Anther development—The long road to making pollen
2022年9月22日 · L2 derivatives are thought to proceed through the plan shown in some cases, with the initial “founder” cell called an archesporial cell that divides to make primary parietal cells as well as germinal cells (what are called archesporial cells in grasses).
Plant germline formation: common concepts and developmental flexibility ...
2015年1月15日 · During formation of the female sexual reproductive lineage, typically a single somatic cell per ovule acquires reproductive fate and differentiates to form an archesporial cell. It can be distinguished from the surrounding cells by …
Anther and pollen development: A conserved developmental …
Anther development in Arabidopsis has been divided into 15 stages, which commence from division of a single archesporial cell; defined cell types and adaxial–abaxial polarity are established, resulting in the formation of the mature microsporangia (Scott et al. 2004).
Walbot Lab at Stanford University
In 2019 Nelms & Walbot 10.1126/science.aav6428 including the cover picture traced germinal cell ontogeny in maize anthers, from the mitotic proliferating archesporial cells, through meiotic commitment to the leptotene/zygotene transition in prophaseI.
From Arabidopsis to rice: pathways in pollen development
2009年3月25日 · Archesporial cell number in the anther is strictly controlled by a similar mechanism to that seen in the shoot apical meristem. It is regulated, at least in part, by a Leu-rich repeat receptor kinase EXTRA SPOROGENOUS …
Defining the developmental program leading to meiosis in maize
2019年4月5日 · In maize anthers, hypoxia triggers somatic cells to differentiate as archesporial cells (1), the first cell type in the meiotic lineage. After a ~3-day period of transit-amplifying mitotic divisions, archesporial cells cease mitosis, become pollen mother cells, and …
Cell fate determination during sexual plant reproduction
4 天之前 · The archesporial cell development in maize is triggered by hypoxia, indicating the role of microenvironmental conditions in cell fate determination. A hypoxic condition (c. 1.5% oxygen) around the tassel exists during archesporial cell fate setting in maize. Treatment of fertile anthers with reducing condition leads to precocious and excess ...
Evolution and diversity of the angiosperm anther: trends in function ...
2021年6月26日 · Specification of the anther is initiated by periclinal division of the L2 layer to form archesporial (AR) cells. The AR cells divide to form two cell layers: the reproductive primary sporogenous (PS) cells that later become the microspores and the somatic primary parietal (PP) cells that differentiate into secondary parietal (SP) cells (Canales ...
Spore formation in plants: SPOROCYTELESS and more | Cell …
2014年12月16日 · In flowering plants, sporogenesis is initiated in both male and female reproductive tissues by the differentiation of sub-epidermal cells in the anther and ovule primordia, called archesporial...
Tapetal cell fate, lineage and proliferation in the
2010年7月15日 · The four microsporangia of the flowering plant anther develop from archesporial cells in the L2 of the primordium. Within each microsporangium, developing microsporocytes are surrounded by concentric monolayers of tapetal, middle layer and endothecial cells.