Photo: Koichi Kamoshida / Getty Images
Scientists from the U.S. and China found that the relict plant Ginkgo, there are specific tissues, capable of continuous growth for hundreds and thousands of years. This feature, apparently, makes this kind of living beings virtually immortal. This publication reports Science Alert.
The researchers studied the activity of the cambium — tissue, which contains cells of meristem, provides plant growth in thickness and forms the annual rings. Determined the level of hormones and the activity of genes related to disease resistance, as well as transcription factors involved in cell death. It turned out that with the age of the tree, these figures do not change, although the thickness of annual rings decreased sharply during the first 100-200 years and then continued to decline in the next few hundred years.
However, the secondary growth of the tree (associated with a branching stem and roots) did not show any decrease between 10-year and 600-year old Ginkgo. This indicates that the vascular cambium can save the ability to grow for hundreds of years and millennia and avoid aging at the level of the whole organism.
Video, photo All from Russia.