Navigation Links
Plants kick-start evolutionary drama of Earth's oxygenation
Date:10/8/2010

TEMPE, Az. - An international team of scientists, exploiting pioneering techniques at Arizona State University, has taken a significant step toward unlocking the secrets of oxygenation of the Earth's oceans and atmosphere.

Evolution of the Earth's multitude of organisms is intimately linked to the rise of oxygen in the oceans and atmosphere. The new research indicates that the appearance of large predatory fish as well as vascular plants approximately 400 million years ago coincided with an increase in oxygen, to levels comparable to those we experience today. If so, then animals from before that time appeared and evolved under markedly lower oxygen conditions than previously thought.

The researchers, including collaborators from Harvard, Denmark, Sweden and the United Kingdom, made use of a method developed at ASU by Ariel Anbar, a professor in the department of chemistry and biochemistry and the School of Earth and Space Exploration in the College of Liberal Arts and Sciences, and his research group. The method can be used to estimate global oxygen levels in ancient oceans from the chemical composition of ancient seafloor sediments.

Their important findings are presented in a paper published in this week's online Early Edition of the Proceedings of the National Academy of Sciences (PNAS), titled "Devonian rise in atmospheric oxygen correlated to radiations of terrestrial plants and large predatory fish."

"There has been a lot of speculation over the years about whether or not oxygen in the atmosphere was steady or variable over the last 500 million years," explained Anbar, who leads ASU's Astrobiology Program. "This is the era during which animals and land plants emerged and flourished. So it's a profound question in understanding the history of life. These new findings not only suggest that oxygen levels varied, but also that the variation had direct consequences for the evolution of complex life."

The Ea
'/>"/>

Contact: Jenny Green
jenny.green@asu.edu
480-965-1430
Arizona State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Commercial aquatic plants offer cost-effective method for treating wastewater
2. UC Riverside biochemists devise method for bypassing aluminum toxicity effects in plants
3. Reproducing early and often is the key to rapid evolution in plants
4. MSU scientists find new gene that helps plants beat the heat
5. Researchers design artificial cells that could power medical implants
6. When under attack, plants can signal microbial friends for help
7. Current mass extinction spurs major study of which plants to save
8. Scientists unveil mechanism for up and down in plants
9. New hybrid plants could prompt more prodigious pepper production in Southwest
10. Extreme weather postpones the flowering time of plants
11. Even plants benefit from outsourcing
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Plants kick-start evolutionary drama of Earth's oxygenation
(Date:8/5/2015)... Calif. , Aug. 5, 2015 The ... continuous growth in applications, penetration into newer sectors, and ... year. The global biosensors space has seen the entry ... the market so far. (Photo - ... & Sullivan, Analysis of the Global Biosensors Market ...
(Date:8/3/2015)... 3, 2015 Synaptics, Inc. (Nasdaq: SYNA ... announced that members of the executive management team will ... Global Technology Leadership Forum on Tuesday, August 11, 2015 ... held at the Sonnenalp Resort in Vail, ... include forward-looking information. An audio webcast of the event ...
(Date:7/31/2015)... SHENZHEN, China , 31 de julho de 2015 ... Genômica (ICG-10, www.icg-10.org ) será realizada pela BGI de ... China . A conferência está ... inauguração em 2006, a ICG se tornou uma das ... e um dos encontros científicos mais dinâmicos, entusiastas e ...
Breaking Biology News(10 mins):Innovative Biosensors Incite Use in Non-Traditional Applications 2Innovative Biosensors Incite Use in Non-Traditional Applications 3Innovative Biosensors Incite Use in Non-Traditional Applications 4A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 2A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 3
... Office has granted an exclusive license of a novel ... Inc., which plans to initiate early-stage human clinical trials ... Gary Landreth, PhD, the Riuko and Archie G. Co ... PhD, co-founded ReXceptor after discovering that bexarotene (a medication ...
... and Oxford, UK Cancer cells are a problem for ... blithely metastasize to set up shop in places where they ... this way is a tumor suppressor named p53. This protein ... those that are damaged beyond repair. Not surprisingly, p53,s critical ...
... across the UK has shown a grass hybrid species ... The BBSRC-funded scientists, from Rothamsted Research, the James Hutton ... at Aberystwyth University, Lancaster University and the University of ... perennial ryegrass ( Lolium perenne ) with a closely ...
Cached Biology News:Research spinoff ReXceptor gets license for Alzheimer's treatment 2Reviving a foe of cancer 2New grass hybrid could help reduce the likelihood of flooding 2
(Date:8/31/2015)... Tampa, FL (PRWEB) , ... August 31, 2015 ... ... will bring together the world's most successful food and beverage processors, equipment manufacturers ... its competencies in product inspection and industrial weighing and formulation for manufacturers of ...
(Date:8/30/2015)... England , August 31, 2015 ...   einer Frau   für chirurgische   Behandlung     ... von 7-90   werden für eine   verheerende ... 1200 Frauen behandeln und die Anzahl ausgebildeter Chirurgen in ... Astellas gab heute bekannt, dass  Action on Fistula ...
(Date:8/28/2015)... ... August 28, 2015 , ... Proove Biosciences , a ... International Spine Intervention Society’ s 23rd Annual Scientific Meeting (ASM). The ASM ... a focus on evidence-based research and clinical application, the event gathered industry thought ...
(Date:8/28/2015)... ... August 28, 2015 , ... ... Wade McKenna, DO, announced today that the use of sterile, dehydrated amniotic tissue ... healing of an otherwise non-healing surgical knee wound. , The case involved a ...
Breaking Biology Technology:METTLER TOLEDO Hosts Food Safety Educational Center at 2015 PROCESS EXPO 2Über 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 5Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 2Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 3Proove Biosciences Presents New Research Study at the International Spine Intervention Society’s Annual Scientific Meeting 4Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 2Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 3Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 4
... , , , , ... Imagenetix, Inc. (OTC Bulletin Board: IAGX) announced today results for its first fiscal ... from the $1,394,000 reported for the same period last year. , ... compared to a net profit for the same period of the prior fiscal year ...
... , , , LEXINGTON, ... for Genome Resources (NCGR) has selected febit,s DNA-capture method, HybSelect(TM), ... of the most devastating childhood diseases with the ultimate goal ... genetic diseases in prospective parents. , , ...
... and VANCOUVER, Aug. 10 /PRNewswire-FirstCall/ - OncoGenex Pharmaceuticals, ... that the United States Patent and Trademark Office ... entitled "Chemo-and Radiation-sensitization of Cancer by Antisense TRPM-2 ... cancer drug candidate, OGX-011, to treat certain cancers. ...
Cached Biology Technology:Imagenetix, Inc. Reports First Quarter 2010 Results 2Imagenetix, Inc. Reports First Quarter 2010 Results 3Imagenetix, Inc. Reports First Quarter 2010 Results 4Imagenetix, Inc. Reports First Quarter 2010 Results 5The National Center for Genome Resources Studies Childhood Diseases Using febit's DNA Capture Method 2The National Center for Genome Resources Studies Childhood Diseases Using febit's DNA Capture Method 3OncoGenex Pharmaceuticals Announces Issuance of Key Patent for OGX-011 2OncoGenex Pharmaceuticals Announces Issuance of Key Patent for OGX-011 3