...Simon Scofield; Alexander Murison; Angharad Jones; John Fozard; Mitsuhiro Aida; Leah R. Band; Malcolm Bennett; James A. H. Murray ABSTRACT The Arabidopsis homeodomain transcription factor SHOOT MERISTEMLESS (STM) is crucial for shoot apical meristem (SAM) function, yet the components and structure...

... phyllotactic pattern. In the absence of BELLRINGER , the regular pattern of organ initiation is disturbed and lateral organs are initiated more frequently. BELLRINGER is also required for maintenance of stem cell fate in the absence of the regulatory genes SHOOT MERISTEMLESS and ASYMMETRIC LEAVES1 . We propose...

...Jeff A. Long; M. Kathryn Barton ABSTRACT The apical portion of the Arabidopsis globular stage embryo gives rise to the cotyledons and the shoot apical meristem (SAM). The SHOOT MERISTEMLESS (STM) gene is required for SAM formation during embryogenesis and for SAM function throughout the lifetime...

... organogenesis cell division cell differentiation pattern formation CLAVATA SHOOT MERISTEMLESS Arabidopsis meristem In higher plants, organ formation occurs throughout life. Plants must therefore retain a pool of undifferentiated cells by balancing the proliferation of meristem cells...

...M. Kathryn Barton; R. Scott Poethig ABSTRACT The primary shoot apical meristem of Arabidopsis is initiated late in embryogenesis, after the initiation of the cotyledons. We have identified a gene, called SHOOT MERISTEMLESS , which is critical for this process. shoot meristemless mutant seedlings...