Figure 2.

Transconjugant, donor, and recipient numbers during exposure to (a) 0 mM, (b) 0.25 mM, and (c) 1 mM of Zn(NO₃)₂, from inoculation [t0] measured hourly for 8 h [t8] and additionally measured after 24 h [t24]. (d) Transconjugant numbers and (e) conjugation frequencies at different concentrations of Zn(NO₃)₂. Pairwise comparison of transconjugant numbers and conjugation frequencies at different concentrations was performed via Student’s T-test. P-values were adjusted using the Bonferroni correction. No significant differences were observed.