[1] Zhou Yuanlong, Yang Fei, Liang Geyu, Yin Lihong, et al. Biodegradation of microcystin-RR and -LR by an indigenousbacterial strain MC-LTH11 isolated from Lake Taihu [J]. Journal of Southeast University (English Edition), 2014, 30 (1): 68-71. [doi:10.3969/j.issn.1003-7985.2014.01.013]
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Biodegradation of microcystin-RR and -LR by an indigenousbacterial strain MC-LTH11 isolated from Lake Taihu(
)
太湖土著菌MC-LTH11的筛选及其对藻毒素-RR和-LR的生物降解
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 30
- Issue:
- 2014 1
- Page:
- 68-71
- Research Field:
- Environmental Science and Engineering
- Publishing date:
- 2014-03-31
Info
- Title:
- Biodegradation of microcystin-RR and -LR by an indigenousbacterial strain MC-LTH11 isolated from Lake Taihu
- 太湖土著菌MC-LTH11的筛选及其对藻毒素-RR和-LR的生物降解
- Author(s):
- Zhou Yuanlong; Yang Fei; Liang Geyu; Yin Lihong; Pu Yuepu
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, Southeast University, Nanjing 210009, China
- Keywords:
- water treatment; biodegradation; microbiology; microcystins; high performance liquid chromatography(HPLC)
- PACS:
- X506
- DOI:
- 10.3969/j.issn.1003-7985.2014.01.013
- Abstract:
- The indigenous bacterial strain MC-LTH11 with the capability of degrading microcystin-RR(MC-RR)and microcystin-LR(MC-LR)was successfully isolated from Lake Taihu. The bacterium was identified as Stenotrophomonas sp., which possessed a mlrA gene. The MC-LTH11 thoroughly degraded MC-RR and MC-LR with the initial concentration of 37.13 mg/L and 18.49 mg/L, respectively, in the medium containing crude microcystins extract within 6 d. The degradation rates were affected by temperature, pH, initial MCs concentration and the kinds of media. Additionally, the bacterial strain MC-LTH11 also degraded thoroughly microcystins in the water body of Lake Taihu within 1 d. These results suggest that the Stenotrophomonas sp. MC-LTH11 has the capacity to bioremediate water bodies contaminated by microcystins, and may contribute to the degradation of microcystins after the outbreak of harmful cyanobacterial blooms in Lake Taihu.
- 从太湖中成功筛选出一株能够同时降解微囊藻毒素-RR(MC-RR)和微囊藻毒素-LR(MC-LR)的土著细菌MC-LTH11.经鉴定, 该菌属寡养单胞菌属, 并含有mlrA基因.在含有藻毒素粗提物的培养基中, MC-LTH11能够在6d内将初浓度分别为37.13 mg/L的MC-RR和 18.49 mg/L的MC-LR完全降解, 并且降解速度受到pH值、温度、初始微囊藻毒素浓度和培养基种类的影响.此外, MC-LTH11能够在1d内完全降解太湖水样中的微囊藻毒素.研究结果表明, 寡养单胞菌MC-LTH11具备对微囊藻毒素污染水体的修复能力, 并可能是太湖水华爆发后微囊藻毒素降解的重要因素.
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Memo
- Memo:
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Biographies: Zhou Yuanlong(1988—), male, graduate; Pu Yuepu(corresponding author), male, doctor, professor, yppu@ seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.30972440), the National Science and Technology Major Project(No.2012ZX07101-005).
Citation: Zhou Yuanlong, Yang Fei, Liang Geyu, et, al.Biodegradation of microcystin-RR and -LR by an indigenous bacterial strain MC-LTH11 isolated from Lake Taihu[J].Journal of Southeast University(English Edition), 2014, 30(1):68-71.[doi:10.3969/j.issn.1003-7985.2014.01.013]