Fig. 2 in Review paper Stimulation of Plant Growth through Interactions of Bacteria and Protozoa: Testing the Auxiliary Microbial Loop Hypothesis

Fig. 2. Effects of Acanthamoeba castellanii on root diameter size classes of a grass (Lolium perenne). Grass plants were grown for 20 days in presence (+ Amo) and absence (– Amo) of amoebae on 1% agar with ½ Murashigge and Skoog medium in Petri dishes with a diverse soil bacterial community (Kreuzer, unpublished).