Oxygen from viruses??

I thank my colleague Suhail Rafudeen for alerting me to this:

 “Some Of Our Oxygen Is Produced By Viruses Infecting Micro-organisms In The Oceans

ScienceDaily (Apr. 6, 2008) – Some of the oxygen we breathe today is being produced because of viruses infecting micro-organisms in the world’s oceans, scientists heard April 2, 2008 at the Society for General Microbiology’s 162nd meeting.

About half the world’s oxygen is being produced by tiny photosynthesising creatures called phytoplankton in the major oceans. These organisms are also responsible for removing carbon dioxide from our atmosphere and locking it away in their bodies, which sink to the bottom of the ocean when they die, removing it forever and limiting global warming.

“In major parts of the oceans, the micro-organisms responsible for providing oxygen and locking away carbon dioxide are actually single celled bacteria called cyanobacteria,” says Professor Nicholas Mann of the University of Warwick. “These organisms, which are so important for making our planet inhabitable, are attacked and infected by a range of different types of viruses.”

The researchers have identified the genetic codes of these viruses using molecular techniques and discovered that some of them are responsible for providing the genetic material that codes for key components of photosynthesis machinery.

“It is beginning to become to clear to us that at least a proportion of the oxygen we breathe is a by-product of the bacteria suffering from a virus infection,” says Professor Mann. “Instead of being viewed solely as evolutionary bad guys, causing diseases, viruses appear to be of central importance in the planetary process. In fact they may be essential to our survival.”

Viruses may also help to spread useful genes for photosynthesis from one strain of bacteria to another.

Adapted from materials provided by Society for General Microbiology, via EurekAlert!, a service of AAAS”

Fascinating concept: viruses as an essential link in the circle of life?!  Not so far-fetched, though: just because we know them largely because of their propensity to cause, and our fascination with, diseases that affect us and our livestock and crops…doesn’t mean that is all there is.

Viruses have been around as long as any other form of life, and it would be strange indeed if some form(s) of commensalism and/or symbiosis had not evolved.

…and see here for some fascinating speculations on the possible involvement of viruses with the origin of eukaryotes.

About these ads

Tags: , , ,

3 Responses to “Oxygen from viruses??”

  1. Global Warming » Oxygen from viruses?? Says:

    […] Ed Rybicki wrote an interesting post today on Oxygen from viruses??Here’s a quick excerptThese organisms are also responsible for removing carbon dioxide from our atmosphere and locking it away in their bodies, which sink to the bottom of the ocean when they die, removing it forever and limiting global warming. … […]

  2. goitse Says:

    interesting indeed

  3. They DO get everywhere, don’t they? « ViroBlogy Says:

    […] on previous evidence that retroviruses probably helped in the evolution of placental mammals, that much of the planet’s oxygen may be due to viruses, and that viruses often aid hosts in developing resistance against […]

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


Follow

Get every new post delivered to your Inbox.

Join 619 other followers

%d bloggers like this: