biostudies-literatureUnknown14Zhang CConventional biological treatment usually cannot achieve the same high water quality as advanced treatment when conducted under varied temperatures. Here, satisfactory wastewater treatment efficiency was observed in a microalgae-bacteria consortia (MBC) over a wide temperature range because of the predominance of microalgae. Microalgae contributed more toward wastewater treatment at low temperature because of the unsatisfactory performance of the accompanying bacteria, which experienced cold stress (e.g., bacterial abundance below 3000 sequences) and executed defensive strategies (e.g., enrichment of cold-shock proteins). A low abundance of <i>amoA-C</i> and <i>hao</i> indicated that conventional nitrogen removal was replaced through the involvement of microalgae. Diverse heterotrophic bacEnvironmental science and ecotechnology100230https://www.ebi.ac.uk/biostudies/studies/S-EPMC9800309biostudies-literatureRevealing the role of microalgae-bacteria niche for boosting wastewater treatment and energy reclamation in response to temperature.PMC9800309Li XHan MHo SHRen NChen XZhang CChang HfalseRevealing the role of microalgae-bacteria niche for boosting wastewater treatment and energy reclamation in response to temperature.Conventional biological treatment usually cannot achieve the same high water quality as advanced treatment when conducted under varied temperatures. Here, satisfactory wastewater treatment efficiency was observed in a microalgae-bacteria consortia (MBC) over a wide temperature range because of the predominance of microalgae. Microalgae contributed more toward wastewater treatment at low temperature because of the unsatisfactory performance of the accompanying bacteria, which experienced cold stress (e.g., bacterial abundance below 3000 sequences) and executed defensive strategies (e.g., enrichment of cold-shock proteins). A low abundance of <i>amoA-C</i> and <i>hao</i> indicated that conventional nitrogen removal was replaced through the involvement of microalgae. Diverse heterotrophic bac2023-01-01T00:00:00Z2023 Apr2026-05-29T20:17:32.905Z2024-12-04T11:40:26.699ZS-EPMC98003093659087510.1016/j.ese.2022.100230