Navigation Links
UT Knoxville professor finds unexpected key to flowering plants' diversity
Date:7/28/2008

KNOXVILLE -- What began with an off-the-cuff curiosity eventually led Joe Williams to hang from the limbs of a tree 80 feet above the soil of northeastern Australia.

The things Williams, a University of Tennessee, Knoxville, researcher found there may help explain the amazing diversity in the world's flowering plants, a question that has puzzled scientists from the time of Charles Darwin to today.

Williams' findings, published online this week by the Proceedings of the National Academy of Sciences, show that the ability of flowering plants -- known as angiosperms -- to quickly and efficiently move sperm from pollen to egg through a part of the plant was the key to their evolutionary diversity.

His curiosity was based in the time it takes from when pollen lands on a plant to the time that its' seed is fertilized. Williams noticed a recurring theme in the research papers he read:

"They would usually describe how fertilization was occurring, but they never tell you much about timing," said Williams, an assistant professor of ecology and evolutionary biology at UT Knoxville.

For a seeded plant to fertilize, pollen that lands on the flower must grow a tube to carry sperm to the egg. In non-flowering plants, the pathway is usually short, because the pollen tube must destroy cells in its path, which is a time-consuming process. In flowering plants, though, pollen tubes are able to cover longer distances to the egg by essentially "squeezing" between cells. It is a trait that Williams says is vital to their diversification.

"The longer a plant takes to fertilize, for the pollen to reach the egg," said Williams, "the more chance there is for it to die."

When he studied the data he had collected through the years, Williams found that older lineages of flowering plants -- those on lower branches of the angiosperms' evolutionary family tree -- grew shorter tubes of pollen than those that we
'/>"/>

Contact: Jay Mayfield
jay.mayfield@tennessee.edu
865-974-9409
University of Tennessee at Knoxville
Source:Eurekalert  

Page: 1 2

Related biology news :

1. National Institutes of Health award Williams professor $217,710 research grant
2. NJIT architect professor advocates best-building practices for high wind regions
3. Professor Brian Greenwood awarded first Hideyo Noguchi Africa Award
4. McMaster University engineering professor receives Humboldt Research Award
5. USF professor gives historical look at physiology and WWII air war
6. NYU dental professor discovers biological clock linking tooth growth to other metabolic processes
7. MIT professor to discuss future of biofuels
8. ASU professor helps solve mystery of glassy water
9. Professors video series explains all facets of Earth
10. JDRF awards University of Copenhagen professor with grant to conduct innovative diabetes research
11. TAU professor finds global warming is melting soft coral
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UT Knoxville professor finds unexpected key to flowering plants' diversity
(Date:8/12/2015)... Florida , August 12, 2015 ... pace of mobile payment innovation and advanced biometrics technology ... replace the way consumers rely on using their credit ... with reinventing the future for payment services led by ... NXTD ), :  Google, Inc. (NASDAQ: GOOG ...
(Date:8/10/2015)... , August 10, 2015 ... Eye Tracking Technology for more than two decades, announces ... for integration into all consumer display formats. The SMI ... integration of eye tracking into consumer tablets, laptops, desktop ... smart glasses. Omnivision,s leading sensor technology contributes to the ...
(Date:8/6/2015)... Calif. , Aug. 6, 2015 ... developer of human interface solutions, today announced collaboration ... technologies on Windows 10. Microsoft leveraged Synaptics, deep ... the operating system. Through stringent ... are fully certified with Microsoft,s Precision TouchPad (PTP) ...
Breaking Biology News(10 mins):Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 2Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 3Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 4Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 5Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 6SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 3Synaptics Chosen for Human Interface Co-Development on Windows 10 2
... of continental drift provides a good model for understanding terrestrial ... successfully shed light on processes up to 3 billion years ... the earth and crust formation before that point and through ... ago. This is the conclusion of Tomas Naraa of the ...
... tissue using cells derived from the amniotic fluid is ... UCL Institute of Child Health. The paper ... cells derived from the fluids which surround the fetus ... The treatment resulted in longer survival in mice affected ...
... Inc., a Los Angeles based investment banking company, today ... Alliqua, Inc.  During the term of the engagement, WestPark ... and finance, private and public equity and debt financing, ... provide introductions to investors. About Alliqua, ...
Cached Biology News:New understanding of terrestrial formation has significant and far reaching future implications 2Potential new approach to regenerating skeletal muscle tissue 2WestPark Capital, Inc. Engaged By Alliqua, Inc. 2
(Date:8/31/2015)... and SHANGHAI , ... privately-held biopharmaceutical company developing next-generation antibiotics, today announced ... clinical study for its lead drug candidate MRX-I. ... treat drug-resistant bacteria such as MRSA and VRE, ... better tolerated therapeutic option than currently available oxazolidinone ...
(Date:8/31/2015)... (PRWEB) , ... August 31, 2015 , ... ... as a high priority in the drug development approval process. Thus, innovator companies ... This year, Regis Technologies, Inc., a Chicago-based CMO, has been hosting multiple educational ...
(Date:8/30/2015)... , August 31, 2015 , ... Frau   für chirurgische   Behandlung     ... 7-90   werden für eine   verheerende   Geburtsverletzung ... behandeln und die Anzahl ausgebildeter Chirurgen in Kenia bis ... gab heute bekannt, dass  Action on Fistula  seit ihrem ...
(Date:8/28/2015)... Pittsburgh, PA (PRWEB) , ... August 28, 2015 ... ... Program Chairman, Chuck Gardner, has organized and will present a session on chemical ... September 2. This conference and exposition is Asia’s largest analytical and scientific instruments ...
Breaking Biology Technology:MicuRX Reports Positive Top-Line Results In Phase 2 Clinical Trial For Novel Antibiotic MRX-I In Complicated Skin And Soft Tissue Infections 2Regis Shares Expert Advice on Impurities in Drug Development 2Regis Shares Expert Advice on Impurities in Drug Development 3Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 2Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 3Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 4Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 5U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 2U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 3
... This release is available in German . When ... light particles, so-called photons, carry sufficient energy, the electrons can be ... was explained by Einstein more than hundred years ago. Until now, ... the atom immediately after the impact of the photon. This point ...
... ... case study that provides a sustainable solution for odor and pathogen ... of beneficial microbial applications. These results are intended to address the ... who recently agreed to identify and investigate thousands of factory farms ...
... ... in Latin America regarding approvals of Stemedica’s allogeneic adult stem cell products for use in ... , ... 24, 2010 -- Stemedica Cell Technologies, Inc., a leader in allogeneic adult stem ...
Cached Biology Technology:Delayed time zero in photoemission 2Delayed time zero in photoemission 3Effective Odor and Pathogen Control in Livestock Operations Revealed in New Case Study 2Stemedica Announces the Appointment of Dr. Csar Amescua Garcia as Medical and Regulatory Affairs Director – Latin America 2
...
... 220 utilizes utilizies CTI Molecular Imaging's ... superior resolution, sensitivty, and a large ... the flexibility to image multiple mice ... microPET is a dedicated small animal ...
... StatMatic I provides a convenient and affordable ... work. Used with an eight-port disposable manifold, ... possible with multi-channel pipettes. The eight-port manifold, ... volumes of 100, 200, 250, or 300mL ...
... HRP Stabilizing Diluent (MOPS Buffered) has ... Horseradish Peroxidase conjugates in solution. HRP ... and maintains the conformation of the antibody ... Product is filtered at 0.2 microns., ...
Biology Products: