... transcription factor SHOOT MERISTEMLESS coordinates multiple aspects of meristem function by regulating the expression of other transcription factors with key roles in pluripotency and pattern formation. SHOOT MERISTEMLESS Gene regulatory network Arabidopsis Homeodomain Meristem KNOX...

...Angela Hay; Miltos Tsiantis Knotted1-like homeobox (KNOX) proteins are homeodomain transcription factors that maintain an important pluripotent cell population called the shoot apical meristem, which generates the entire above-ground body of vascular plants. KNOX proteins regulate target genes...

...-like homeobox (KNOX) and ASYMMETRIC LEAVES1 (AS1) transcription factors, such that KNOX proteins are confined to the meristem and AS1 to leaf initials. Sites of leaf inception are also defined by local accumulation of the hormone auxin; however, it is unknown how auxin and AS1 activities are integrated...

... showing high GUS activity (inset). Scale bars: 50 μm (A,B,H-L), 0.5 cm (F and insets in K,P), 1 cm (E,G,M-P), 3 cm(C,D). In plants with simple leaves, KNOX genes are usually expressed only in the SAM, though developmental consequences of ectopic leaf expression and the expression of KNOX genes...

... of both LeT6 (a tomato KNOX gene) and LePHAN during post-primordial leaf development was correlated with a reduction in leaflet formation in the wiry mutants. LePHAN expression in LeT6 overexpression mutants suggests that LeT6 is a negative regulator of LePHAN. KNOX expression is known to be correlated...

... for correspondence (e-mail: martiens@cshl.org ) * These authors contributed equally to this work 21 5 2003 © 2003. 2003 Phyllotaxy Homeobox Shoot apical meristem KNOX BELLRINGER BREVIPEDICELLUS SHOOT MERISTEMLESS ASYMMETRIC LEAVES1 The plant shoot is derived from a group...

...Michael J. Scanlon; David C. Henderson; Brad Bernstein The expression of class 1 knotted1- like homeob ox ( knox ) genes affects numerous plant developmental processes, including cell-fate acquisition, lateral organ initiation, and maintenance of shoot apical meristems. The SEMAPHORE1 gene product...