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Revisiting the Female Germline and Its Expanding Toolbox
- Pinto, Sara C., Mendes, Marta A., Coimbra, Sílvia, Tucker, Matthew R.
- Trends in plant science 2019 v.24 no.5 pp. 455-467
- Arabidopsis thaliana, cell communication, cell cycle, diploidy, females, germ cells, models, ovules
- The Arabidopsis thaliana ovule arises as a female reproductive organ composed solely of somatic diploid cells. Among them, one cell will acquire a unique identity and initiate female germline development. In this review we explore the complex network that facilitates differentiation of this single cell, and consider how it becomes committed to a distinct developmental program. We highlight recent progress towards understanding the role of intercellular communication, cell competency, and cell-cycle regulation in the ovule primordium, and we discuss the possibility that distinct pathways restrict germline development at different stages. Importantly, these recent findings suggest a renaissance in plant ovule research, restoring the female germline as an attractive model to study cell communication and cell fate establishment in multicellular organs.