| RRC ID |
60825
|
| 著者 |
Pham, T.-L., Tran, T. H. Y., Hoang, N. S., Ngo, X. Q., Tran, T. T.h
|
| タイトル |
Co-occurrence of microcystin- and geosmin- producing cyanobacteria in the Tri An Reservoir, a drinking-water supply in Vietnam
|
| ジャーナル |
Fundamental and Applied Limnology
|
| Abstract |
The present study aimed to investigate the occurrence and distribution of microcystin-(MC) and geosmin-producing cyanobacteria in the Tri An Reservoir, a drinking-water supply in Southern Vietnam. The MC concentration was measured using high-performance liquid chromatography (HPLC). Geosmin production was screened using headspace solid-phase microextraction (HPME) and gas chromatography/mass spectrometry (GC/ MS). The ability of cyanobacteria to produce MC and geosmin was determined by the presence of two molecular markers: mcyA and geoA, respectively. A maximum MC concentration of 207.6 ± 14.2 μg g –1 dry weight (DW) was detected from an isolated Microcystis aeruginosa (Kützing) (strains TAMA1), and the maximum geosmin concentration of 114.2 ± 6.1 ng g –1 wet weight (WW) was detected from an isolated Dolichospermum circinale (Rabenhorst) (strains TADC4); MC and geosmin were also observed in water-bloom samples, with the highest concentrations being 463.6 ± 34.7 μg g –1 DW and 148.5 ± 9.8 ng g –1 WW, respectively. These results represent the first molecular evidence of the co-occurrence of MC- and geosmin-producing cyanobacteria in a drinking-water-supply reservoir in Vietnam. Given the success of the molecular techniques and chemical analysis used, we propose that multiplex polymerase chain reaction assays, HPLC, and HPME GC/MS can be reliable tools for investigating MC and geosmin in water-bloom and cyanobacterial samples. Further, we propose that they can be used to create early-warning systems for harmful secondary metabolites produced by cyanobacteria in drinking-water supplies.
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| 公開日 |
2020-6-1
|
| DOI |
10.1127/fal/2020/1296
|
| IF |
0.876
|
| 引用数 |
0
|
| リソース情報 |
| 藻類 |
NIES-102 |
