Arabidopsis HOBBIT gene encodes a CDC27 homolog that links the plant cell cycle to progression of cell differentiation

EdU-Based Quantitative Analysis of Cell Proliferation in Arabidopsis Root Meristems.

A Cajal body assembly factor regulates cell fate transitions in Arabidopsis

Ribonucleoprotein (RNP) condensates are emerging as key regulators of cell fate transitions, yet their functions have been largely linked to mRNA storage and translational control. Here, we uncover a role for Cajal body (CB)-mediated pre-mRNA splicing in coordinating the transition from stem cell divisions to different...

Molecular mechanisms underlying the maintenance of terminal differentiation in Arabidopsis guard cells

In many plant species, guard cells retain their distinctive morphology and physiological function for extended periods after differentiation and maturation. How this terminally differentiated state is actively maintained over time is not fully understood, but recent studies have begun to reveal the underlying mechanism...

Asymmetric RBBP7 regulates the first cell fate decision of early mammalian embryos

Asymmetric transcription of noncoding RNA LincGET is currently recognized as the earliest event regulating the first cell fate decision in mammalian embryogenesis. However, whether key protein factors modulate this process remains elusive. Here, we identify RBBP7 as the earliest protein factor regulating developmental...

RHO GTPase of Plants contributes to robust establishment of cellular asymmetry during development from a single cell

A fundamental question in developmental biology is how highly complex, yet reproducible multicellular body plans form from a single cell. The multicellular haploid body of the land plant Marchantia polymorpha develops from a single isolated cell – the spore – that divides asymmetrically. This produces a small terminall...

Terno, a cyclin-interacting protein regulating meiotic exit and sperm differentiation in Drosophila.

It is suggested that Teo facilitates targeted degradation of the cyclins, so that in teo mutants, there is an increase in Cdk1-CycA and Cdk1-CycB activities, resulting in both the extra meiotic division and the sperm maturation defect.