sieve plate

Between the sieve-tube members are sieve plates, which have pores to allow molecules to pass through.

These porous connections are called sieve plates.

Those symptoms are related to callose deposition at the sieve plates and subsequent degeneration of the phloem.

In Vicia it was shown that forisomes are associated to the endoplasmic reticulum at sieve plates.

However, the callose and a phloem protein will be moved through the nearest sieve plate where they will form a plug.

Aperture in adult stage, terminal, radially cribrate, with a convex trematophore (sieve plate) pierced by numerous irregular openings.

Sieve tube allow free diffusion of soluble, organic substances across sieve plates due to the presence of large number of sieve pores.

At the interface between two sieve tube members in angiosperms are sieve plates, pores in the plant cell walls that facilitate transport of materials between them.

Sieve tubes are joined end-to-end with perforate end-plates between known as sieve plates, which allow transport of photosynthate between the sieve elements.