Question

How is the dictyostelium discoideum communicate with each other and what is the motility and chemotaxis in dictyostelium discoideum

please explain detailed

Answer 1

Dictoselium discoideum is a soil dwelling amoeba , it belongs to phylum Amoebozoa. It is also known as slime mould.

It is a eukaryote that transitions from collection of unicellular amoeba into multicellular slug and later into a fruiting body.

The slug is an multicellular mass formed by the aggregation of starved cells.

The amoeba comprising the slug diffrentiate according to spatial locations relative to each other as in the case of regulative embryos, this is a kind of mutual communication.

Discoidin mediates substrate adhesion analogous to mamalian fibronectin.

Cells nearing end of exponential growth sense accumulation of prestarvation factor and conditioned medium factor.

Starvation causes cells to migrate to each other to form mounds of cells.

The mound diffrentistes into a slug and moves to optinsl temperature.

Chemotaxis- cell adapt to mean concentration of chemoattractant and respond to positive deviations of mean chemoattractant.

Cells react chemotactically to cyclic amp, pterin and folic acid.

Based on presence of these chemoattractants, they respond to chemotactic movement.

This is a well established organism for social motility and they are adapted to cyclic amp, folic acid and pterin fo chemotactoc movement either by temporal or spatial response.