2017年4月27日 · The main difference between guard cells and subsidiary cells is that guard cells are found in the epidermis of the plant, forming stoma whereas subsidiary cells are found surrounding guard cells, assisting in the functioning of guard cells.

Guard cells and subsidiary cells are two distinct cell types that work together to regulate stomatal opening and closing in plant leaves. While guard cells directly control the size of the stomatal pore, subsidiary cells provide support, protection, and coordination to ensure the optimal functioning of guard cells.

Subsidiary cells may support guard cell function by offering a mechanical advantage that facilitates guard cell movements, and/or by acting as a reservoir for water and ions. In other cases, subsidiary cells introduce or enhance certain morphologies (such as sunken stomata) that affect gas exchange.

2020年7月2日 · Subsidiary cells may support guard cell function by offering a mechanical advantage that facilitates guard cell movements, and/or by acting as a reservoir for water and ions. In other cases, subsidiary cells introduce or enhance certain morphologies (such as sunken stomata) that affect gas exchange.

2024年2月1日 · Subsidiary cells are specialized cells that are adjacent to the guard cells and morphologically differ from the ordinary epidermal cells (Esau, 1965). They serve as a storage for inorganic ions involved in the stomatal movements as the main osmolytes.

2023年5月17日 · Definition: Subsidiary cells (SCs) are cells that are associated with guard cells (GCs) but differ in size, shape, arrangement, and/or content from pavement cells (Pant, 1965; Esau, 2006). While a functional association is implied, the original definition is purely anatomical and morphological.

2017年3月17日 · In grasses, a developmental innovation-the addition of subsidiary cells (SCs) flanking two dumbbell-shaped guard cells (GCs)-is linked to improved stomatal physiology. Here, we identify a transcription factor necessary and sufficient for SC formation in the wheat relative Brachypodium distachyon.

Surrounding cells are thought to support stomatal movements as solute reservoirs and to shape stomatal kinetics through backpressure on the guard cells. Their variety may also reflect a substantial diversity in function.

CST1 encodes a functional glucose transporter expressed in subsidiary cells, and the E81K mutation strongly impairs the oligomerization and glucose transporter activity of CST1.

2024年3月4日 · By contrast, a very active diversification is evident across multicellular streptophytes in the epidermal cells adjacent to the guard cells, sometimes referred to as subsidiary cells and what we identify broadly as surrounding cells (Clark et al., 2022; Sack, 1987).