2006
DOI: 10.1105/tpc.106.046136
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Abstract: Coordination between cell proliferation and differentiation is essential to create organized and functional tissues. Arabidopsis thaliana stomata are created through a stereotyped series of symmetric and asymmetric cell divisions whose frequency and orientation are informed by cell-cell interactions. Receptor-like proteins and a mitogen-activated protein kinase kinase kinase were previously identified as negative regulators of stomatal development; here, we present the characterization of a bona fide positive … Show more

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Cited by 424 publications
(612 citation statements)
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References 36 publications
(59 reference statements)
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“…HDG2 is necessary for progression of stomatal cell lineages and, most strikingly, is sufficient to drive stomatal differentiation in internal mesophyll tissues. The internal stomata in HDG2-OX are normal in appearance, and thus different from FAMA-OX, which confers abnormally shaped mesophyll cells expressing mature GC markers (Ohashi-Ito and Bergmann, 2006). Our data support the idea that HDG2-OX upregulates whole sets of gene regulatory cascades, which leads to stomatal differentiation.…”
Section: Discussionsupporting
confidence: 77%
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“…HDG2 is necessary for progression of stomatal cell lineages and, most strikingly, is sufficient to drive stomatal differentiation in internal mesophyll tissues. The internal stomata in HDG2-OX are normal in appearance, and thus different from FAMA-OX, which confers abnormally shaped mesophyll cells expressing mature GC markers (Ohashi-Ito and Bergmann, 2006). Our data support the idea that HDG2-OX upregulates whole sets of gene regulatory cascades, which leads to stomatal differentiation.…”
Section: Discussionsupporting
confidence: 77%
“…Among them, MUTE and SCRM are capable of converting the aerial shoot epidermis into stomata when ectopically overexpressed or stabilized (Kanaoka et al, 2008;Pillitteri et al, 2008). By contrast, ectopic overexpressions of SPCH and FAMA confer excessive asymmetric entry divisions and the formation of guard cell-like cells, respectively (MacAlister et al, 2007;Ohashi-Ito and Bergmann, 2006;Pillitteri et al, 2007). Importantly, the ability of MUTE and SCRM to trigger stomatal differentiation is limited to the epidermis.…”
Section: Introductionmentioning
confidence: 99%
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“…Homologous bHLH proteins in animals, such as the four mammalian myogenic regulators, MyoD, Myf-5, myogenin, and MRF4, as well as the achaete-scute complex in Drosophila melanogaster, control sequential processes in a hierarchical fashion (Olson, 1990;Campuzano and Modolell, 1992;Weintraub, 1993). In Arabidopsis, three closely related bHLH proteins, SPCH, MUTE, and FAMA, are key switches for three key consecutive steps of stomatal formation (Ohashi-Ito and Bergmann, 2006;MacAlister et al, 2007;Pillitteri et al, 2007;Lampard, 2009;Hachez et al, 2011;Triviño et al, 2013) Our previous work shows that, phylogenetically, TIP2, EAT1, and TDR are closely grouped (X. , and they might be generated by gene duplication during evolution. This work and our previous discovery reveal that these three bHLH proteins display successive expression patterns and have overlapping and divergent functions during anther development (Figure 10) (N. Niu et al, 2013).…”
Section: Consecutive Functions Of Three Bhlh Transcription Factors Inmentioning
confidence: 99%
“…While it is easy to understand the roles and specificity of such lower-order TFs in regulating metabolic pathways-particularly pathways of secondary metabolism in plants, there are also probably TFs controlling morphological cellular specializations in similar ways, such as members of the MYB/bHLH/WD40 complex controlling trichome formation in Arabidopsis, MIXTA/ ML1 regulating conical cell and trichome development in Antirrhinum flowers (Peres-Rodriguez et al, 2005), and FAMA in stomatal development in Arabidopsis (Ohashi-Ito and Bergmann, 2006). Studies looking at target genes regulated by these TFs show relatively restricted numbers of direct targets (Morohashi and Grotewold, 2009) and misexpression does not have highly pleiotropic effects but is usually restricted to the numbers of the specialized cell types that develop.…”
Section: The Importance Of the Roles Of Tfs In Regulatory Networkmentioning
confidence: 99%