Table 1.

Expression of selected genes of P. sylvestris after exposure to sawfly sex pheromones and egg deposition

Relative transcript abundance (mean ± SE) after treatment with pure hexane (the pheromone solvent; hexane control), with hexane and subsequent egg depositions (hexane + eggs), with pheromones dissolved in hexane only (pheromone), or with pheromone and subsequent egg deposition (pheromone + eggs); n = 5 to 8 trees for each treatment. Green highlights: transcript abundance significantly decreased as compared to hexane control. Yellow highlights: transcript abundance significantly increased as compared to hexane control. Within a line: numbers in bold with different lowercase letters denote statistical differences (P ≤ 0.05).

^*Days after start of pheromone exposure for 24 h; 2d = directly after 1 d of egg deposition.

^†Expression values determined in untreated control trees did not differ from those in the “hexane control” (SI Appendix, Table S7).

^‡Significance values (P) were calculated by Kruskal−Wallis H tests (compare SI Appendix, Table S4). Significant differences between 2 treatments were evaluated by a post hoc Conover−Iman test with a Benjamini−Hochberg correction for multiple comparisons.