Navigation Links
Pediatric coding top tips and pediatric CPT changes 2013
Date:1/17/2013

Cyanobacteria belong to the Earth's oldest organisms. They are still present today in oceans and waters and even in hot springs. By producing oxygen and evolving into multicellular forms, they played a key role in the emergence of organisms that breathe oxygen. This has, now, been demonstrated by a team of scientists under the supervision and instruction of evolutionary biologists from the University of Zurich. According to their studies, cyanobacteria developed multicellularity around one billion years earlier than eukaryotes cells with one true nucleus. At almost the same time as multicellular cyanobacteria appeared, a process of oxygenation began in the oceans and in the Earth's atmosphere.

Multicellularity as early as 2.3 billion years ago

The scientists analyzed the phylogenies of living cyanobacteria and combined their findings with data from fossil records for cyanobacteria. According to the results recorded by Bettina Schirrmeister and her colleagues, multicellular cyanobacteria emerged much earlier than previously assumed. Multicellularity developed relatively early in the history of cyanobacteria, more than 2.3 billion years ago, Schirrmeister explains in her doctoral thesis, written at the University of Zurich.

Link between multicellularity and the Great Oxidation Event

According to the scientists, multicellularity developed shortly before the rise in levels of free oxygen in the oceans and in the atmosphere. This accumulation of free oxygen is referred to as the Great Oxidation Event, and is seen as the most significant climate event in the Earth's history. Based on their data, Schirrmeister and her doctoral supervisor Homayoun Bagheri believe that there is a link between the emergence of multicellularity and the event. According to Bagheri, multicellular life forms often have a more efficient metabolism than unicellular forms. The researchers are thus proposing the theory that the newly developed multicellularity of the cyanobacteria played a role in triggering the Great Oxidation Event.

Cyanobacteria occupied free niches

The increased production of oxygen set the Earth's original atmosphere off balance. Because oxygen was poisonous for large numbers of anaerobic organisms, many anaerobic types of bacteria were eliminated, opening up ecological 'niches'. The researchers have determined the existence of many new types of multicellular cyanobacteria subsequent to the fundamental climatic event, and are deducing that these occupied the newly developed habitats. Morphological changes in microorganisms such as bacteria were able to impact the environment fundamentally and to an extent scarcely imaginable, concludes Schirrmeister.


'/>"/>
Contact: Dr. Bettina Schirrmeister
bettina.schirrmeister@bristol.ac.uk
44-117-331-5239
University of Zurich
Source:Eurekalert  

Related biology news :

1. CHOP and BGI strengthen partnership with agreement on pediatric brain tumor collaboration
2. Engineered immune cells produce complete response in child with an aggressive pediatric leukemia
3. Nanotechnology drug delivery shows promise for treatment of pediatric cancer
4. Webcast alert: Molecular Medicine Institute to give new hope to pediatric patients
5. Study shows long-term effects of radiation in pediatric cancer patients
6. First antibiotic stewardship probed in the Journal of the Pediatric Infectious Diseases Society
7. Study: DNA barcoding can ID natural health products
8. Decoding the secrets of balance
9. DNA barcoding verified the discovery of a highly disconnected crane fly species
10. Decoding worm lingo
11. Will changes in climate wipe out mammals in Arctic and sub-Arctic areas?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Pediatric coding top tips and pediatric CPT changes 2013
(Date:1/20/2016)... Jan. 20, 2016  Synaptics Incorporated (NASDAQ: ... solutions, today announced sampling of S1423, its newest ... and small screen applications including smartwatches, fitness trackers, ... round and rectangular shapes, as well as thick ... with moisture on screen, while wearing gloves, and ...
(Date:1/11/2016)... SAN JOSE, Calif. , Jan. 11, 2016 /PRNewswire/ ... developer of human interface solutions, today announced that its ... display driver integration (TDDI) products won two separate categories ... including Best Mobile Innovator and Best Technology Breakthrough. The ... overall system cost, a simplified supply chain, thinner devices, ...
(Date:1/7/2016)... Various factors have contributed to the ... biologics and biosimilars. Some of these factors include ... demand for cost-effective alternatives, growing burden of chronic ... versions of their corresponding patented biologic drugs, and ... and efficacy. The global biosimilars market is estimated ...
Breaking Biology News(10 mins):
(Date:2/6/2016)... ... February 06, 2016 , ... Contact:, Abby Mitchell, ... Excellence in Education Sponsors Teacher Training Program , Bite of Science Dinner Event ... Center for Excellence in Education (CEE) will sponsor a Bite of Science professional ...
(Date:2/5/2016)... 2016 Australian-US drug discovery and development company, Novogen ... of a new Chairman, Mr John O,Connor , and ... James Garner , has also been formally ... Acting CEO, Mr Iain Ross , will resume his ... James Garner , has also been formally appointed to ...
(Date:2/4/2016)... VA (PRWEB) , ... February ... ... cybersecurity conference presented by Bloomsburg University’s Digital Forensics Club, takes place February ... The two-day event features 20+ speakers and activities such as workshops and ...
(Date:2/4/2016)... ContraVir Pharmaceuticals, Inc. (NASDAQ: CTRV ), ... of targeted antiviral therapies, announced today that it will ... be held February 8-9, 2016, at the Waldorf Astoria ... & Healthcare Conference, taking place in New ... James Sapirstein , Chief Executive Officer of ContraVir, will ...
Breaking Biology Technology: