First discovery of the female sex hormone progesterone in a plant

February 4, 2010
Leaves of the walnut tree contain progesterone, the female sex hormone, discovered for the first time in a plant. Credit: iPhoto

In a finding that overturns conventional wisdom, scientists are reporting the first discovery of the female sex hormone progesterone in a plant. 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 discovery is reported in the American Chemical Society's Journal of Natural Products.

"The significance of the unequivocal identification of progesterone cannot be overstated," the article by Guido F. Pauli and colleagues, states. "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.

Scientists previously identified progesterone-like substances in plants and speculated that the hormone itself could exist in plants. But researchers had not found the actual hormone in plants until now.

Pauli and colleagues used two powerful laboratory techniques, and mass spectroscopy, to detect in leaves of the Common Walnut, or English Walnut, tree.

They also identified five new progesterone-related steroids in a plant belonging to the buttercup family.

Explore further: Effects of progesterone on Alzheimer's disease

More information: The full text of their paper is available at .

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not rated yet Feb 05, 2010
Ancient potions (magic), medicines uses these kind of plants having extra hormones, some are used to convert gender from female to male in womb, as X-Y chromosome is a Weak Sugar bond, X can be converted to Y by rearranging the sugars.
Some plants are used to bring to life.
Some ancient plants have Transition elements which give super human properties.
A treatment of eye cornea by grinding teeth is used by doctors frequently, in ancient way it was described using skull bone and 10 other Rare plants in medicine name "Garudanjanam", this restores,regrows a lost/removed eye

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