Table 3.
Bacterial Strain | attTn7 locus insertiona | Average CFU/IJ ± standard deviation (n=3)
|
||
---|---|---|---|---|
S. carpocapsae | S. anatoliense | S. websteri | ||
XnSc 081 | none | 42.07 ± 11.01A | 34.40 ± 4.12A | 26.31 ± 6.20A |
XnSc 081 nilD6::Tn5 | none | 0.10 ± 0.04B | 0.36 ± 0.06B | 0.12 ± 0.15B |
XnSc 081 nilD6::Tn5 | nilD-Sc | 54.40 ± 7.95A | 38.60 ± 4.77A,C | 44.10 ± 7.03A,C |
XnSc 081 nilD6::Tn5 | nilD-Sa | 1.09 ± 0.24B | 1.08 ± 0.40B | 0.45 ± 0.23B |
XnSc 081 nilD6::Tn5 | nilD-Sw | 0.03 ± 0.02B | 0.25 ± 0.17B | 0.02 ± 0.14B |
XnSa | none | 77.90 ± 16.58A,C | 59.40 ± 4.13C | 55.50 ± 16.61C,D |
XnSw | none | 63.55 ± 12.97A,C | 28.45 ± 6.66A | 74.57 ± 4.74D |
A Tn7 transposon carrying nilD loci from XnSc (nilD-Sc), XnSa (nilD-Sa), or XnSw (nilD-Sw) was integrated at the attTn7 locus. Different letters indicate significant differences between bacterial strains for colonization within each nematode species: p<0.05 using one-way repeated measures ANOVA (Prism v2.0, GraphPad, La Jolla, CA) with Tukey’s post-test. Colonization levels achieved by each bacterial strain in the three nematode species were not significantly different except XnSw for which colonization of S. anatoliense nematodes was significantly lower than those of the other two nematode species (not shown).