It's still evolution. It's change in response to the environment. LGT (Lateral Gene Transfer) is a Big Deal in the bacterial world - it evolved. You can amplify the effect by causing a selection pressure (ie, put an antibiotic in the flask). But, you can also have de novo point mutations that cause antibiotic resistance - that's done thousands, if not millions of times a day all over the planet. The clever little protists have figured out an even more efficient way to do things.
That's certainly evolution in action.