...Muhammad Uzair; Ricardo Andres Urquidi Camacho; Ziyi Liu; Alex M. Overholt; Daniel DeGennaro; Liang Zhang; Brittani S. Herron; Tian Hong; Elena D. Shpak ABSTRACT The shoot apical meristem (SAM) gives rise to the aboveground organs of plants. The size of the SAM is relatively constant due...

... is a key question in developmental biology. Here, we use a network representation of live cell imaging data from shoot apical meristems (SAMs) in Arabidopsis thaliana to predict cell division events and their consequences at the tissue level. We show that a support vector machine classifier based...

...Liang Zhang; Daniel DeGennaro; Guangzhong Lin; Jijie Chai; Elena D. Shpak ABSTRACT The shoot apical meristem (SAM) is a reservoir of stem cells that gives rise to all post-embryonic above-ground plant organs. The size of the SAM remains stable over time owing to a precise balance of stem cell...

...Alessia Armezzani; Ursula Abad; Olivier Ali; Amélie Andres Robin; Laetitia Vachez; Antoine Larrieu; Ewa J. Mellerowicz; Ludivine Taconnat; Virginie Battu; Thomas Stanislas; Mengying Liu; Teva Vernoux; Jan Traas; Massimiliano Sassi ABSTRACT The shoot apical meristem of higher plants continuously...

...Yuka Kimura; Masao Tasaka; Keiko U. Torii; Naoyuki Uchida ABSTRACT The epidermal cell layer and the tissues that lie underneath have different intrinsic functions during plant development. The stem cells within the shoot apical meristem (SAM) that give rise to aerial structures are located...

...Margaret E. Wilson; Matthew Mixdorf; R. Howard Berg; Elizabeth S. Haswell The balance between proliferation and differentiation in the plant shoot apical meristem is controlled by regulatory loops involving the phytohormone cytokinin and stem cell identity genes. Concurrently, cellular...

... identified key mechanisms and also indicated a possible link to other developmental processes, such as the formation of the shoot apical meristem (SAM). However, our understanding of nodulation is still limited by the low number of nodulation-related genes that have been identified. Here, we show...

..., Medical Centre, Montebello 0310 Oslo, Norway Competing interests statement The authors declare no competing financial interests. 30 8 2011 © 2011. Cell wall Pectins Pectin methylesterase (PME) Shoot apical meristem Phyllotaxis Arabidopsis...

... of cell division and differentiation among stem cell progenitors. Shoot apical meristems (SAMs) of higher plants harbor a set of stem cells within the central zone (CZ) that divide infrequently. Stem cell daughters that are displaced towards the surrounding peripheral zone (PZ) divide at a faster rate...

... multicellular model organisms. Biochemical evidence suggests that FASCIATA1, FASCIATA2 and MSI1 form CAF-1 in Arabidopsis thaliana . Because fasciata mutants are viable, CAF-1 is not essential for cell division in plants. Arabidopsis CAF-1 mutants have defects in shoot apical meristems; in addition, CAF-1...

... microRNA Arabidopsis thaliana shoot apical meristem polarity HD-ZIP Eukaryotic development requires the precise spatial and temporal expression of regulatory genes that pattern tissues and control cell fate. It is becoming increasingly clear that small RNA molecules are important participants...

...Cristel C. Carles; Dan Choffnes-Inada; Keira Reville; Kvin Lertpiriyapong; Jennifer C. Fletcher The higher-plant shoot apical meristem is a dynamic structure continuously producing cells that become incorporated into new leaves, stems and flowers. The maintenance of a constant flow of cells through...

... cell divisions in the shoot apical meristems (SAMs) of Arabidopsis thaliana . The live imaging technique has led to the development of a spatial and temporal map of cell division patterns. We have integrated cell behavior over time to visualize growth. Our analysis reveals temporal variation in mitotic...

... Homeobox Shoot apical meristem KNOX BELLRINGER BREVIPEDICELLUS SHOOT MERISTEMLESS ASYMMETRIC LEAVES1 The plant shoot is derived from a group of undifferentiated stem cells within the shoot apical meristem (SAM). Lateral organs such as leaves arise on the flanks of the SAM by the coordinated...

... MERISTEM LAYER1 PROTODERMAL FACTOR2 Shoot apical meristem The shoot apical meristem of angiosperms consists of clonally distinct cell layers. The outermost layer (L1) gives rise to the epidermis of the primary shoot by anticlinal cell division (for a review, see Howell, 1998 ; Lyndon, 1998...

...Mary E. Byrne; Joseph Simorowski; Robert A. Martienssen The shoot apical meristem comprises undifferentiated stem cells and their derivatives, which include founder cells for lateral organs such as leaves. Meristem maintenance and lateral organ specification are regulated in part by negative...

... stage (juvenile phase) of the wild type. The short plastochron and high cell division activity in the shoot apical meristem further confirmed the juvenility of mori1 , corresponding to the 2nd-leaf-differentiation stage in the wild-type embryo. Furthermore, the apparent photosynthetic rate in mori1...

... the effects of a mutation in the Handlebars gene, identified as an enhancer of the phantastica mutant phenotype. Genetic analysis suggests that Handlebars functions redundantly with Phantastica to promote dorsal fate in lateral organs and to maintain activity of stem cells within shoot apical meristems...

.... e-mail: [email protected] 22 March 2001 5 February 2001 © 2001 by Company of Biologists 2001 ULTRAPETALA (ULT) Shoot apical meristem Organ number Arabidopsis thaliana The meristems of higher plants are centers of cell proliferation and organ...

...Shinobu Takada; Ken-ichiro Hibara; Tetsuya Ishida; Masao Tasaka ABSTRACT In higher plants, molecular mechanisms regulating shoot apical meristem (SAM) formation and organ separation are largely unknown. The CUC1 ( CU P-SHAPED C OTYLEDON1 ) and CUC2 are functionally redundant genes that are involved...