... with cell division angle but not with meristem positioning/size or AN3 localisation. In contrast, different shapes between sepals and petals compared with foliage leaves were associated with both altered meristem position, due to altered AN3 expression patterns, and different distributions of cell division...

... that zebrafish ( Danio rerio ) embryos lacking either maternal or paternal Cfap53, a centriolar satellite protein, arrest during the first cell cycle. Although Cfap53 is dispensable for sperm aster function, it aids proper formation of the mitotic spindle. During cell division, Cfap53 colocalizes with γ-tubulin...

...Timon W. Matz; Yang Wang; Ritika Kulshreshtha; Arun Sampathkumar; Zoran Nikoloski ABSTRACT Cell division and the resulting changes to the cell organization affect the shape and functionality of all tissues. Thus, understanding the determinants of the tissue-wide changes imposed by cell division...

... used fluorescence loss in photobleaching (FLIP) imaging to show that human embryonic stem cell (hESC)- and induced pluripotent stem cell (iPSC)-derived neural progenitor cells establish an ER diffusion barrier during cell division. The human ER diffusion barrier is regulated via lamin-dependent...

...: A genetic framework involving RPK2 , CVP2 , CVL1 and OPS reveals how Arabidopsis embryonic cotyledons modulate vascular branching for organ growth by an auxin-independent mechanism. Auxin canalization Cell division CLE peptides Developmental plasticity Embryogenesis Vein patterning...

.... Summary: Both increased and reduced BR signalling strength results in altered cell wall orientation in the Arabidopsis root, uncoupled from whole-root growth control. Brassinosteroids Cell wall Cell division Arabidopsis Root Meristem Deutsche Forschungsgemeinschaft http...

... to the first developing molar is an early signaling center, the molar initiation knot (IK), which is required for the progression of mammalian molar tooth development. Cell division Migration Embryonic development Tooth Signaling center Wnt Shh In recent years, advances in 3D and live...

...Annika K. Weimer; Juliana L. Matos; Nidhi Sharma; Farah Patell; James A. H. Murray; Walter Dewitte; Dominique C. Bergmann ABSTRACT Plants, with cells fixed in place by rigid walls, often utilize spatial and temporally distinct cell division programs to organize and maintain organs. This leads...

... culture, so it is possible that we are missing a required signal in this in vitro system. In Manduca sexta , 20E levels appear to fluctuate with an approximately daily rhythm ( Wolfgang and Riddiford, 1986 ), so it is possible that fluctuations of 20E are required to maintain cell divisions...

... throughout segmentation. Our data are complemented by cell division profiles and expression patterns of key genes, including invected and even-skipped as markers for different stages of segment formation. We describe morphological and mechanistic changes in the growth zone and in nascent segments during...

...Dennis A. Ridenour; Rebecca McLennan; Jessica M. Teddy; Craig L. Semerad; Jeffrey S. Haug; Paul M. Kulesa Embryonic cells that migrate long distances must critically balance cell division in order to maintain stream dynamics and population of peripheral targets. Yet details of individual cell...

... motifs. For example, we found that the Myb motif learned by the classifier is crucial for CC activity, and the Myb TF acts in concert with two forkhead domain TFs and Polo kinase to regulate cardiac progenitor cell divisions. In addition, differential motif enrichment and cis-trans genetic studies...

... timings, suggesting that cell division may directly control transcription. However, using mutants with specific defects in cell cycle pathways that lead to abnormal lineages, we found that the order between cell divisions and expression onset can switch, showing that expression of developmental regulators...

... down their long axis in a highly ordered manner, parallel to the tangential axis of the stem. CLAVATA3-LIKE/ESR-RELATED 41 (CLE41) and PHLOEM INTERCALATED WITH XYLEM (PXY) are a multifunctional ligand-receptor pair that regulate vascular cell division, vascular organisation and xylem differentiation...

... capacity in animals, and the potential for differentiated melanocyte cell division in development and regeneration remains largely unexplored. Here, we use time-lapse imaging of the developing zebrafish to show that while most melanocytes arise from undifferentiated precursor cells, an unexpected...

.... In the BR-insensitive bri1-116 mutant, the expression pattern of the cell division markers CYCB1;1, ICK2/KRP2 and KNOLLE revealed that a decreased mitotic activity accounts for the reduced meristem size; accordingly, this defect could be overcome by the overexpression of CYCD3;1 . The activity...

...J. Peter Etchells; Simon R. Turner Controlling the orientation of cell division is fundamental to the development of complex body plans. This is particularly apparent in plants, where development is determined by differential growth that results solely from changes in cell expansion and orientation...

... proliferate before they exit from the cell cycle and differentiate into neural cells. However,little is known about the relationship between cell division and neural differentiation, although, in Xenopus , cell division after the onset of gastrulation has been suggested to be nonessential for neural...

... melanocyte population following melanocyte ablation by MoTP. An alternative model of regeneration without cell division is regeneration by transdifferentiation from one differentiated cell type to another. For example, in amphibians, other NC-derived chromatophores have been suggested...

...Michel Cayouette; Martin Raff Asymmetric segregation of cell-fate determinants during cell division plays an important part in generating cell diversity in invertebrates. We showed previously that cells in the neonatal rat retina divide at various orientations and that some dividing cells...