Endophytic Actinomycetes: A Novel Source of Potential Acyl Homoserine Lactone Degrading Enzymes
Table 1
Relative HSL-degrading activity of actinomycetes isolated from rhizospheric and endophytic samples.
Location
No. of isolates
Relative HSL-degrading activity* (%)
0
>0–50
>50–75
>75–87.5
>87.5–93.8
>93.8–96.9
>96.9–100
Rhizospheric samples
Bangkok
278
182
54
16
11
8
4
3
Chanthaburi
13
6
5
0
0
1
1
0
Nongbualumpoo
3
2
0
0
0
0
0
1
Prachinburi
27
12
9
3
3
0
0
0
Rayong
23
15
8
0
0
0
0
0
Total
344
217
76
19
14
9
5
4
Total (percentage)
217 (63.1%)
127 (36.9%)
Endophytic samples
Bangkok
43
29
12
0
1
1
0
0
Nakhonpathom
29
20
8
1
0
0
0
0
Phetchabun
60
15
25
0
10
1
4
5
Total
132
64
45
1
11
2
4
5
Total (percentage)
64 (48.5%)
68 (51.5%)
*The activity of each isolate was qualitatively determined by comparing with known concentrations of C10HSL (200, 100, 50, 25, 12.5, 0.625, and 0 pmole).
