I'm not referring to this article - I'm referring to the general case of plastic-eating microbes. Plastic eating organisms are not new. Even certain types of mealworms will eat styrofoam...
Articles like these are published several times a year, but I don't think I've seen any studies on the potential impact.
This article mentions it, but there are no accompanying references.
http://theconversation.com/how-plastic-eating-bacteria-actua...