Featured Research

from universities, journals, and other organizations

Novel Evolutionary Theory For The Explosion Of Life

Date:
October 27, 2009
Source:
IBEC - Institute for Bioengineering of Catalonia
Summary:
The Cambrian Explosion is widely regarded as one of the most relevant episodes in the history of life on Earth, when the vast majority of animal phyla first appear in the fossil record. However, the causes of its origin have been object of debate for decades. A novel theory formulates that the geologically induced increase on marine calcium, as a result of volcanic activity, might be the key for understanding this important stage in evolution.

The Cambrian Explosion is widely regarded as one of the most relevant episodes in the history of life on Earth, when the vast majority of animal phyla first appear in the fossil record. However, the causes of its origin have been the subject of debate for decades, and the question of what was the trigger for the single cell microorganisms to assemble and organize into multicellular organisms has remained unanswered until now.

Related Articles


Within a longstanding research collaboration between the Institute for Bioengineering of Catalonia and Bielefeld University together with the Friedrich-Miescher-Institute in Basel and the Marine Biological Laboratory at Woods Hole (Massachusetts), Xavier Fernŕndez-Busquets (Barcelona) and Dario Anselmetti (Bielefeld) and their colleagues published online in the journal Molecular Biology and Evolution their biophysical single molecule results on the effect of calcium on the interactions of cell adhesion molecules from marine sponges. These simply organized organisms do not have specialized muscle or nerve cells and nevertheless survived the last 500 million years almost unchanged and are considered a link between the single-cell dominated Precambrian and later multicellular organisms.

The researchers succeeded to show that the massive and sudden surge in the calcium concentration of the Cambrian seawater -- that is believed to be the result of volcanically active midocean ridges -- not only initiated the buildup of calcified shells, but was also mandatory for the aggregation and stabilisation of multicellular sponge structures. This allows, on the other hand, to formulate a novel theory where the geologically induced increase of marine calcium might be the key for understanding the Cambrian Explosion of Life.

This paper constitutes the first research work where single molecule force spectroscopy studies have provided meaningful answers to such a deep evolutionary biology question as the origin of multicellular animals, and might represent a milestone for both disciplines and an example of how multidisciplinarity and collaboration are essential components of excellent contemporary science.


Story Source:

The above story is based on materials provided by IBEC - Institute for Bioengineering of Catalonia. Note: Materials may be edited for content and length.


Journal Reference:

  1. Xavier Fernández-Busquets, André Körnig, Iwona Bucior, Max M. Burger, and Dario Anselmetti. Self-Recognition and Ca2 -Dependent Carbohydrate-Carbohydrate Cell Adhesion Provide Clues to the Cambrian Explosion. Molecular Biology and Evolution, 2009; 26 (11): 2551 DOI: 10.1093/molbev/msp170

Cite This Page:

IBEC - Institute for Bioengineering of Catalonia. "Novel Evolutionary Theory For The Explosion Of Life." ScienceDaily. ScienceDaily, 27 October 2009. <www.sciencedaily.com/releases/2009/10/091016224153.htm>.
IBEC - Institute for Bioengineering of Catalonia. (2009, October 27). Novel Evolutionary Theory For The Explosion Of Life. ScienceDaily. Retrieved March 29, 2015 from www.sciencedaily.com/releases/2009/10/091016224153.htm
IBEC - Institute for Bioengineering of Catalonia. "Novel Evolutionary Theory For The Explosion Of Life." ScienceDaily. www.sciencedaily.com/releases/2009/10/091016224153.htm (accessed March 29, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Sunday, March 29, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Arthropod Fossil Might Be Relative Of Spiders, Scorpions

New Arthropod Fossil Might Be Relative Of Spiders, Scorpions

Newsy (Mar. 29, 2015) — A 508-million-year-old arthropod that swam in the Cambrian seas is thought to share a common ancestor with spiders and scorpions. Video provided by Newsy
Powered by NewsLook.com
Vietnam Rice Boom Piles Pressure on Farmers and the Environment

Vietnam Rice Boom Piles Pressure on Farmers and the Environment

AFP (Mar. 29, 2015) — Vietnam&apos;s drive to become the world&apos;s leading rice exporter is pushing farmers in the fertile Mekong Delta to the brink, say experts, with mounting costs to the environment. Duration: 02:35 Video provided by AFP
Powered by NewsLook.com
Raw: Lioness Has Rare Five-Cub Litter

Raw: Lioness Has Rare Five-Cub Litter

AP (Mar. 27, 2015) — A lioness in Pakistan has given birth to five cubs, twice the usual size of a litter. Queen gave birth to two other cubs just nine months ago. (March 27) Video provided by AP
Powered by NewsLook.com
Jockey Motion Tracking Reveals Racing Prowess

Jockey Motion Tracking Reveals Racing Prowess

Reuters - Innovations Video Online (Mar. 26, 2015) — Using motion tracking technology, researchers from the Royal Veterinary College (RVC) are trying to establish an optimum horse riding style to train junior jockeys, as well as enhance safety, health and well-being of both racehorses and jockeys. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins