation of B function (Fig. 2F).…”

Section: Time After Treatment Start [H] Normalized Expressionmentioning

confidence: 99%

Molecular basis for the specification of floral organs by APETALA3 and PISTILLATA

Wuest

Ó’Maoiléidigh

Rae

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

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How different organs are formed from small sets of undifferentiated precursor cells is a key question in developmental biology. To understand the molecular mechanisms underlying organ specification in plants, we studied the function of the homeotic selector genes APETALA3 (AP3) and PISTILLATA (PI), which control the formation of petals and stamens during Arabidopsis flower development. To this end, we characterized the activities of the transcription factors that AP3 and PI encode throughout flower development by using perturbation assays as well as transcript profiling and genomewide localization studies, in combination with a floral induction system that allows a stage-specific analysis of flower development by genomic technologies. We discovered considerable spatial and temporal differences in the requirement for AP3/PI activity during flower formation and show that they control different sets of genes at distinct phases of flower development. The genomewide identification of target genes revealed that AP3/PI act as bifunctional transcription factors: they activate genes involved in the control of numerous developmental processes required for organogenesis and repress key regulators of carpel formation. Our results imply considerable changes in the composition and topology of the gene network controlled by AP3/PI during the course of flower development. We discuss our results in light of a model for the mechanism underlying sex-determination in seed plants, in which AP3/PI orthologues might act as a switch between the activation of male and the repression of female development.F lowers are typically composed of four organ types, which are disposed in four floral whorls. From the outside of the flower to the center, they are sepals, petals, stamens, and carpels (the subunits of the gynoecium). The developmental fate of these different types of organs is specified by a small number of floral organ identity genes. The pivotal role of these genes was uncovered through the analysis of mutants that form flowers with homeotic transformations, i.e., the replacement of one type of organ with another (1-4). Based on the morphological defects of the individual mutants and their genetic interactions, it was proposed that the floral organ identity genes act in a combinatorial manner and have distinct functions during flower development, with the so-called A function genes being required for the formation of sepals and petals, B function genes for petal and stamen development, and C function genes for the formation of stamens and carpels. This well-established ABC model of floral organ identity specification (5) has provided, since its introduction more than 20 y ago, an invaluable framework for the analysis of the genetic mechanisms underlying the formation and evolution of flowers.Molecular characterization of the floral organ identity genes in different species revealed that they encode transcription factors and belong, with few exceptions, to the family of MADS domain proteins (1-3). The floral organ identity factors w...

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RABBIT EARS, encoding a SUPERMAN-like zinc finger protein,regulates petal development inArabidopsis thaliana

Cited by 161 publications

References 45 publications

The Arabidopsis ZINC FINGER PROTEIN3 Interferes with Abscisic Acid and Light Signaling in Seed Germination and Plant Development

The Arabidopsis ZINC FINGER PROTEIN3 Interferes with Abscisic Acid and Light Signaling in Seed Germination and Plant Development

SUPERMAN prevents class B gene expression and promotes stem cell termination in the fourth whorl of Arabidopsis thaliana flowers

Molecular basis for the specification of floral organs by APETALA3 and PISTILLATA

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