2005
DOI: 10.1105/tpc.105.034116
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The Arabidopsis R2R3 MYB Proteins FOUR LIPS and MYB88 Restrict Divisions Late in the Stomatal Cell Lineage

Abstract: The two guard cells of a stoma are produced by a single symmetric division just before terminal differentiation. Recessive mutations in the FOUR LIPS (FLP) gene abnormally induce at least four guard cells in contact with one another. These pattern defects result from a persistence of precursor cell identity that leads to extra symmetric divisions at the end of the cell lineage. FLP is likely to be required for the correct timing of the transition from cell cycling to terminal differentiation. FLP encodes a two… Show more

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Cited by 202 publications
(280 citation statements)
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“…This is similar to what has been observed in tmm (Geisler et al, 2000;Nadeau and Sack, 2002b). In the most severe case, the MKK4/MKK5 tandem RNAi transgenic plants showed a stomate-only phenotype (Figure 2 (Yang and Sack, 1995;Lai et al, 2005). FLP, along with its close homolog MYB88, belongs to the R2R3-type MYBs.…”
Section: Discussion the Mapk Signaling Cascade Functions As A Key Regsupporting
confidence: 65%
“…This is similar to what has been observed in tmm (Geisler et al, 2000;Nadeau and Sack, 2002b). In the most severe case, the MKK4/MKK5 tandem RNAi transgenic plants showed a stomate-only phenotype (Figure 2 (Yang and Sack, 1995;Lai et al, 2005). FLP, along with its close homolog MYB88, belongs to the R2R3-type MYBs.…”
Section: Discussion the Mapk Signaling Cascade Functions As A Key Regsupporting
confidence: 65%
“…In particular, other R2R3 MYB subgroup 22 genes respond to environmental stresses very similarly, as indicated by significant up-regulation in the sos2 mutant (Kamei et al, 2005) and by cold (Fowler and Thomashow, 2002). In many studies, double-knockout mutants of MYB genes resulted in more severe defects than the parental single mutants, as observed in anther and stomatal development (Lai et al, 2005;Mandaokar et al, 2006). Some pairs of similar MYB genes, such as GL1-WEREWOLF and FLP-MYB88, are capable of reciprocally complementing loss-of-function mutations in each locus (Lee and Schiefelbein, 2001;Kirik et al, 2005;Lai et al, 2005).…”
Section: Discussionmentioning
confidence: 96%
“…In many studies, double-knockout mutants of MYB genes resulted in more severe defects than the parental single mutants, as observed in anther and stomatal development (Lai et al, 2005;Mandaokar et al, 2006). Some pairs of similar MYB genes, such as GL1-WEREWOLF and FLP-MYB88, are capable of reciprocally complementing loss-of-function mutations in each locus (Lee and Schiefelbein, 2001;Kirik et al, 2005;Lai et al, 2005). Therefore, a future study should be performed using double or multiple mutants of R2R3 MYB subgroup 22 genes.…”
Section: Discussionmentioning
confidence: 99%
“…The extracellular-localized subtilisin protease SDD1 was proposed to process a precursor of an unknown mobile signal that controls stomatal density, and to a lesser extent, stomatal pattern (Berger and Altmann 2000). These cellcell signal(s) are thought to ultimately affect the transcription factors that direct cell stomatal cell division and celltype differentiation (Lai et al 2005;Ohashi-Ito and Bergmann 2006;Macalister et al 2007;Pillitteri et al 2007). …”
mentioning
confidence: 99%