Metals and Metalloids in the Water–Bloom-Forming Cyanobacteria and Ambient Water from Nanquan Coast of Taihu Lake, China

Su, Yanping; Liu, Hongbo; Yang, Jian

doi:10.1007/s00128-012-0666-z

Cited by 18 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3D ). A previous studies conducted in the same sampling lake zone as our present study found that the concentrations of soluble metals in summer were much higher than in spring, such as iron increased from 24 ug/l in March to 86 ug/l in July (Su et al 2012 ), and soluble Cr increased from 40.90 to 114.70 ug/l (Fan et al 2019 ). There are likely two reasons for high concentrations of soluble heavy metals in summer in this lake area: one is that the DOC derived from Microcystis blooming can form complexes with metal ions; the higher concentration of Microcystis -blooming-derived DOC in summer thus leads to higher concentrations of soluble heavy metals (Fan et al 2019 ).…”

Section: Discussionsupporting

confidence: 65%

Microcystis blooms caused the decreasing richness of and interactions between free-living microbial functional genes in Lake Taihu, China

Wu,

Yu,

Liu

et al. 2023

FEMS Microbiology Ecology

View full text Add to dashboard Cite

Microcystis blooms have a marked effect on microbial taxonomical diversity in eutrophic lakes, but their influence on the composition of microbial functional genes is still unclear. In this study, the free-living microbial functional genes (FMFG) composition was investigated in the period before Microcystis blooms (March) and during Microcystis blooms (July) using a comprehensive functional gene array (GeoChip 5.0). The composition and richness of FMFG in the water column was significantly different between these two periods. The FMFG in March was enriched in the functional categories of nitrogen, sulfur, and phosphorus cycling, whereas the FMFG in July was enriched in carbon cycling, organic remediation, and metal homeostasis. Molecular ecological network analysis further demonstrated fewer functional gene interactions and reduced complexity in July than in March. Module hubs of the March network were mediated by functional genes associated with carbon, nitrogen, sulfur, and phosphorus, whereas those in July by a metal homeostasis functional gene. We also observed stronger deterministic processes in the FMFG assembly in July than in March. Collectively, this study demonstrated that Microcystis blooms induced significant changes in FMFG composition and metabolic potential, and abundance—information which can support the understanding and management of biogeochemical cycling in eutrophic lake ecosystems.

show abstract

Section: Discussionsupporting

confidence: 65%

Microcystis blooms caused the decreasing richness of and interactions between free-living microbial functional genes in Lake Taihu, China

Wu,

Yu,

Liu

et al. 2023

FEMS Microbiology Ecology

View full text Add to dashboard Cite

show abstract

“…The possibility of using microorganisms in clean technologies for environmental decontamination has spurred the search for resistant organisms that are capable of biotransforming toxic elements such as As. Cyanobacteria are of interest because of their dominant position in aquatic environments impacted by different types of pollutants (Su et al 2012;Garcia-Meza et al 2005). Moreover, several studies have reported their ability to biotransform oxyanions of As into organic forms (e.g., Guo et al 2011;Yin et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Arsenic biotransformation by cyanobacteria from mining areas: evidences from culture experiments

Franco

Ferreira

Vasconcelos

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

Elucidating the role of cyanobacteria in the biotransformation of arsenic (As) oxyanions is crucial to understand the biogeochemical cycle of this element and indicate species with potential for its bioremediation. In this study, we determined the EC50 for As(III) and As(V) and evaluated the biotransformation of As by Synechococcus sp. through high-performance liquid chromatography hyphenated to inductively coupled plasma mass spectrometry (HPLC-ICP-MS) and X-ray absorption fine structure spectroscopy (XAFS). Synechococcus sp. exhibited higher sensitivity to As(III) with an EC(50, 96 h) of 6.64 mg L(-1) that was approximately 400-fold lower than that for As(V). Even though the cells were exposed to concentrations of As(III) (6 mg L(-1)) approximately 67-fold lower than those of As(V) (400 mg L(-1)), similar intracellular concentrations of As (60.0 μg g(-1)) were observed after 30 days. As(V) was the predominant intracellular As species followed by As(III). Furthermore, organic As species such as monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA) were observed in higher proportions after exposure to As(III). The differential toxicity among As oxyanions indicates that determining the redox state of As in the environment is fundamental to estimate toxicity risks to aquatic organisms. Synechococcus sp. demonstrated potential for its application in bioremediation due to the high accumulation of As and production of As organic compounds notably after exposure to As(III).

show abstract

“…In this study elements were selected according to Irving and Williams (1953) series stating that reactivity increases with atomic number being Cu the most reactive and Mn the less in the first transition series. Zinc shows a lower reactivity than Cu but higher than Mn (Su et al 2012). In addition, the studied elements may proceed from various anthropogenic and natural sources.…”

mentioning

confidence: 97%

Aquatic Humic Substances: Relationship Between Origin and Complexing Capacity

González-Guadarrama

Armienta

Rosa

2018

Bull Environ Contam Toxicol

View full text Add to dashboard Cite

Aiming to determine the relationship between source and complexing capacity, humic substances obtained from three sites (Sorocaba and Itapanhau Brasilian rivers, and Xochimilco Lake in Mexico) were studied. Copper, manganese, zinc and arsenic complexing capacity were determined for the three substances under various pH conditions. Results showed similar complexing capacity for the three elements depending on the chemistry of each one and on the physico-chemical conditions. Speciation diagrams showed that these conditions affect both, the humic substances, and the transition metals and arsenic.

show abstract

Metals and Metalloids in the Water–Bloom-Forming Cyanobacteria and Ambient Water from Nanquan Coast of Taihu Lake, China

Cited by 18 publications

References 12 publications

Microcystis blooms caused the decreasing richness of and interactions between free-living microbial functional genes in Lake Taihu, China

Microcystis blooms caused the decreasing richness of and interactions between free-living microbial functional genes in Lake Taihu, China

Arsenic biotransformation by cyanobacteria from mining areas: evidences from culture experiments

Aquatic Humic Substances: Relationship Between Origin and Complexing Capacity

Contact Info

Product

Resources

About