Fig. 5
![Fig. 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13568-016-0292-y/MediaObjects/13568_2016_292_Fig5_HTML.jpg)
Identification of degradation of AHLs by S. cerevisiae. The S. cerevisiae strain and medium solution were incubated with 2 μM 3OC6-HSL (a) and C12-HSL (b) for 12, 24, 36, and 48 h, and then the culture supernatants were spotted onto an agar plate (containing X-Gal and IPTG). The medium solution without S. cerevisiae were also added 2 μM 3OC6-HSL and C12-HSL as positive control. The residual AHLs were detected by A. tumefaciens A136 (blue stain)