Isolation and algicidal properties study of the strain G1 from reservoir sediments
Microcystis aeruginosa is a globally important cyanobacterial species that poses a threat to human health and development. The use of bacteria to control algal blooms has become an important research topic in recent years. In the present work, the algicidal strain G1 was isolated from sediments of a...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-03-01
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| Series: | Water Supply |
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| Online Access: | http://ws.iwaponline.com/content/22/3/3374 |
| _version_ | 1818015831358963712 |
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| author | Keting Yuan Qiong Wan Dajun Ren Beibei Chai Aiqing Kang Xiaohui Lei Bin Chen |
| author_facet | Keting Yuan Qiong Wan Dajun Ren Beibei Chai Aiqing Kang Xiaohui Lei Bin Chen |
| author_sort | Keting Yuan |
| collection | DOAJ |
| description | Microcystis aeruginosa is a globally important cyanobacterial species that poses a threat to human health and development. The use of bacteria to control algal blooms has become an important research topic in recent years. In the present work, the algicidal strain G1 was isolated from sediments of a reservoir in Xi'an, China, identified by 16S ribosomal DNA (rDNA), and its algicidal effects were investigated. The rDNA sequence of G1 (GenBank accession number MW205793) is 99.86% similar to that of Chitinimonas sp., and the strain indirectly solubilised algae. Algae removal by G1 was optimal during the decay phase (algae solubilisation rate = 65.85%). Temperature (5–120 °C) did not significantly affect algae removal, pH 5–9 was tolerated, and pH 7 achieved the highest algae lysis rate (63.56%). Ultrasonic treatment of G1 destroyed the algae-solubilising effect. An injection ratio of 15% achieved the highest algae lysis rate (67.64%) under 12 h:12 h light:dark conditions, and full darkness achieved the highest algae lysis rate (68.21%). Thus, G1 can effectively inhibit the reproduction of M. aeruginosa, making it a promising biological agent for controlling algal growth. HIGHLIGHTS
An algicidal bacterium strain G1 was isolated from source water reservoir sediment and identified as Chitinimonas.;
G1 acts against Microcystis aeruginosa through indirect attack.;
The active compound is heat stable.;
Darkness, decay phase, and a 15% dosing ratio are optimal for algae solubilisation.; |
| first_indexed | 2024-04-14T07:02:54Z |
| format | Article |
| id | doaj.art-d9ba20c3dc9743c8a5562cf5e9c9f43e |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-04-14T07:02:54Z |
| publishDate | 2022-03-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-d9ba20c3dc9743c8a5562cf5e9c9f43e2022-12-22T02:06:40ZengIWA PublishingWater Supply1606-97491607-07982022-03-012233374338610.2166/ws.2021.393393Isolation and algicidal properties study of the strain G1 from reservoir sedimentsKeting Yuan0Qiong Wan1Dajun Ren2Beibei Chai3Aiqing Kang4Xiaohui Lei5Bin Chen6 School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China Shaanxi Modern Architecture Design and Research Institute, Xi'an 710014, China Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China China Institute of Water Resources and Hydropower Research, Beijing 100038, China Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China Microcystis aeruginosa is a globally important cyanobacterial species that poses a threat to human health and development. The use of bacteria to control algal blooms has become an important research topic in recent years. In the present work, the algicidal strain G1 was isolated from sediments of a reservoir in Xi'an, China, identified by 16S ribosomal DNA (rDNA), and its algicidal effects were investigated. The rDNA sequence of G1 (GenBank accession number MW205793) is 99.86% similar to that of Chitinimonas sp., and the strain indirectly solubilised algae. Algae removal by G1 was optimal during the decay phase (algae solubilisation rate = 65.85%). Temperature (5–120 °C) did not significantly affect algae removal, pH 5–9 was tolerated, and pH 7 achieved the highest algae lysis rate (63.56%). Ultrasonic treatment of G1 destroyed the algae-solubilising effect. An injection ratio of 15% achieved the highest algae lysis rate (67.64%) under 12 h:12 h light:dark conditions, and full darkness achieved the highest algae lysis rate (68.21%). Thus, G1 can effectively inhibit the reproduction of M. aeruginosa, making it a promising biological agent for controlling algal growth. HIGHLIGHTS An algicidal bacterium strain G1 was isolated from source water reservoir sediment and identified as Chitinimonas.; G1 acts against Microcystis aeruginosa through indirect attack.; The active compound is heat stable.; Darkness, decay phase, and a 15% dosing ratio are optimal for algae solubilisation.;http://ws.iwaponline.com/content/22/3/337416s rdnaalgicidal bacteriaindirect algae lysismicrocystis aeruginosa |
| spellingShingle | Keting Yuan Qiong Wan Dajun Ren Beibei Chai Aiqing Kang Xiaohui Lei Bin Chen Isolation and algicidal properties study of the strain G1 from reservoir sediments Water Supply 16s rdna algicidal bacteria indirect algae lysis microcystis aeruginosa |
| title | Isolation and algicidal properties study of the strain G1 from reservoir sediments |
| title_full | Isolation and algicidal properties study of the strain G1 from reservoir sediments |
| title_fullStr | Isolation and algicidal properties study of the strain G1 from reservoir sediments |
| title_full_unstemmed | Isolation and algicidal properties study of the strain G1 from reservoir sediments |
| title_short | Isolation and algicidal properties study of the strain G1 from reservoir sediments |
| title_sort | isolation and algicidal properties study of the strain g1 from reservoir sediments |
| topic | 16s rdna algicidal bacteria indirect algae lysis microcystis aeruginosa |
| url | http://ws.iwaponline.com/content/22/3/3374 |
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