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,
'/>"/>

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

Page: 1 2

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:10/18/2014)... of 2,000 patients referred for evaluation of suspected ... diagnosis for 25 percent, including detection of a ... contributing to disease, according to a study appearing ... released to coincide with the American Society of ... the exons or coding regions of thousands of ...
(Date:10/17/2014)... . Why do ... to reproduce? And why are there two sexes anyway? These ... of the research journal Molecular Human Reproduction published ... Bielefeld University Bielefeld has compiled this special issue on sperm ... to copulate with several males in quick succession – chimpanzees ...
(Date:10/16/2014)... wages war on the human body. Battles are ... In pancreatic cancer, this stalemate—known as tumor dormancy—can ... malignant, a phenomena that is poorly understood. ... laboratory of Salvatore Torquato, a Professor of Chemistry ... surrounding tumor dormancy and the switch to a ...
Breaking Biology News(10 mins):Whole-exome sequencing shows potential as diagnostic tool 2Sperm wars 2Modeling tumor dormancy 2
... CHAMPAIGN, Ill. Up to 4 percent of the methane ... have been unable to identify the source of this potent ... culprit: a bit of "weird chemistry" practiced by the most ... the journal Science . The researchers who made ...
... blanket of snow in the winter can help boost ... is one way to ensure that blanket coverage, according ... Agricultural Research Service (ARS) soil scientist David Huggins conducted ... accumulation and soil water levels across entire fields. ARS ...
... NY) Researchers at Albert Einstein College of Medicine ... mechanism that the immune system uses to respond to infection. ... lead to new strategies for boosting effectiveness of all vaccines. ... journal Immunity . Grgoire Lauvau, Ph.D.One way the ...
Cached Biology News:Study identifies prime source of ocean methane 2Study identifies prime source of ocean methane 3No-till farming helps capture snow and soil water 2Early activation of immune response could lead to better vaccines 2
(Date:10/22/2014)... October 22, 2014 WriteResult, LLC ... – has been working with a team of researchers ... Haven Farms Community Farming Collaborative to provide electronic questionnaire ... The study, which started in May, aims to ... provides participants weekly exposure to and participation in urban ...
(Date:10/22/2014)... October 22, 2014 Physicians Choice ... cardiovascular pharmacogenetics menu, which enables healthcare providers to ... With PCLS’s evidence-based results, healthcare providers are better ... their therapy, while minimizing risks for adverse drug ... according to the FDA [1] more than 2.2 ...
(Date:10/22/2014)... 2014 /PRNewswire/ - iCo Therapeutics ("iCo" or "the Company") ... for its Oral Amphotericin B program.  The company ... vitro work involving samples from HIV/AIDS patients ... complete pre clinical studies and regulatory filings to ... trial, utilizing approximately $700,000 of funding and technological ...
(Date:10/22/2014)... and HONG KONG , ... rare disease therapeutics enterprise, announced today that rare disease ... company as vice president, research. Dr. McKew brings more ... key leadership positions at the National Institutes of Health, ... acquisition by Wyeth). Dr. McKew will lead aTyr,s efforts to ...
Breaking Biology Technology:myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 3iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 2iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 3aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3
... Md., May 20 Martek Biosciences Corporation (Nasdaq: ... of its second quarter of fiscal 2009 on June 3, ... the release, at 4:45 p.m. ET Martek will conduct a ... interested parties may listen to the call live via webcast ...
... Launch into High Growth Brazilian Market for Aesthetic ... announced today the receipt of ANVISA clearance to ... in Brazil. ANVISA (Agencia Nacional de Vigilancia ... regulatory agency charged with clearing all applications to ...
... Bulletin Board: SNBP) ("Sinobiopharma" or, the "Company") is pleased to ... year and guidance on its projected financial performance for the ... , In Q1 2009, ... $0.68 million), representing a 127 percent increase year-over-year from the ...
Cached Biology Technology:Aesthera Announces ANVISA Clearance to Market Photopneumatic Platforms in Brazil 2Aesthera Announces ANVISA Clearance to Market Photopneumatic Platforms in Brazil 3Sinobiopharma Updates on Progress; Projects Increases in Sales and Revenues In 2009 2Sinobiopharma Updates on Progress; Projects Increases in Sales and Revenues In 2009 3
Use our experts and resources to develop reagent systems for your applications....
Request Info...
Ultra-sensitive, non-radioactive detection of Protein G. Measure Protein G levels quickly and easily....
IC50: 190 pg/ml · Limit of detection: 60 pg/ml...
Biology Products: