Early successional patterns of bacterial communities in soil microcosms reveal changes in bacterial community composition and network architecture, depending on the successional condition

•Soil bacterial communities rapidly change upon abiotic or biotic perturbations.•Pesticide amendment increase cooperation, eukaryote inhibition increases antagonism.•Stochastic turnover precedes structural convergence in early successional stages.•Perturbation type has no effect in keystone soil bacteria persistence.•Presence of eukaryotes or pesticide modulates bacterial keystones interaction.