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Table 5 Diameter of inhibition zone of the culture supernatant and crude lipopeptides (10 mg/mL) produced by FJAT-46737 against Ralstonia solanacearum FJAT-91 and the content of lipopeptide under different culture medium

From: Biocontrol of tomato bacterial wilt by the new strain Bacillus velezensis FJAT-46737 and its lipopeptides

 

Medium

A

B

C

D

E

F

Diameter of inhibition zone (mm)

supernatant

–

–

15.75 ± 0.38ab

14.93 ± 0.77b

16.36 ± 0.60a

12.77 ± 0.88c

Lipopeptides

13.88 ± 2.54b

–

21.41 ± 1.60a

19.15 ± 0.78a

19.75 ± 0.93a

15.67 ± 1.00b

Yield of lipopeptide in the supernatant (mg/L)

iturin

0.53 ± 0.20cd

0.31 ± 0.09d

0.98 ± 0.02b

0.68 ± 0.14c

1.99 ± 0.18a

0.38 ± 0.02d

fengycin

22.17 ± 11.94b

9.03 ± 1.69b

58.66 ± 9.81a

50.37 ± 12.46a

24.34 ± 2.75b

9.17 ± 1.21b

surfactin

0.65 ± 0.42a

0.55 ± 0.23a

1.39 ± 0.06a

1.21 ± 0.35a

0.61 ± 0.06a

0.59 ± 0.13a

Total lipopeptides

23.34 ± 12.54b

10.07 ± 1.80b

61.04 ± 9.86a

52.27 ± 12.70a

27.54 ± 3.90b

10.22 ± 1.29b

  1. Note: Values were expressed as mean ± standard deviation (n = 3)
  2. The difference letter in the same row indicated that the difference between the grades is significantly through Duncan test (p < 0.05). The effects of medium components on the antibacterial activities and contents of lipopeptides were carried out at 25 °C