“…On the other hand, N-acyl-homoserine lactones are a class of molecules involved in bacterial quorum sensing. The amendment of C6-and C8-homoserine lactones in anammox reactors increased the production of EPS and abundance of metabolism-associated genes (Liu et al, 2021;Zhang et al, 2021). These early and promising studies encourage further metabolomic studies into low-temperature anammox cultures.…”