Plant cell wall is one of parts of the plant cell. It is very tough, flexible and sometimes it is also have a very fairly rigid layer that means the things surround it, is some types of the cells it self. Meanwhile, it surrounds the cell membrane had and will be provided by these cells as the structural support of the needs protein and protection of the plants itself. Beside that, the cell wall that acts as a filtering mechanism that will be used to filter anything come in to the plant itself.
Then the main point of its function of the cell wall is using to act as a pressure vessel or even preventing over the expansion when the water itself enter to the cell and the cell walls are going to be found in those plants, fungi and of course those prokaryotic cells not in mycoplasmas. Then the material that is exist in the cell wall itself will be varies between some species and it can differ and depending on the cell type itself and its developmental stage of the plant cell. For the bacteria, the peptidoglycan will form the cell wall. Meanwhile the cell walls have some various compositions that might be formed by glycoprotein S-layers, pseudopeptidoglycan or even its polysaccharides.
Moreover the fungi possess its plant cell wall that is made by the glucosamine polymerchitin and of course algae will typically possess the walls that made by those materials above. But it is not like an ordinary thing that the diatoms have a cell wall that can be composed by using the biogenic silica and it is also often using other accessory such as molecules that are quite easy to be found to its cell wall
A. The rigidity of the plant cell wall
In almost all the types of the plants, the cell wall is commonly flexible, that means it will bend than holding a fixed shape of theirs, it has also considerable tensile of the strength and its apparent rigidity of its primary plant tissues will be enabled by its cell walls. Meanwhile the hydraulic of the turgor pressure got by this plant cell wall creates this rigidity and go along with its wall structure. Then its flexibility itself can be seen when the plants wilt and the stems and leaves will begin to drop from its plants or even in seaweeds for example that begin to bend in the water currents.
Nowadays the primary cell wall of the plants for mostly will be freely permeable and it will also permit the passage of the small molecules and it small proteins to have gone with exclusion estimated size that will be started from 30 to be 60 kDa. The key nutrients of the plant cell wall, especially the needs of the water and its carbon dioxide will be distributer throughout its plant from the cell wall to its apoplastic flow of the cell. beside that the PH will also be an important thing needed by the plants to govern the transport of its molecules through its cell walls.
The existence of this plant cell wall is very important to be protected and considered its existence. Why? Simply because mostly it will cause some effects toward the plants if it is not well protected by themselves and they will die at then of the day without its cell wall that has a function to protect what they have done.