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Insecticides induced biochemical changes in freshwater microalga Chlamydomonas mexicana

Title
Insecticides induced biochemical changes in freshwater microalga Chlamydomonas mexicana
Author
전병훈
Keywords
Acephate; Chlamydomonas mexicana; Imidacloprid; Proline; Stress enzymes; Superoxide dismutase
Issue Date
2016-01
Publisher
SPRINGER HEIDELBERG
Citation
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, v. 23, NO 2, Page. 1091-1099
Abstract
The effect of insecticides (acephate and imidacloprid) on a freshwater microalga Chlamydomonas mexicana was investigated with respect to photosynthetic pigments, carbohydrate and protein contents, fatty acids composition and induction of stress indicators including proline, superoxide dismutase (SOD) and catalase (CAT). C. mexicana was cultivated with 1, 5, 10, 15, 20 and 25 mg L-1 of acephate and imidacloprid. The microalga growth increased with increasing concentrations of both insecticides up to 15 mg L-1, beyond which the growth declined compared to control condition (without insecticides). C. mexicana cultivated with 15 mg L-1 of both insecticides for 12 days was used for further analysis. The accumulation of photosynthetic pigments (chlorophyll and carotenoids), carbohydrates and protein was decreased in the presence of both insecticides. Acephate and imidacloprid induced the activities of superoxide dismutase (SOD) and catalase (CAT) and increased the concentration of proline in the microalga, which play a defensive role against various environmental stresses. Fatty acid analysis revealed that the fraction of polyunsaturated fatty acids decreased on exposure to both insecticides. C. mexicana also promoted 25 and 21 % removal of acephate and imidacloprid, respectively. The biochemical changes in C. mexicana on exposure to acephate and imidacloprid indicate that the microalga undergoes an adaptive change in response to the insecticide-induced oxidative stress.
URI
https://link.springer.com/article/10.1007%2Fs11356-015-4681-6http://hdl.handle.net/20.500.11754/30487
ISSN
0944-1344; 1614-7499
DOI
10.1007/s11356-015-4681-6
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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