Someone please correct me.
The DNA would only get refreshed with a new seed. That means that all haden trees are still copies of copies of copies of the original DNA. How long and how many times can the DNA be copied before it develops defects?
Is a trees lifetime dependent upon the birth of the original seed, or when it was grafted?
https://en.wikipedia.org/wiki/Tree In botany, a tree is a perennial plant with an elongated stem, or trunk, supporting branches and leaves in most species. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth
The growth time from the seed would be the calculation for life of the first Haden tree.
Once a graft is cut the graft is not a tree but a graft.
Once the graft takes on a rootstock (potential tree for true large tree) you can call it a Haden grafted on whatever rootstock you used for your new tree.
Continue doing this for many new trees if the graft takes. If the graft fails, you are killing grafts (not trees).
A tree is usually killed by environment changes or pathogens or other predators (humans). Some examples:
https://pubs.ext.vt.edu/430/430-210/430-210_pdf.pdfAlthough all trees eventually die, The Haden is now thousands of trees with new trees being produced from grafts constantly.
DNA change with time on new grafts/new Haden trees/??? Are there any "Haden" trees with new genes being passed on to new type 2 or 3 Haden lines??? Is your Haden tree now really exactly the same genes as the original Haden???
In humans, we usually die with DNA/RNA changes. This might happen with the new grafted tree that becomes the new Haden. However, some believe gene change within the graft can occur from the new root section or trunk of the new tree influencing the graft and a beneficial DNA change. With new genes being swapped and passed on in future grafts.
1.
http://scienceblogs.com/notrocketscience/2009/05/01/unintentional-genetic-engineering-grafted-plants-trade-gen/ "This marker sequence turned up in all the cells where genes had been swapped, which means that the plants were trading in very large chunks of DNA, or even their entire chloroplast genomes. The genes from the main nuclear genome, however, showed no signs of movement."
2.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4269114/"With increasing pressure the bark of each in contact with the other wears away, bringing their cambia in contact, leading eventually to a functional graft union. Most aerial grafts occur when a branch from one tree is “caught” in the forked branch of another tree, which is analogous to the compression between adjacent roots (K. W. Mudge, personal communication, with permission).
Assessment of the evolutionary significance of grafting involves discussion at two levels: its benefits for plant survival and its potential role in the formation of new species."
3.
https://www.newscientist.com/article/2079813-farmers-may-have-been-accidentally-making-gmos-for-millennia/"Then, in 2014, another study found that the entire nucleus of a cell, containing the main genome, could be transferred across grafts. The transferred nucleus can be added to an existing cell nucleus – fusing the two genomes and potentially creating a new species.
Triple whammy
Now a team led by Pal Maliga of Rutgers University in New Jersey has shown that cells also swap mitochondria – energy-generating organelles with a small genome of their own – across grafts.
And once entire mitochondria from one plant get into the cells of another, they mix their DNA with that of the existing mitochondria."
This means all three kinds of plant genome can be swapped via grafts.
4.
http://www.the-scientist.com/?articles.view/articleNo/27377/title/Grafts-guide-gene-exchange/"When two plants are grafted together, they share much more than water and minerals: They also swap genetic material"