HOME >> BIOLOGY >> NEWS
The origin of the brain lies in a worm

The rise of the central nervous system (CNS) in animal evolution has puzzled scientists for centuries. Vertebrates, insects and worms evolved from the same ancestor, but their CNSs are different and were thought to have evolved only after their lineages had split during evolution. Researchers from the European Molecular Biology Laboratory (EMBL) in Heidelberg now reveal that the vertebrate nervous system is probably much older than expected. The study, which is published in the current issue of Cell, suggests that the last common ancestor of vertebrates, insects and worms already had a centralised nervous system resembling that of vertebrates today.

Many animals have evolved complex nervous systems throughout the course of evolution, but their architectures can differ substantially between species. While vertebrates have a CNS in the shape of a spinal cord running along their backs, insects and annelid worms like the earthworm have a rope-ladder-like chain of nerve cell clusters on their belly side. Other invertebrates on the other hand have their nerve cells distributed diffusely over their body. Yet, all these species descend from a common ancestor called Urbilateria. If this ancestor already possessed a nervous system, what it might have looked like and how it gave rise to the diversity of nervous systems seen in animals today is what Detlev Arendt and his group study at EMBL. To do so, they investigate the nervous system of a marine annelid worm called Platynereis dumerilii.

"Platynereis can be considered a living fossil," says Arendt, "it still lives in the same environment as the last common ancestors used to and has preserved many ancestral features, including a prototype invertebrate CNS."

Arendt and his group investigated how the developing CNS in Platynereis embryos gets subdivided into the regions that later on give rise to the different CNS structures. The regions are defined by the unique combination of regulatory genes expressed, whi
'"/>

Contact: Anna-Lynn Wegener
wegener@embl.de
49-622-138-7452
European Molecular Biology Laboratory
20-Apr-2007


Page: 1 2

Related biology news :

1. Discredited Korean embryonic stem cells true origins revealed
2. New research proves single origin of humans in Africa
3. The origin of perennial water-ice at the South Pole of Mars
4. Surprising origin of cells internal highways
5. Nobel scientists Craig Mello and John Mather to speak on origins of life and universe
6. Inflammation is at the origin and progression of diseases such as diabetes or cancer
7. Smithsonian scientists connect climate change, origins of agriculture in Mexico
8. Pediatric cancer stem cell identified: understanding the origin of ERMS
9. Spud origin controversy solved
10. Could USA presidential DNA trail reveal Middle-Eastern origins?
11. NYUCD study links tooth decay and gum infections to ethnicity and country of origin

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The origin the brain lies worm

(Date:8/4/2015)... 04, 2015 ... announced the addition of the "Digital ... Service), Sub-Segment (Computer Forensics, Network Forensics, Mobile ... Service, Vertical and Region - Global Forecast ... By Component (Hardware, Software, and ...
(Date:8/4/2015)... N.Y., Aug. 4, 2015  AMRI (NASDAQ: AMRI ) today ... 30, 2015. Highlights: , Second quarter contract ... from 2014 , Adjusted contract margins of ... of $0.22, including a $0.05 decrease in EPS from royalties in ... $16 million "We are very pleased to present ...
(Date:8/3/2015)... Aug. 3, 2015 Synaptics, Inc. (Nasdaq: ... today announced that members of the executive management team ... Crest Global Technology Leadership Forum on Tuesday, August 11, ... be held at the Sonnenalp Resort in ... may include forward-looking information. An audio webcast of the ...
Breaking Biology News(10 mins):Digital Forensics Market - The Market Represents a Compound Annual Growth Rate (CAGR) of 11.3% From 2015 to 2020 2AMRI Announces Second Quarter 2015 Results 2AMRI Announces Second Quarter 2015 Results 3AMRI Announces Second Quarter 2015 Results 4AMRI Announces Second Quarter 2015 Results 5AMRI Announces Second Quarter 2015 Results 6AMRI Announces Second Quarter 2015 Results 7AMRI Announces Second Quarter 2015 Results 8AMRI Announces Second Quarter 2015 Results 9AMRI Announces Second Quarter 2015 Results 10AMRI Announces Second Quarter 2015 Results 11AMRI Announces Second Quarter 2015 Results 12AMRI Announces Second Quarter 2015 Results 13AMRI Announces Second Quarter 2015 Results 14AMRI Announces Second Quarter 2015 Results 15AMRI Announces Second Quarter 2015 Results 16AMRI Announces Second Quarter 2015 Results 17AMRI Announces Second Quarter 2015 Results 18AMRI Announces Second Quarter 2015 Results 19AMRI Announces Second Quarter 2015 Results 20AMRI Announces Second Quarter 2015 Results 21AMRI Announces Second Quarter 2015 Results 22AMRI Announces Second Quarter 2015 Results 23AMRI Announces Second Quarter 2015 Results 24
(Date:8/5/2015)... ... August 05, 2015 , ... ... transition from legacy tubes, with 2D barcode labels on the lid, to modern ... tube 2D barcodes in 1 second, using FluidX’s IntelliCode software, which deals easily ...
(Date:8/5/2015)... ... August 05, 2015 , ... MTI-GlobalStem, ... the launch of an updated corporate identity, including new company name, logo and ... in 2009. The company moved into a new, joint facility in 2014 to ...
(Date:8/4/2015)... ... 05, 2015 , ... Spirax Sarco , Inc. has ... The handbook provides a complete range of information needed to evaluate and ... product offering into an easy-to-navigate single edition,” says Dawn Dukes, Public Relations & ...
(Date:8/4/2015)... BIOA ), a leader in renewable materials today ... 30, 2015. Highlights included: , The Sarnia plant achieved ... cost of the Sarnia plant is projected to be ... of the estimate communicated at the onset of the ... announced commercial collaborations in two targeted industry segments; with ...
Breaking Biology Technology:RURO Announces FreezerPro® 7 Integration with Top-down 2D barcode scanners by FluidX 2MTI-GlobalStem Announces Updated Company Identity and Website 2MTI-GlobalStem Announces Updated Company Identity and Website 3Spirax Sarco releases Product Handbook 2BioAmber Reports Second Quarter 2015 Financial Results 2BioAmber Reports Second Quarter 2015 Financial Results 3BioAmber Reports Second Quarter 2015 Financial Results 4BioAmber Reports Second Quarter 2015 Financial Results 5BioAmber Reports Second Quarter 2015 Financial Results 6BioAmber Reports Second Quarter 2015 Financial Results 7BioAmber Reports Second Quarter 2015 Financial Results 8BioAmber Reports Second Quarter 2015 Financial Results 9BioAmber Reports Second Quarter 2015 Financial Results 10BioAmber Reports Second Quarter 2015 Financial Results 11BioAmber Reports Second Quarter 2015 Financial Results 12
Cached News: