Recent Posts

Developmental functions of Marchantia ROP

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…

CHIQUITA1 maintains the temporal transition between proliferation and differentiation in Arabidopsis (Development)

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…

Make two from one: How embryonic algal cells divide in an orchestrated flow of subcellular structures

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…

Grow less or Grow more, That is the Question

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…

GA-GRF module – A key regulator of rice leaf length via spatial cell division control (New Phytol)

Leaf features have undergone significant changes during the course of evolution and domestication owing to ecological adaptations and changes in source-sink dynamics. Therefore, wild relatives of crop plants are important resources for exploring the genetic regulation of leaf features that might not…

Special Issue of J. Exp. Bot. The quiescent center and root apical meristem: Organization and function

As the name suggests, the root quiescent center (QC) is an area at the root tip of low cell-division activity. This special issue of the Journal of Experimental Botany provides a comprehensive overview of what we understand about the QC and its importance in root growth. The issue is dedicated to the…

Review: Cycling in a crowd: coordination of plant cell division, growth and cell fate (Plant Cell)

Unlike animal cells, plant cells cannot migrate due to the presence of interconnected rigid cell walls, thus plant development relies on a continuous supply of new cells, (fueled by the cell cycle) to form new organs throughout their life. This excellent review by Sablowski and Gutierrez focuses on the…

Deceleration of cell cycle underpins a switch from proliferative-to-terminal division in plant stomatal lineage (bioRxiv)

Precise cell cycle control is essential for the differentiation of specialized cell types. Stomata, essential pores for gas exchange located in the epidermis, are generated via proliferative asymmetric cell division (ACD) of a transient stem cell called a meristemoid, which will give rise to a guard…

A spatiotemporal molecular switch governs plant asymmetric cell division (Nature Plants)

In multicellular organisms, stem cells produce various cell types through asymmetric cell division (ACD), which is achieved is through polarization of cell-fate determinant proteins in the ACD progenitor cells. In Arabidopsis stomatal development, an ACD progenitor cell, the meristemoid mother cell (MMC),…