What Is Callose in Plants?

Callose is a polysaccharide in the form of β-1,3-glucan with some β-1,6-branches and it exists in the cell walls of a wide variety of higher plants. Callose plays important roles during a variety of processes in plant development and/or in response to multiple biotic and abiotic stresses.

What is callose in pollen?

Callose is a cell wall component that is dynamically deposited and degraded during pollen development. ... Callose is a polymer formed primarily of Glc units connected by β1-3-linkages. It is transiently deposited at sites of wounding, plasmodesmata, and pollen cell walls (Chen and Kim, 2009).

What is the role of callose in Microsporogenesis?

Temporary callose walls act as a physical barrier to prevent premature swelling and bursting of microspores; moreover, they appear to participate in the formation of the primexine by providing a mold for pollen exine construction during microsporogenesis. ... Thus, callose plays an essential role in meiosis.