Augmentation of arsenic enhances lipid yield and defense responses in alga Nannochloropsis sp.
The present study was conducted with microalga Nannochloropsis sp. to evaluate its tolerance responses and biofuel perspectives under different arsenic regime (0-1000μM As(III)). Results showed that optimal biomass (61.00±3.72mg/L/d) and lipid productivity (20.27mg/L/d) were obtained in culture treated with 100μM As(III) in comparison to other treatments. In addition, fatty acid profile of alga was in accordance with European biodiesel standards (EN 14214), which reflects good oxidative stability of oil. High antioxidants viz., ascorbic acid, GSH and cysteine tolerance responses as well as lipid yield at 100μM As(III), opens a new insight in the field of algal biology. Thus, microalgae Nannochloropsis sp. may be employ in remediation as well as biodiesel production.
Plant Ecology and Environmental Science Division, CSIR-National Botanical Research Institute, Lucknow 226 001, India.
A K
AK
Upadhyay
Algology Laboratory, CSIR-National Botanical Research Institute, Lucknow 226 001, India.
S K
SK
Mandotra
Plant Ecology and Environmental Science Division, CSIR-National Botanical Research Institute, Lucknow 226 001, India.
N
N
Kumar
Environmental Science Discipline, Department of Chemistry, Manipal University, Jaipur 303007, India.
N K
NK
Singh
Department of Botany, University of Lucknow, Lucknow 226007, India.
Lav
L
Singh
Plant Ecology and Environmental Science Division, CSIR-National Botanical Research Institute, Lucknow 226 001, India. Electronic address: unr_nbri@gmail.com.
U N
UN
Rai
D001151:Arsenic; D056804:Biofuels / Q000382:microbiology*; D018533:Biomass; D005227:Fatty Acids / Q000096:biosynthesis; D008055:Lipids / Q000096:biosynthesis; D058086:Microalgae
D056804:Biofuels; D005227:Fatty Acids; D008055:Lipids; D001151:Arsenic
Antioxidant; Arsenic; Biofuel; Nannochloropsis sp.; Phytoremediation