Table 1.

An outline of the experimental conditions (i.e., with our without iron, with or without D. discoideum, and with or without direct interactions between strains), the predicted strain that should win the competition, the actual outcome, and a brief explanation of the results.

Grown Separately			Grown Together
	+ Iron	- Iron		+ Iron	- Iron
+ D. discoideum	Prediction: Pf2	Prediction: ?	+ D. discoideum	Prediction: Pf2	Prediction: Pf2
	Outcome: Pf2	Outcome: Pf3		Outcome: Pf2	Outcome: Pf3
	Reason: D. discoideum eats Pf3.	Reason: Poor D. discoideum growth under these conditions.		Reason: D. discoideum eats Pf3.	Reason: Poor D. discoideum growth under these conditions.
-D. discoideum	Prediction: ?	Prediction: Pf3	-D. discoideum	Prediction: ?	Prediction: Pf2
	Outcome: Pf3	Outcome: Pf3		Outcome: Pf3	Outcome: Pf2
	Reason: Increased growth presumably due to gacA mutation as observed in Pf2ΔgacA.	Reason: Increased pyochelin production in Pf3.		Reason: Increased growth presumably due to gacA mutation as observed in Pf2ΔgacA.	Reason: Pf2 utilizes the pyochelin produced by Pf3.