Navigation Links
Amber fossil reveals ancient reproduction in flowering plants
Date:1/3/2014

CORVALLIS, Ore. A 100-million-year old piece of amber has been discovered which reveals the oldest evidence of sexual reproduction in a flowering plant a cluster of 18 tiny flowers from the Cretaceous Period with one of them in the process of making some new seeds for the next generation.

The perfectly-preserved scene, in a plant now extinct, is part of a portrait created in the mid-Cretaceous when flowering plants were changing the face of the Earth forever, adding beauty, biodiversity and food. It appears identical to the reproduction process that "angiosperms," or flowering plants still use today.

Researchers from Oregon State University and Germany published their findings on the fossils in the Journal of the Botanical Institute of Texas.

The flowers themselves are in remarkable condition, as are many such plants and insects preserved for all time in amber. The flowing tree sap covered the specimens and then began the long process of turning into a fossilized, semi-precious gem. The flower cluster is one of the most complete ever found in amber and appeared at a time when many of the flowering plants were still quite small.

Even more remarkable is the microscopic image of pollen tubes growing out of two grains of pollen and penetrating the flower's stigma, the receptive part of the female reproductive system. This sets the stage for fertilization of the egg and would begin the process of seed formation had the reproductive act been completed.

"In Cretaceous flowers we've never before seen a fossil that shows the pollen tube actually entering the stigma," said George Poinar, Jr., a professor emeritus in the Department of Integrative Biology at the OSU College of Science. "This is the beauty of amber fossils. They are preserved so rapidly after entering the resin that structures such as pollen grains and tubes can be detected with a microscope."

The pollen of these flowers appeared to be sticky, Poinar said, suggesting it was carried by a pollinating insect, and adding further insights into the biodiversity and biology of life in this distant era. At that time much of the plant life was composed of conifers, ferns, mosses, and cycads. During the Cretaceous, new lineages of mammals and birds were beginning to appear, along with the flowering plants. But dinosaurs still dominated the Earth.

"The evolution of flowering plants caused an enormous change in the biodiversity of life on Earth, especially in the tropics and subtropics," Poinar said.

"New associations between these small flowering plants and various types of insects and other animal life resulted in the successful distribution and evolution of these plants through most of the world today," he said. "It's interesting that the mechanisms for reproduction that are still with us today had already been established some 100 million years ago."

The fossils were discovered from amber mines in the Hukawng Valley of Myanmar, previously known as Burma. The newly-described genus and species of flower was named Micropetasos burmensis.


'/>"/>

Contact: George Poinar, Jr.
poinarg@science.oregonstate.edu
541-752-0917
Oregon State University
Source:Eurekalert  

Related biology news :

1. Scientists find oldest occurrence of arthropods preserved in amber
2. Fossils clarify the origins of wasps and their kin: alderfly ancestors, snakefly cousins
3. Evolution, Civil War history entwine in plant fossil with a tragic past
4. Researchers use CT and 3-D printers to recreate dinosaur fossils
5. Fossil of new big cat species discovered; oldest ever found
6. Visualizing the past: Nondestructive imaging of ancient fossils
7. Emissions pricing revenues could overcompensate profit losses of fossil fuel owners
8. Tell-tale toes point to oldest-known fossil bird tracks from Australia
9. Fossil record shows crustaceans vulnerable as modern coral reefs decline
10. Researchers discover rare fossil ape cranium in China
11. Earthquake swarms; marine Ediacaran fossil traces; Alca obsidian; Mammoth Mountain
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Amber fossil reveals ancient reproduction in flowering plants
(Date:3/23/2017)... Research and Markets has announced the addition of the ... Forecast to 2025" report to their offering. ... The Global Vehicle Anti-Theft System ... over the next decade to reach approximately $14.21 billion by 2025. ... forecasts for all the given segments on global as well as ...
(Date:3/22/2017)... , March 21, 2017 Optimove ... used by retailers such as 1-800-Flowers and AdoreMe, ... — Product Recommendations and Replenishment. Using Optimove,s machine learning ... personalized product and replenishment recommendations to their customers ... on predictions of customer intent drawn from a ...
(Date:3/20/2017)... At this year,s CeBIT Chancellor Dr. Angela Merkel visited the ... the DERMALOG stand together with the Japanese Prime Minster Shinzo Abe. ... largest German biometrics company the two government leaders could see the three ... as DERMALOG´s multi-biometrics system.   Continue Reading ... ...
Breaking Biology News(10 mins):
(Date:6/23/2017)... ... June 23, 2017 , ... ... aircraft flying hobbyists, and the University Aviation Association (UAA), the unifying voice for ... UAS4STEM Collegiate Challenge will encourage teamwork, competition, and success through a STEM-based education ...
(Date:6/22/2017)... Germany (PRWEB) , ... June 22, 2017 , ... ... is taking over the allergy specialists DST Diagnostische Systeme & Technologien GmbH, thereby ... all know someone who suffers from hay fever, urticaria, asthma, atopic eczema or ...
(Date:6/22/2017)... ... ... The first human cell line HeLa, established in 1951, has entered cell ... human cell lines with HeLa cells were published. Until recently, cross-contamination and misidentification of ... associated with dramatic consequences for research. , In this educational webinar, which is ...
(Date:6/20/2017)... ... June 20, 2017 , ... Biologist Dawn Maslar MS ... researching her latest book, Men Chase, Women Choose: The Neuroscience of Meeting, Dating, Losing ... a physiological effect on men. ”The logical next step, in my estimation, was to ...
Breaking Biology Technology: