Problem:

I see some popular science articles on the plastic eating bacteria and fungi appearing on the web since 2009. Most of the articles praise discoveries, because such organisms promise to break down plastics which were previously thought to be indestructible. However, from the articles it is hard to understand the total number/names of promising organisms that can biodegrade plastic.
Additionally, it's hard to gather from the dated articles if these plastic eating organisms have passed safety testing - for example that they don't break down plastic into something volatile and toxic.

Question: Which organisms as of 2013 are seriously considered for solving the plastic in landfills problem?

Please provide some names of the organisms.