New research touches a nerve

August 20, 2008

University of Queensland researchers have traced the origins of one of the most important steps in animal evolution – the development of nerves.

Professor Bernie Degnan, from UQ's School of Integrative Biology, together with PhD student Gemma Richards and colleagues from France, have traced the evolution of the nerve cell by looking for pre-cursors in, of all places, the marine sponge.

"Sponges have one of the most ancient lineages and don't have nerve cells," Professor Degnan said.

"So we are pretty confident it was after the sponges split from trunk of the tree of life and sponges went one way and animals developed from the other, that nerves started to form.

"What we found in sponges though were the building blocks for nerves, something we never expected to find."

Professor Degnan said the science involved came from the relatively new area of paleogenomics, which is the study of ancestral genomes to paint a more accurate picture of animal evolution.

"What we have done is try to find the molecular building blocks of nerves, or what may be called the nerve's ancestor the proto-neuron," he said.

"We found sets of these genes in sponges, when we really didn't expect it.

"But what was really cool is we took some of these genes and expressed them in frog and flies and the sponge gene became functional – the sponge gene directed the formation of nerves in these more complex animals.

Source: Research Australia

Related Stories

Recommended for you

Quantifying the impact of volcanic eruptions on climate

August 31, 2015

Large volcanic eruptions inject considerable amounts of sulphur in the stratosphere which, once converted into aerosols, block sun rays and tend to cool the surface of the Earth down for several years. An international team ...

Researchers unveil DNA-guided 3-D printing of human tissue

August 31, 2015

A UCSF-led team has developed a technique to build tiny models of human tissues, called organoids, more precisely than ever before using a process that turns human cells into a biological equivalent of LEGO bricks. These ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.