“…What is also unknown is the effect of belowground plant growth-promoting microbes (PGPMs) on stormwater management of VGS. In our previous studies, we systematically examined two well-acknowledged PGPMs, i.e., Rhizophagus irregularis and Bacillus amyloliquefaciens (Idriss et al, 2002;Lenoir et al, 2016), in vegetated roofs and facades for their survival, mutual influence, and plant growth-promoting effects (Xie et al, 2020(Xie et al, , 2022. R. irregularis is an arbuscular mycorrhizal fungus (AMF), and Bacillus amyloliquefaciens is a rod-shaped Gram-positive bacterium belonging to plant growth-promoting rhizobacteria (PGPR).…”