Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/164155
Title: Promotion effect of bacteria in phycosphere on flocculation activity of Aspergillus niger on Synechocystis biomass
Authors: Li, Yi
Nie, He
Zhang, Huike
Niu, Wenfang
Li, Shanshan
Wang, Hailei
Keywords: Science::Biological sciences
Issue Date: 2022
Source: Li, Y., Nie, H., Zhang, H., Niu, W., Li, S. & Wang, H. (2022). Promotion effect of bacteria in phycosphere on flocculation activity of Aspergillus niger on Synechocystis biomass. Aquaculture, 550, 737833-. https://dx.doi.org/10.1016/j.aquaculture.2021.737833
Journal: Aquaculture
Abstract: The cyanobacterium Synechocystis with high scientific research value and application potential to aquaculture is hard to harvest its biomass. Bioflocculation is an economical and efficient method for harvesting microalgal biomass. In this study, Aspergillus niger 7806F3, a fungus that showed high flocculation activity on Synechocystis cells, was selected to assess its potential for the harvest of microalgal biomass. The analyses of flocculation activity and flocculation mechanism indicated that mycelial pellets of Aspergillus niger 7806F3 exhibited high flocculation activity on Synechocystis biomass through charge neutralization mechanism, and proteins of mycelial pellets participated in the flocculation activity. The flocculation activity of strain 7806F3 on aseptic algal culture indicated that bacteria in the phycosphere can promote the flocculation effect of strain 7806F3 on algal cells. Bacterial community analysis indicated that the addition of mycelial pellets changed the bacterial community diversity in the Synechocystis phycosphere, increasing the abundance of genus Pseudomonas in the phycosphere. Finally, Pseudomonas sp. Algal4 was isolated from the Synechocystis phycosphere and confirmed with the ability to promote the flocculation activity of strain 7806F3 on Synechocystis cells. This study not only provides a method to harvest Synechocystis biomass, but also confirms the promotion effect of bacteria in phycosphere on flocculation activity, which provided a new understanding for the interaction between the algae and bacteria in the phycosphere.
URI: https://hdl.handle.net/10356/164155
ISSN: 0044-8486
DOI: 10.1016/j.aquaculture.2021.737833
Research Centres: Nanyang Environment and Water Research Institute 
Advanced Environmental Biotechnology Centre (AEBC) 
Rights: © 2021 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:NEWRI Journal Articles

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