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Title: Elucidating the Unique Physiological Responses of Halotolerant Scenedesmus sp. Cultivated in Sea Water for Biofuel Production

Abstract

Utilization of saline or sea water for large-scale cultivation of microalgae can potentially provide a leap towards the reduction of both cost and sustainability challenges for biofuel production. The present investigation evaluated the temporal changes in carbohydrates and fatty acids of a halotolerant microalga Scenedesmus sp. IITRIND2 grown in natural seawater salinity to delineate the differential physiological response towards salt stress and subsequent potential for biofuel production. The microalga showed remarkable ability to tolerate different salinity environments under given temperature and light conditions. Such tolerance was attributed to the increase in neutral sugars, such as glucose, mannose, galactose, fucose and ribose, associated with both structural and storage (and potentially osmoprotectant) polymeric carbohydrates. The carbohydrate rearrangements may aid in the remodeling of cellular components to circumvent the detrimental effects of high salinity. The observed high carbohydrate and lipid accumulation in this microalga signifies its potential for integrated bioethanol and biodiesel production. This work provides a basic understanding towards high salinity adaption of Scenedesmus sp. IITRIND2, which could further be explored for identifying targets for halotolerance in other microalgal strains.

Authors:
 [1];  [2];  [2];  [1];  [1];  [2]
  1. Indian Inst. of Technology (IIT), Roorkee (India)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
OSTI Identifier:
1489183
Report Number(s):
NREL/JA-5100-73003
Journal ID: ISSN 2211-9264
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Algal Research
Additional Journal Information:
Journal Volume: 37; Journal Issue: C; Journal ID: ISSN 2211-9264
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; sea water; salinity; Scendesemus sp., Halotolerant; neutral sugar

Citation Formats

Arora, Neha, Laurens, Lieve M. L., Sweeney, Nicholas, Pruthi, Vikas, Poluri, Krishna Mohan, and Pienkos, Philip T. Elucidating the Unique Physiological Responses of Halotolerant Scenedesmus sp. Cultivated in Sea Water for Biofuel Production. United States: N. p., 2018. Web. doi:10.1016/j.algal.2018.12.003.
Arora, Neha, Laurens, Lieve M. L., Sweeney, Nicholas, Pruthi, Vikas, Poluri, Krishna Mohan, & Pienkos, Philip T. Elucidating the Unique Physiological Responses of Halotolerant Scenedesmus sp. Cultivated in Sea Water for Biofuel Production. United States. doi:10.1016/j.algal.2018.12.003.
Arora, Neha, Laurens, Lieve M. L., Sweeney, Nicholas, Pruthi, Vikas, Poluri, Krishna Mohan, and Pienkos, Philip T. Tue . "Elucidating the Unique Physiological Responses of Halotolerant Scenedesmus sp. Cultivated in Sea Water for Biofuel Production". United States. doi:10.1016/j.algal.2018.12.003. https://www.osti.gov/servlets/purl/1489183.
@article{osti_1489183,
title = {Elucidating the Unique Physiological Responses of Halotolerant Scenedesmus sp. Cultivated in Sea Water for Biofuel Production},
author = {Arora, Neha and Laurens, Lieve M. L. and Sweeney, Nicholas and Pruthi, Vikas and Poluri, Krishna Mohan and Pienkos, Philip T.},
abstractNote = {Utilization of saline or sea water for large-scale cultivation of microalgae can potentially provide a leap towards the reduction of both cost and sustainability challenges for biofuel production. The present investigation evaluated the temporal changes in carbohydrates and fatty acids of a halotolerant microalga Scenedesmus sp. IITRIND2 grown in natural seawater salinity to delineate the differential physiological response towards salt stress and subsequent potential for biofuel production. The microalga showed remarkable ability to tolerate different salinity environments under given temperature and light conditions. Such tolerance was attributed to the increase in neutral sugars, such as glucose, mannose, galactose, fucose and ribose, associated with both structural and storage (and potentially osmoprotectant) polymeric carbohydrates. The carbohydrate rearrangements may aid in the remodeling of cellular components to circumvent the detrimental effects of high salinity. The observed high carbohydrate and lipid accumulation in this microalga signifies its potential for integrated bioethanol and biodiesel production. This work provides a basic understanding towards high salinity adaption of Scenedesmus sp. IITRIND2, which could further be explored for identifying targets for halotolerance in other microalgal strains.},
doi = {10.1016/j.algal.2018.12.003},
journal = {Algal Research},
number = C,
volume = 37,
place = {United States},
year = {2018},
month = {12}
}

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