Ấn phẩm:
Cyanobacterium Raphidiopsis raciborskii and its toxin in Buon Phong reservoir, Dak Lak province, Vietnam
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This study investigated the variation of the cyanobacterium Raphidiopsis raciborskii population under the influence of physicochemical parameters from May 2019 to April 2020 in the Buơn Phong reservoir. The correlations between these parameters were explored by using Principal Component Analysis (PCA) and Pearson correlation. analysis. The cylindrospermopsin (CYN) toxin in isolated strains from the reservoir was confirmed by using High-performance liquid chromatography (HPLC) analyses. R. raciborskii presented throughout the year in the reservoir with a biovolume from 0.12 to 9.14 mm L. Four R. raciborskii strains (CBP2, CBP3, CBP4, and CBPS) were successfully isolated and confirmed to produce CYN by the HPLC results. The highest concentration in isolated strains was 0.345 µg g¹ DW in the CBP4 strain. The PCR results of genes responsible for CYN biosynthesis showed that the PCR amplicons of cyrß and CyrC were amplified in two toxic strains (CBP2 and CBP3), while the amplicons of both cyrß and cyr were not observed in two remaining toxic strains. In addition, such abiotic factors as temperature and nutrients played major roles in the abundance of R. raciborskii. Moreover, the biovolume of R. raciborskii positively correlated with the CYN concentrations in the Buon Phong reservoir.
Mô tả
Vietnam Journal of Earth Sciences, Vol. 44, No. 2
Tác giả
Ngo, Thi Diem My
Duong, Thi Thuy
Le, Thi Phuong Quynh
Nguyen, Thi Thu Lien
Ton, That Phap
Người hướng dẫn
Nơi xuất bản
Nhà xuất bản
Viện Địa lý, Viện Hàn lâm Khoa học và Công nghệ Việt Nam
Năm xuất bản
2022-06
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Từ khóa chủ đề
Toxic cyanobacteria , Cylindrospermopsin , Buon Phong reservoir , Dak Lak province