A group of scientists at the University of Wisconsin-Madison, led by Mike Susman, discovered a hormone that regulates the growth of plant cells at the molecular level. Before that, very little was known, in particular, that the only way of cell growth is through their expansion.
The researchers conducted their experiments on the Arabidopsis plant, which belongs to the cabbage family. As a result, the details of how specific hormones affect cell growth have become known. The opening holds great promise. Over time, a person will be able to influence the growth of plants, especially those that feed us.
Scientists also found that after cell division, they expand in strict accordance with the genetic program and differentiate them. In this case, the cells remain immobile, thanks to the cellulose cell walls. This is their main difference from animal cells, which have the ability to migrate inside the body.
It was found that Arabidoptis has about 30 thousand genes, of which 450 determine the structure of the protein. 430 receptors have also been identified that affect cell growth, and about which practically nothing is known.