Old Trees
| Use attributes for filter ! | |
| Artists | Edvard Munch |
|---|---|
| Locations | Private collection |
| Created | 1925 |
| Periods | Expressionism |
| Genres | Pastoral |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2066848 |
About Old Trees
New map of ancient trees an opportunity for conservation
... Now, armed with this new map of Old Trees, scientists like Victoria and the rest of us could help to keep more of them alive...
Secrets of the '1000-year-old trees' unlocked
... They found both young and Old Trees, produce protective chemicals for the control of pollution by germs or dryness...
Michael Morpurgo on keep right on to the end of the road
... October you find them now among the last of the Old Trees in the park, be careful of the wild winds of fortune that could weaken or uproot you...
Awkward questions about slavery, the tourists in the South
... grey gravel surrounds a pristine, expansive lawn area, lined with Old Trees dripping with Spanish moss, the spots of the sun...
The mystery of the screaming students in Malaysia
......
Secrets of the '1000-year-old trees' unlocked
Ginkgo leaves in the autumn
scientists have discovered The Secret of how the Ginkgo tree can be More Than 1000 years.
A study found The Tree with the protective chemicals to fend off disease and drought.
And, unlike many other plants, its genes are not programmed to trigger inexorable decline, if the youth is over.
The Ginkgo is found in parks and gardens all over The World , but is on the verge of extinction in The Wild .
"is The Secret to maintaining a healthy immune system and a species that does not have a predetermined senescence (aging) program," said Richard Dixon of the University of North Texas, Denton.
"such As Ginkgo trees age, they show no signs of weakening their ability to defend themselves from stresses. "
A Man goes on the foliage, under the gingko trees, when autumn arrives in the Chinese capital, Beijing, Ginkgo biloba (Ginkgo Biloba)researchers in the United States and China examined Ginkgo trees at the age of 15 to 667, extracting tree-rings and analysis of cells, bark, leaves and seeds. They found both young and Old Trees , produce protective chemicals for the control of pollution by germs or dryness.
These include antioxidants, antibiotics, and plant hormones, the stressors in protection against dryness and other environmental. Genetic studies showed that genes, the the topic of not aging automatically turn on at a certain point In Time , as in other plants, such as grasses and annual plants.
So while a tree may appear to be lived in for centuries, crumbling due to frost damage or lightning strikes, all of the processes necessary for a healthy growth and are still functional.
Ginkgo trees grow widely in gardens, including at RHS Wisley, UKDr. Dixon knows, the image is similar to that of other long-lived trees, such as the giant redwood, the Packed wood "with anti-microbial chemicals".
"Hopefully our study will encourage others to dig deeper in what seems to be the important characteristics for the durability in Ginkgo and other long-lived trees," he said.
Commenting on the study, Mark surge, head of horticulture and environmental Sciences (RHS), said the oldest living tree in The World - a bristlecone pine (Pinus Longaeva ) estimated that More Than 4,800 years old.
"Apart from a consistent supply of food, light and water, the ability of living in such a high age, thought to have slow growth, cellular adaptations, and relative protection from secondary influences, such as pests and diseases, climate extremes and catastrophic physical damage", he said.
such As the United Kingdom embarks on an ambitious tree-planting, understanding the mix of tree species provide the largest ecosystem of the rewards in the long term, and where they should be best planted, is likely to be increasingly important, he added.
The research is published in the journal.
to follow Helen.
plants, trees
Source of news: bbc.com
