Stress induced modifications in photosystem II electron transport, oxidative status, and expression pattern of acc D and rbc L genes in an oleaginous microalga Desmodesmus sp.

Sijil, P. V. and Vinaya, R. Adki and Sarada, R. and Chauhan, V. S. (2020) Stress induced modifications in photosystem II electron transport, oxidative status, and expression pattern of acc D and rbc L genes in an oleaginous microalga Desmodesmus sp. Bioresource Technology, 318. p. 124039. ISSN 0960-8524

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Abstract

The study aimed at understanding the biochemical and molecular level modifications in Desmodesmus sp. under lipid inducing stress conditions. The low-temperature (5 °C) incubation and nitrogen starvation reduced the PS II electron transport in microalga with a maximum reduction of 50–57% in ET0/ABS values. The PS II electron transport recovered in UV treated cultures after an initial reduction of 87–93% in ET0/ABS values. A 2.7–4.4 fold increase in ROS and MDA levels was observed under low-temperature incubation, and nitrogen starvation. The UV treatment caused 1.3–2.4 fold higher ROS and MDA levels than control. The low-temperature incubated, nitrogen starved, and UV treated cultures showed 2.4–4 fold higher acc D gene expression. A higher rbc L gene expression was observed under low-temperature stress. The study showed modifications in PS II electron transport, oxidative status, and expression of acc D and rbc L genes under stress conditions.

Item Type:	Article
Uncontrolled Keywords:	Desmodesmus sp. Stress conditions Photosystem II electron transport Oxidative stress Gene expression
Subjects:	500 Natural Sciences and Mathematics > 07 Life Sciences > 03 Biochemistry & Molecular Biology 500 Natural Sciences and Mathematics > 07 Life Sciences > 04 Microbiology > 01 Algae
Divisions:	Plant Cell Biotechnology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	27 Nov 2020 06:42
Last Modified:	27 Nov 2020 06:42
URI:	http://ir.cftri.res.in/id/eprint/14654

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