Table 2.
UV‐protective effect of tested substances on Beauveria bassiana conidia after UV‐B exposure
| Agar assay | Leaf disc assay | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Substance | Estimate | SE | df | t‐value | P‐value | Estimate | SE | df | t‐value | P‐value |
| Polysorbate 80 | 0.021 | 0.08 | 52 | 0.263 | 0.790 | 0.325 | 0.09 | 148 | 3.535 | 0.001 |
| Green tea | −0.277 | 0.08 | 52 | −3.342 | 0.002 | 0.210 | 0.09 | 148 | 2.423 | 0.017 |
| Black tea | 0.294 | 0.08 | 52 | 3.597 | 0.001 | 0.070 | 0.09 | 148 | 0.771 | 0.441 |
| Humic acid K | 0.221 | 0.08 | 52 | 2.751 | 0.008 | 0.732 | 0.09 | 148 | 7.834 | 0.000 |
| Humic acid Na | 0.301 | 0.08 | 52 | 3.850 | 0.000 | 0.689 | 0.09 | 148 | 7.581 | 0.000 |
| Lignin | 0.145 | 0.08 | 52 | 1.799 | 0.078 | 0.645 | 0.09 | 148 | 7.118 | 0.000 |
| R. luteola | 0.305 | 0.08 | 52 | 3.742 | 0.001 | −0.198 | 0.09 | 148 | −2.187 | 0.030 |
| Colza oil | 0.177 | 0.08 | 52 | 2.198 | 0.032 | 0.580 | 0.09 | 148 | 6.371 | 0.000 |
| Sesame oil | 0.173 | 0.08 | 52 | 2.197 | 0.033 | 0.567 | 0.09 | 148 | 6.281 | 0.000 |
| Skim milk | −0.045 | 0.08 | 52 | −0.574 | 0.569 | 0.596 | 0.09 | 148 | 6.618 | 0.000 |
| Yeast extract | −0.018 | 0.08 | 52 | −0.225 | 0.823 | 0.435 | 0.09 | 148 | 4.825 | 0.000 |
| Kaolin | 0.068 | 0.08 | 52 | 0.857 | 0.400 | 0.497 | 0.09 | 148 | 5.500 | 0.000 |
| Zeolite | −0.112 | 0.08 | 52 | −1.381 | 0.172 | 0.270 | 0.09 | 148 | 2.981 | 0.003 |
A linear mixed effect model was built using logarithmic colony‐forming unit (CFU) counts as the response variable and the interactions of the UV‐protective substances tested and the treatment (UV exposure yes/no) as explanatory variables. Only the statistics of the interaction terms (compared with the unprotected control) are displayed. The UV‐protective effect of a substance is indicated by a significant interaction term.