Cited by 102Algal biology and biofuel productionMicrobial Community Ecology and PhysiologyAquatic Ecosystems and Phytoplankton Dynamics

Novel bacterial isolate from Permian groundwater, capable of aggregating potential biofuel-producing microalga Nannochloropsis oceanica IMET1

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Wang, Hui, Laughinghouse, Haywood D., Anderson, Matthew A., Chen, Feng, Willliams, Ernest, Place, Allen R., Zmora, Odi, Zohar, Yonathan +2 more·2012·Applied and Environmental Microbiology

Abstract

Increasing petroleum costs and climate change have resulted in microalgae receiving attention as potential biofuel producers. Little information is available on the diversity and functions of bacterial communities associated with biofuel-producing algae. A potential biofuel-producing microalgal strain, Nannochloropsis oceanica IMET1, was grown in Permian groundwater. Changes in the bacterial community structure at three temperatures were monitored by two culture-independent methods, and culturable bacteria were characterized. After 9 days of incubation, N. oceanica IMET1 began to aggregate and precipitate in cultures grown at 30°C, whereas cells remained uniformly distributed at 15°C and 25°C. The bacterial communities in cultures at 30°C changed markedly. Some bacteria isolated only at 30°C were tested for their potential for aggregating microalgae. A novel bacterium designated HW001 showed a remarkable ability to aggregate N. oceanica IMET1, causing microalgal cells to aggregate after 3 days of incubation, while the total lipid content of the microalgal cells was not affected. Direct interaction of HW001 and N. oceanica is necessary for aggregation. HW001 can also aggregate the microalgae N. oceanica CT-1, Tetraselmis suecica, and T. chuii as well as the cyanobacterium Synechococcus WH8007. 16S rRNA gene sequence comparisons indicated the great novelty of this strain, which exhibited only 89% sequence similarity with any previously cultured bacteria. Specific primers targeted to HW001 revealed that the strain originated from the Permian groundwater. This study of the bacterial communities associated with potential biofuel-producing microalgae addresses a little-investigated area of microalgal biofuel research and provides a novel approach to harvest biofuel-producing microalgae by using the novel bacterium strain HW001.

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Crossref · 10.1128/aem.06474-11

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  • Another bacterium, designated as strain HW001, was capable of aggregating several microalgae and cyanobacteria species, including potential biofuel-producing microalgae, such as N. oceanica, without affecting the lipid content.

    “Another bacterium, designated as strain HW001, was capable of aggregating several microalgae and cyanobacteria species, including potential biofuel-producing microalgae, such as N. oceanica, without affecting the lipid content [14,125].”

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Authors
Wang, H., Laughinghouse, H. D., Anderson, M. A., Chen, F., Willliams, E., Place, A. R., Zmora, O., Zohar, Y., Zheng, T., & Hill, R. T.
Affiliations
  • University of Maryland Center for Environmental Science (US)
  • Smithsonian Institution (US)
  • University of Maryland, Baltimore County (US)
  • Xiamen University (CN)
Venue
Applied and Environmental Microbiology
Published
2012-03
Volume
78
Issue
5
Pages
1445-1453
ISSN
  • 0099-2240 (ISSN-L)
  • 1098-5336
OpenAlex
W1977225064
Cited by
102
References
44
Citations by year
2026: 1 · 2025: 7 · 2024: 6 · 2023: 6 · 2022: 7 · 2021: 11 · 2020: 15 · 2019: 8 · 2018: 11 · 2017: 6 · 2016: 4 · 2015: 2 · 2014: 9 · 2013: 6 · 2012: 3
FWCI
2.39
Type
journal article
Language
en
Open access
Locations
  • Applied and Environmental Microbiology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Open Repository and Bibliography (University of Liège) (submittedVersion)
Funders
  • National Natural Science Foundation of China
  • China Scholarship Council
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
Keywords
Nannochloropsis oceanica, novel bacterial isolates, microalgae-bacteria interactions, bacterial community structure, Tetraselmis, microalgae harvesting
MeSH terms
Chlorophyta, Bacteria, Cell Adhesion, DNA, Bacterial, DNA, Ribosomal, Molecular Sequence Data, Phylogeny, RNA, Ribosomal, 16S, Temperature, Cluster Analysis, Sequence Analysis, DNA, Microbial Interactions, Biofuels, Stramenopiles, Groundwater

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