Your questions are so broadly framed that I have had problems answering them. I found this survey document that may help you narrow down the species of termite that interests you:http://www.israbat.ac.ma/Termite/Document%202.pdf
I am guessing that chlorpyrifos is the organophosphate compound of interest to you, though I have no way of knowing this for sure. I found at least one reference to fungi metabolizing this compound:http://books.google.com/books?id=n-Jkpa ... #PPA138,M1
My impression is that you will have to do some serious research to first pin down the species of termites of interest to you and the fungi type of interest, and the pesticide of interest. When you know these it should be much easier to look for studies on the metabolism of the pesticide by the specific fungus of interest.
This sounds like an exciting project that could have real importance to people. I wish you every success with it!