A  report on NPR yesterday said small bits of microfiber cloth mess up the metabolism of all sorts of microorganisms with possibly deeveastating results, and they are found everywheere, having been rinsed off in the wash. 



On Feb 6, 2012, at 12:01 PM, Kamran Nayeri wrote:

That is great news. But can we perhaps slow down on plastic use anybody?  I am afraid such news will make people even less concerned with crating pile of plastic trash! 

On Fri, Feb 3, 2012 at 11:50 AM, S E Anderson <[log in to unmask]> wrote:
January 30, 2012

Fungi Discovered In The Amazon Will Eat Your Plastic

Polyurethane seemed like it couldn't interact with the earth's normal processes of breaking down and recycling material. That's just because it hadn't met the right mushroom yet.

by Michael J. Coren

The Amazon is home to more species than almost anywhere else on earth. One of them, carried home recently by a group from Yale University, appears to be quite happy eating plastic in airless landfills.

The group of students, part of Yale's annual Rainforest Expedition and Laboratory with molecular biochemistry professor Scott Strobel, ventured to the jungles of Ecuador. The mission was to allow "students to experience the scientific inquiry process in a comprehensive and creative way." The group searched for plants, and then cultured the microorganisms within the plant tissue. As it turns out, they brought back a fungus new to science with a voracious appetite for a global waste problem: polyurethane.

The common plastic is used for everything from garden hoses to shoes and truck seats. Once it gets into the trash stream, it persists for generations. Anyone alive today is assured that their old garden hoses and other polyurethane trash will still be here to greet his or her great, great grandchildren. Unless something eats it.

The fungi, Pestalotiopsis microspora, is the first anyone has found to survive on a steady diet of polyurethane alone and--even more surprising--do this in an anaerobic (oxygen-free) environment that is close to the condition at the bottom of a landfill.

Student Pria Anand recorded the microbe's remarkable behavior and Jonathan Russell isolated the enzymes that allow the organism to degrade plastic as its food source. The Yale team published their findings in the journal Applied and Environmental Microbiology late last year concluding the microbe is "a promising source of biodiversity from which to screen for metabolic properties useful for bioremediation." In the future, our trash compactors may simply be giant fields of voracious fungi.

Who knows what the students in the rainforest will turn up next?

[Michael Coren covers science, economics and the environment. He is the cofounder of the multimedia production studio + newsroom MajorPlanet Studios. He writes from San Francisco.]