Limits...
Bioprospecting for acidophilic lipid-rich green microalgae isolated from abandoned mine site water bodies.

Eibl JK, Corcoran JD, Senhorinho GN, Zhang K, Hosseini NS, Marsden J, Laamanen CA, Scott JA, Ross GM - AMB Express (2014)

Bottom Line: Unfortunately, these microalgae species are found to be sensitive to environmental stresses or competition by regional strains.Lig 290 is a Scenedesmus spp. isolated from a low pH waterbody (pH = 4.5) in proximity to an abandoned lignite mine in Northern Ontario, Canada.As a consequence, Lig 290 may have potential application as a robust microalgal species for use in biofuel production.

View Article: PubMed Central - HTML - PubMed

Affiliation: Northern Ontario School of Medicine, 935 Ramsey Lake Rd, Sudbury, ON P3E 2C6, Canada. gross@nosm.ca.

ABSTRACT
With fossil fuel sources in limited supply, microalgae show tremendous promise as a carbon neutral source of biofuel. Current microalgae biofuel strategies typically rely on growing high-lipid producing laboratory strains of microalgae in open raceways or closed system photobioreactors. Unfortunately, these microalgae species are found to be sensitive to environmental stresses or competition by regional strains. Contamination by invasive species can diminish productivity of commercial algal processes. A potential improvement to current strategies is to identify high-lipid producing microalgae, which thrive in selected culture conditions that reduce the risk of contamination, such as low pH. Here we report the identification of a novel high-lipid producing microalgae which can tolerate low pH growth conditions. Lig 290 is a Scenedesmus spp. isolated from a low pH waterbody (pH = 4.5) in proximity to an abandoned lignite mine in Northern Ontario, Canada. Compared to a laboratory strain of Scendesmus dimorphus, Lig 290 demonstrated robust growth rates, a strong growth profile, and high lipid production. As a consequence, Lig 290 may have potential application as a robust microalgal species for use in biofuel production.

No MeSH data available.


Related in: MedlinePlus

Identification of stressed environments from the Abandoned Mines Information System. a) The Abandoned Mines Information System is a dataset maintained by the Ontario Minister of Natural Resources. The dataset identifies 5200 abandoned mine sites across Ontario. The Onakawana site (highlighted by a blue box) was the only identified lignite mine in the province. Additionally, the mine site was abandoned without a closure plan. b) Twelve waterway samples (each identified by a hexagon) were collected in proximity to the Onakawana mine site (triangle).
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Figure 1: Identification of stressed environments from the Abandoned Mines Information System. a) The Abandoned Mines Information System is a dataset maintained by the Ontario Minister of Natural Resources. The dataset identifies 5200 abandoned mine sites across Ontario. The Onakawana site (highlighted by a blue box) was the only identified lignite mine in the province. Additionally, the mine site was abandoned without a closure plan. b) Twelve waterway samples (each identified by a hexagon) were collected in proximity to the Onakawana mine site (triangle).

Mentions: Ontario covers one million square kilometers of Canada, of which approximately 61% is composed of mineral rich pre-cambrian rock. Due to this abundant store of minerals, Ontario has been a mining hub for over a century. As a legacy of its mining history, Ontario has over 5000 abandoned mines according to the Abandoned Mines Information System (AMIS; Ontario Ministry of Northern Development and Mines), which are illustrated Figure 1a. Government regulations have been implemented to mitigate the environmental impact resulting from mining activities. However, strict environmental regulations have only become stringent in the last two decades and thus mines pre-1990 had few, if any, closure strategy requirements.


Bioprospecting for acidophilic lipid-rich green microalgae isolated from abandoned mine site water bodies.

Eibl JK, Corcoran JD, Senhorinho GN, Zhang K, Hosseini NS, Marsden J, Laamanen CA, Scott JA, Ross GM - AMB Express (2014)

Identification of stressed environments from the Abandoned Mines Information System. a) The Abandoned Mines Information System is a dataset maintained by the Ontario Minister of Natural Resources. The dataset identifies 5200 abandoned mine sites across Ontario. The Onakawana site (highlighted by a blue box) was the only identified lignite mine in the province. Additionally, the mine site was abandoned without a closure plan. b) Twelve waterway samples (each identified by a hexagon) were collected in proximity to the Onakawana mine site (triangle).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4230719&req=5

Figure 1: Identification of stressed environments from the Abandoned Mines Information System. a) The Abandoned Mines Information System is a dataset maintained by the Ontario Minister of Natural Resources. The dataset identifies 5200 abandoned mine sites across Ontario. The Onakawana site (highlighted by a blue box) was the only identified lignite mine in the province. Additionally, the mine site was abandoned without a closure plan. b) Twelve waterway samples (each identified by a hexagon) were collected in proximity to the Onakawana mine site (triangle).
Mentions: Ontario covers one million square kilometers of Canada, of which approximately 61% is composed of mineral rich pre-cambrian rock. Due to this abundant store of minerals, Ontario has been a mining hub for over a century. As a legacy of its mining history, Ontario has over 5000 abandoned mines according to the Abandoned Mines Information System (AMIS; Ontario Ministry of Northern Development and Mines), which are illustrated Figure 1a. Government regulations have been implemented to mitigate the environmental impact resulting from mining activities. However, strict environmental regulations have only become stringent in the last two decades and thus mines pre-1990 had few, if any, closure strategy requirements.

Bottom Line: Unfortunately, these microalgae species are found to be sensitive to environmental stresses or competition by regional strains.Lig 290 is a Scenedesmus spp. isolated from a low pH waterbody (pH = 4.5) in proximity to an abandoned lignite mine in Northern Ontario, Canada.As a consequence, Lig 290 may have potential application as a robust microalgal species for use in biofuel production.

View Article: PubMed Central - HTML - PubMed

Affiliation: Northern Ontario School of Medicine, 935 Ramsey Lake Rd, Sudbury, ON P3E 2C6, Canada. gross@nosm.ca.

ABSTRACT
With fossil fuel sources in limited supply, microalgae show tremendous promise as a carbon neutral source of biofuel. Current microalgae biofuel strategies typically rely on growing high-lipid producing laboratory strains of microalgae in open raceways or closed system photobioreactors. Unfortunately, these microalgae species are found to be sensitive to environmental stresses or competition by regional strains. Contamination by invasive species can diminish productivity of commercial algal processes. A potential improvement to current strategies is to identify high-lipid producing microalgae, which thrive in selected culture conditions that reduce the risk of contamination, such as low pH. Here we report the identification of a novel high-lipid producing microalgae which can tolerate low pH growth conditions. Lig 290 is a Scenedesmus spp. isolated from a low pH waterbody (pH = 4.5) in proximity to an abandoned lignite mine in Northern Ontario, Canada. Compared to a laboratory strain of Scendesmus dimorphus, Lig 290 demonstrated robust growth rates, a strong growth profile, and high lipid production. As a consequence, Lig 290 may have potential application as a robust microalgal species for use in biofuel production.

No MeSH data available.


Related in: MedlinePlus