Tag: Cell Division

Brassinosteroids are plant hormones that play important roles in cell proliferation and expansion, but it is still unclear exactly what those roles are. Vukasinovic and colleagues show, in Arabidopsis thaliana root cells, that instrinsic brassinosteroid gradients signal anticlinal division. Single-cell…

Bellinger and Uyehara et al. characterize a population of microtubules that contribute to division site positioning. By Aimee N. Uyehara1 and Carolyn G. Rasmussen1 1Department of Botany and Plant Sciences, Center for Plant Cell Biology, Institute for Integrative Genome Biology, University of California,…

Callose is a polysaccharide with amorphous, gel-like properties that often serves as a transient matrix in plant cell walls. Callose deposition at plasmodesmata can regulate the movement of molecules between cells, transient callose deposition in phloem sieve elements occurs in response to stress, callose…

During plant cell division, the new cell wall is built along a plant-specific structure named the phragmoplast. The phragmoplast is a complex array of microtubules and microfilaments that originates at the middle of the cell and expands outwards to the division site at the cell cortex. The proper orientation…

Precise control of cell division is an important requirement for proper development in multicellular organisms. Rho-like GTPases from Plants (ROPs) are key conserved regulators of cell polarity and morphogenesis, however, it is unknown if ROP signaling pathways regulate cell division patterning and meristem…

Organ size is imperative to biological function. In plants, newly-developing organs start out as a pool of meristematic cells, which set the number of cells in the organ through regulated iterations of cellular division; eventually, these cells transition out of the cell cycle and differentiate, during…

Von der Heyde and Hallmann uncover the enormous dynamics of early cell divisions in Volvox embryos.  https://doi.org/10.1093/plcell/koac004 Eva Laura von der Heyde and Armin Hallmann Department of Cellular and Developmental Biology of Plants, University of Bielefeld, Universitätsstr. 25, 33615…

Longkumer et al. explore how plant growth is regulated during drought. Paul E. Verslues and Toshisangba Longkumer, Institute of Plant and Microbial Biology, Academia Sinica, Taipei, TAIWAN Background: Plants can deliberately slow down their growth in response to even a small decrease in water…