It is called plasmodesm to the conduit that is in a cell wall and that allows molecules to pass between the cytoplasms of the adjacent cells. Plasmodesms function as intercellular communication pathways.
Although some are branched , most of the plasmodesmos are straight . They consist of a plasma membrane , he demotubule (formed by cisterns of the endoplasmic reticulum) and cytosolic fluid .
When plasmodesms develop within the framework of division mobile , are called primary plasmodesms . However, if they appear when the cell wall is already formed, there is talk of secondary plasmodesmos .
In the cells plants, plasmodesmos constitute the most common vehicle for the exchange of substances. This is because they allow the transport of molecules between cells. A) Yes, protein , hormones and sugars , for example, can be directed towards the phloem through plasmodesms.
Plasmodesms can also circulate virus . Therefore, against an infection, plants can block plasmodesms , sending hot to fill the spaces of the ducts.
It can be said that plasmodesms work as gates. These are channels that regulate and promote the communication between plant cells, facilitating the transfer of substances.
Another way to understand plasmodesms is how bridges that connect the cells to each other. Each plasmodesm has between 50 and 60 nanometers in diameter and is able to cross cell walls with a thickness of up to about 90 nanometers . Thanks to plasmodesms, larger molecules can overcome the cell wall, which is hard and rigid.