[url]http://www.sciencedaily.com/releases/2013/10/131024143321.htm[/url]
[IMG]http://images.sciencedaily.com/2013/10/131024143321.jpg[/IMG]
[QUOTE][B]Stem cells are crucial for the continuous generation of new cells. Although the importance of stem cells in fuelling plant growth and development still many questions on their tight molecular control remain unanswered. Plant researchers at VIB and Ghent University discovered a new step in the complex regulation of stem cells.[/B]
Lieven De Veylder said, "Our data suggest that certain organizing stem cells in plant roots are less sensitive for DNA-damage. Those cells hold an original and intact DNA copy which can be used to replace damaged cells if necessary. Animals rely on a similar mechanism but most likely plants have employed this in a more optimized manner. This could explain why many plants can live for more than hundreds of years, while this is quite exceptional for animals."
[B]Quiescent organisers of plant growth[/B]
Plant growth and development depend on the continuous generation of new cells. A small group of specialized cells present in the growth axes of a plant is driving this. These so-called stem cells divide at a high frequency and have the unique characteristic that the original mother cell keeps the stem cell activity while the daughter cell acquires a certain specialization. Besides these stem cells, plant roots also harbor organizing cells. These organizing cells divide with a three- to ten-fold lower frequency, therefore often referred to as quiescent center cells. The organizing cells control the action of the surrounding stem cells and can replace them if necessary.
[B]A new molecular network[/B]
For almost 20 years, scientists all over the world have been studying the action of the stem cells and that of their controlling organizing cells. Until now it was not known how quiescent and actively dividing cells could co-exist so closely and which mechanisms are at the basis of the quiescent character. Plant researchers at VIB and Ghent University have now identified a new molecular network that increases our understanding of stem cell regulation and activity.
Central in this process is the discovery of a new protein, the ERF115 transcription factor. The scientists demonstrated that the organizing cells barely divide because of the inhibition of ERF115 activity. When the organizing cells need to divide to replace damaged surrounding stem cells, ERF115 gets activated. ERF115 then stimulates the production of the plant hormone phytosulfokine which in turn activates the division of the organizing cells. Thus, the ERF115-phytosulfokine network acts as a back-up system during stress conditions which are detrimental for the activity of stem cells.[/QUOTE]
Duh, of course a plant would be good at stem cells.
how to live past 100: become a plant
Hang on a minute, being really simple here...
Get stem cells of person at young age
Person getting old, inject stem cells
Old person lives longer?
one time I tried caring for a plant. I watered it for 2 weeks before it even sprouted through the ground, then it was almost a foot tall overnight, and then 3 days later it was dead
[QUOTE=butre;42649901]one time I tried caring for a plant. I watered it for 2 weeks before it even sprouted through the ground, then it was almost a foot tall overnight, and then 3 days later it was dead[/QUOTE]
This is quite the story.
[QUOTE=sloppy_joes;42649909]This is quite the story.[/QUOTE]
the moral of the story is that I have lived longer than a plant
[QUOTE=butre;42649921]the moral of the story is that I have lived longer than a plant[/QUOTE]
That means you're a plant murderer.
They're coming for you...
[I]Slowly...[/I]
[QUOTE=butre;42649921]the moral of the story is that I have lived longer than a plant[/QUOTE]
Does this mean you know the secrets of immortality now?
[QUOTE=yellowoboe;42649980]Does this mean you know the secrets of immortality now?[/QUOTE]
Don't be an annual-type plant.
Humans only ages and die because of stem cell degradation, this is why trees can live for thousands of years because their stem cells get replaced when the stem cells break down, and those stem cells in turn copy themselves to all other cells in a plant?
Considering we can allready grow entire body parts with just stem cells and re-write bacteria DNA, i'd doubt it would be too hard to replicate stem cells.
Now the rich assholes can live longer!
[QUOTE=iwancoppa;42650087]Considering we can allready grow entire body parts with just stem cells and re-write bacteria DNA, i'd doubt it would be too hard to replicate stem cells.
Now the rich assholes can live longer![/QUOTE]
Presumably the rich would want more than their anuses to live longer.
when i die i want my anus to be preserved expanding and contracting for eternity
I wonder how old I am in plant years
Time to eat trees to absorb their powers.
[editline]26th October 2013[/editline]
Why do you think beavers are immortal?
So, in a word, backup copies. Lots and lots of backup copies.
[QUOTE=Lurklet;42646439]how to live past 100: become a plant[/QUOTE]
[img]http://img593.imageshack.us/img593/465/a0wl.jpg[/img]
[IMG]http://upload.wikimedia.org/wikipedia/commons/4/43/October_12_2005_Alpine_Loop_Utah_United_States.JPG[/IMG]
[QUOTE]The root system of Pando, at an estimated 80,000 years old, is among the oldest known living organisms.[/QUOTE]
[URL="http://en.wikipedia.org/wiki/Pando_%28tree%29"]http://en.wikipedia.org/wiki/Pando_%28tree%29[/URL]
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