NDLI: Cellular and Transcriptional Responses in Microcystis aeruginosa Exposed to Two Antibiotic Contaminants

Content Provider	Springer Nature Link
Author	Liu, Ying Zhang, Jian Gao, Baoyu
Copyright Year	2014
Abstract	The responses of Microcystis aeruginosa under exposure to spiramycin and amoxicillin were investigated on both cellular and genetic levels through a 7-day exposure test. Algal growth was inhibited by spiramycin while promoted by amoxicillin at test concentrations of 0.6–1.8 μg L−1, indicating a higher toxicity of spiramycin than amoxicillin. During the whole exposure period, the chlorophyll a content and expression levels of psbA, psaB, and rbcL were significantly inhibited by spiramycin at test concentrations of 1.2 and 1.8 μg L−1 (p < 0.05) and stimulated by 0.6–1.8 μg L−1 of amoxicillin (p < 0.05), with respective decreases of up to 26, 75, 72, and 82 % compared to the control and respective increases of 20, 70, 135, and 55 %. During the 4 to 7 days of exposure, the microcystin-LR content and expression levels of mcyB and grpE were reduced by up to 66, 47, and 72 % in spiramycin-treated algal cells, respectively, and stimulated by up to 1.3-, 1.4-, and 1.5-folds in amoxicillin-treated algal cells, respectively. Elevated recA expression was only observed in 1.2 and 1.8 μg L−1 of spiramycin-treated algal cells, indicating severe DNA damage due to the high toxicity. Target antibiotics were suspected to regulate the growth and microcystin-production in M. aeruginosa via the photosynthesis system.
Starting Page	535
Ending Page	543
Page Count	9
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	69
Issue Number	3
e-ISSN	1432184X
Language	English
Publisher	Springer US
Publisher Date	2014-10-24
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Spiramycin Amoxicillin Microcystin-LR Photosystem Gene transcription Microbiology Ecology Microbial Ecology Geoecology/Natural Processes Nature Conservation Water Quality/Water Pollution
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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