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Updated: Jun 4, 2025

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
Mechanism of molecular communication and bacterial community succession in microalgal bacterial biofilms under
Min Wang1, Hengyuan Chen1, Junfang Cheng1
1College of Environmental and Resource Science, College of Carbon Neutral, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.
Abstract:
Microalgal-bacterial biofilms are a competitive wastewater treatment technology. This study investigated the impact of photoperiod on the characteristics and performance of these biofilms in treating pig farm wastewater. Under continuous lighting (L-24h), we observed optimal NH4+-N removal efficiency, minimal chlorophyll levels, and peak concentrations of polysaccharides and c-di-GMP. The concentration of c-di-GMP, strongly correlated with the dominant genera Brevundimonas, Devosia, and Comamonas, modulated the maturation of microalgal-bacterial biofilms. The formation of these biofilms promoted NH4+-N removal. SEM imaging under L-24h conditions revealed microalgae and bacteria intimately bound by extracellular polymeric substances. Overall, this study unveiled the mechanisms of molecular communication and bacterial community succession within microalgal-bacterial biofilms under varying photoperiods.
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