Skip to comments.
This Tree's a Lady!
livescience ^
| 04 February 2010
Posted on 02/20/2010 2:46:11 PM PST by JoeProBono
Scientists have discovered the female sex hormone progesterone in a walnut tree, shaking up what's known about the different between plants and animals.
Until now, scientists thought that only animals could make progesterone.
A steroid hormone secreted by the ovaries, progesterone prepares the uterus for pregnancy and maintains pregnancy.
A synthetic version, progestin, is used in birth control pills and other medications.
"The significance of the unequivocal identification of progesterone cannot be overstated," write Guido F. Pauli and colleagues in the American Chemical Society's Journal of Natural Products.
"While the biological role of progesterone has been extensively studied in mammals, the reason for its presence in plants is less apparent."
They speculate that the hormone, like other steroid hormones, might be an ancient bioregulator that evolved billions of years ago, before the appearance of modern plants and animals. The new discovery may change scientific understanding of the evolution and function of progesterone in living things.....
(Excerpt) Read more at livescience.com ...
TOPICS: Science
KEYWORDS: godsgravesglyphs; jpb; progesterone; tree
Navigation: use the links below to view more comments.
first 1-20, 21-38 next last
To: JoeProBono
Related to Hillary, I see, by the cankles.
2
posted on
02/20/2010 2:47:28 PM PST
by
aruanan
To: JoeProBono
3
posted on
02/20/2010 2:48:28 PM PST
by
Doogle
(USAF.68-73..8th TFW Ubon Thailand..never store a threat you should have eliminated)
To: aruanan
4
posted on
02/20/2010 2:48:49 PM PST
by
fanfan
(Why did they bury Barry's past?)
To: JoeProBono; SunkenCiv; neverdem
5
posted on
02/20/2010 2:50:04 PM PST
by
fanfan
(Why did they bury Barry's past?)
To: JoeProBono
6
posted on
02/20/2010 2:50:55 PM PST
by
TruthHound
("He who does not punish evil commands it to be done." --Leonardo da Vinci)
To: JoeProBono
I thought plants like soybeans were already known to be loaded with estrogen-like compounds (phytoestrogens).
To: fanfan
8
posted on
02/20/2010 2:53:47 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
To: JoeProBono
9
posted on
02/20/2010 2:54:46 PM PST
by
MS.BEHAVIN
(Women who behave rarely make history)
To: Doogle
10
posted on
02/20/2010 2:55:38 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
To: JoeProBono
To: TruthHound
Yo Woody!
12
posted on
02/20/2010 2:56:58 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
To: JoeProBono
13
posted on
02/20/2010 2:57:32 PM PST
by
fanfan
(Why did they bury Barry's past?)
To: goseminoles
To: James C. Bennett
That’s not wood!
That’s trim silly...
To: goseminoles
16
posted on
02/20/2010 3:05:40 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
To: hellbender
17
posted on
02/20/2010 3:08:10 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
To: MS.BEHAVIN
18
posted on
02/20/2010 3:10:59 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
To: James C. Bennett
19
posted on
02/20/2010 3:13:03 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
To: Lazamataz
20
posted on
02/20/2010 3:14:16 PM PST
by
JoeProBono
(A closed mouth gathers no feet)
Navigation: use the links below to view more comments.
first 1-20, 21-38 next last
Disclaimer:
Opinions posted on Free Republic are those of the individual
posters and do not necessarily represent the opinion of Free Republic or its
management. All materials posted herein are protected by copyright law and the
exemption for fair use of copyrighted works.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson
