TY - JOUR
T1 - Quorum quenching affects biofilm development in an anaerobic membrane bioreactor (AnMBR)
T2 - from macro to micro perspective
AU - Xu, Boyan
AU - Ng, Tze Chiang Albert
AU - Huang, Shujuan
AU - He, Meibo
AU - Varjani, Sunita
AU - Ng, How Yong
PY - 2022/1
Y1 - 2022/1
N2 - The first experimental study on the influence of acyl homoserine lactones (AHLs) degrading quorum quenching (QQ) consortium on the dynamics of biofilm bio-communities (i.e., from suspended biomass to initial biofilm and mature biofilm) in an anaerobic membrane bioreactor (AnMBR) at a microscopic scale (denoted as QQAnMBR) was reported. QQ did not change the overall bacterial community of the suspended biomass, inclusive of the key functional bacteria. Moreover, the retarded initial biofilm formation was attributed to not only the lower extracellular polymeric substance content of suspended biomass, but also the decelerated colonization of the AHL-regulated low-abundance in suspended biomass but pioneering keystone taxa Rhodocyclaceae;g- on membrane surface. However, pioneering fouling-related taxa such as Sulfurovum and Rhodocyclaceae;g- still played paramount roles in the delayed initial biofilm formation in the QQAnMBR. Furthermore, the microbial assemblies of the mature biofilm were changed in the QQAnMBR, probably attributable to the abiotic microbial floc attachment. © 2021 Elsevier Ltd.
AB - The first experimental study on the influence of acyl homoserine lactones (AHLs) degrading quorum quenching (QQ) consortium on the dynamics of biofilm bio-communities (i.e., from suspended biomass to initial biofilm and mature biofilm) in an anaerobic membrane bioreactor (AnMBR) at a microscopic scale (denoted as QQAnMBR) was reported. QQ did not change the overall bacterial community of the suspended biomass, inclusive of the key functional bacteria. Moreover, the retarded initial biofilm formation was attributed to not only the lower extracellular polymeric substance content of suspended biomass, but also the decelerated colonization of the AHL-regulated low-abundance in suspended biomass but pioneering keystone taxa Rhodocyclaceae;g- on membrane surface. However, pioneering fouling-related taxa such as Sulfurovum and Rhodocyclaceae;g- still played paramount roles in the delayed initial biofilm formation in the QQAnMBR. Furthermore, the microbial assemblies of the mature biofilm were changed in the QQAnMBR, probably attributable to the abiotic microbial floc attachment. © 2021 Elsevier Ltd.
KW - AHLs
KW - AnMBRs
KW - Initial fouling
KW - Microbial community dynamics
KW - Quorum quenching
UR - http://www.scopus.com/inward/record.url?scp=85119349129&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85119349129&origin=recordpage
U2 - 10.1016/j.biortech.2021.126183
DO - 10.1016/j.biortech.2021.126183
M3 - RGC 21 - Publication in refereed journal
C2 - 34710612
SN - 0960-8524
VL - 344
JO - Bioresource Technology
JF - Bioresource Technology
IS - Part B
M1 - 126183
ER -