Mediterranean alien harmful algal blooms: origins and impacts

Marampouti, Christina; Buma, Anita G. J.; Boer, M. Karin de

doi:10.1007/s11356-020-10383-1

Cited by 32 publications

(11 citation statements)

References 59 publications

(114 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As many freshwater cyanobacteria produce a variety of toxins affecting both animal and human health in eutrophic environments, many researchers have focused on the mechanism of cyanobacterial blooms and the physiological changes in cyanobacteria in freshwater (Marampouti et al 2020). The abiotic factors influencing cyanobacterial blooms have been well studied in freshwater ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Physiological and metabolic responses of Microcystis aeruginosa to a salinity gradient

Wang

Sheng

Jiang

2021

Environ Sci Pollut Res

View full text Add to dashboard Cite

Microcystis is a well-known toxic cyanobacterium in eutrophic environments, and an increasing number of Microcystis blooms have emerged in salty reservoirs and coastal rivers. This study observed that many Microcystis were identified in a coastal river in June 2020. The relative abundance of Microcystis decreased from 81.2 to 10.2% in the sampling sites from a salinity of 0 (Sal. 0) to a salinity of 12 (Sal. 12). Hepatotoxic microcystins (MCs) were identified in the coastal river and its estuary. Of the samples, those with a salinity of 5 (Sal. 5) had the highest concentration of MCs at 7.81 ± 0.67 μg L −1 . In a saline water simulation experiment, the results showed that salt inhibited Microcystis (M.) aeruginosa growth, enhanced the activity levels of superoxide dismutase (SOD) and catalase (CAT) and stimulated microcystin production. Transcription analysis showed that the expression levels of the psaB and rbcL genes controlling photosymbiotic processes were downregulated, and capD and csaBgene-related polysaccharide productions were upregulated by salt incubation. Notably, metabolism analysis showed that the total polysaccharides, proteins and small molecular matter, such as sucrose, methionine and N-acetyl-D-glucosamine, in the Microcystis cells increased substantially to resist the extracellular hyperosmotic pressure caused by the high salinity levels in culture. These findings indicate that increased salt in a natural aquatic body shifts the phytoplankton community by influencing the physiological metabolism of cyanobacteria and poses a high risk of microcystin exposure during cyanobacterial blooms in coastal rivers.

show abstract

Section: Introductionmentioning

confidence: 99%

Physiological and metabolic responses of Microcystis aeruginosa to a salinity gradient

Wang

Sheng

Jiang

2021

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…Eutrophication of coastal areas mainly appears in enclosed bays, e.g., the northern Adriatic Sea, the Gulf of Lion, and the northern Aegean, and results in the appearance of HABs [30]. Moreover, climate change has a great effect on coastal areas as it alters some hydrological features of these areas, which further facilitates the occurrence of HABs [46]. HABs in coastal areas of the MS are various, extremely localized, and either appear seasonally every year or occur in an apparently stochastic manner.…”

Section: Habs In the Mediterranean Sea (Ms) Coastal Areasmentioning

confidence: 99%

Review of Harmful Algal Blooms in the Coastal Mediterranean Sea, with a Focus on Greek Waters

Tsikoti

Genitsaris

2021

Diversity

View full text Add to dashboard Cite

Anthropogenic marine eutrophication has been recognized as one of the major threats to aquatic ecosystem health. In recent years, eutrophication phenomena, prompted by global warming and population increase, have stimulated the proliferation of potentially harmful algal taxa resulting in the prevalence of frequent and intense harmful algal blooms (HABs) in coastal areas. Numerous coastal areas of the Mediterranean Sea (MS) are under environmental pressures arising from human activities that are driving ecosystem degradation and resulting in the increase of the supply of nutrient inputs. In this review, we aim to present the recent situation regarding the appearance of HABs in Mediterranean coastal areas linked to anthropogenic eutrophication, to highlight the features and particularities of the MS, and to summarize the harmful phytoplankton outbreaks along the length of coastal areas of many localities. Furthermore, we focus on HABs documented in Greek coastal areas according to the causative algal species, the period of occurrence, and the induced damage in human and ecosystem health. The occurrence of eutrophication-induced HAB incidents during the past two decades is emphasized.

show abstract

“…Under the influence of factors such as climate change, some algae have the ability to produce toxic compounds, and some of them can simultaneously produce multiple algal toxins (Caron et al, 2010;Griffith and Gobler, 2020;Onofrio et al, 2020;Marampouti et al, 2021). This adversely affects the ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Sensitive time-resolved fluoroimmunoassay for the quantitative detection of okadaic acid

Qin

Kuang

et al. 2022

Front. Mar. Sci.

View full text Add to dashboard Cite

Okadaic acid (OA) is a biotoxin from marine microalgae and widely present in shellfish, which severely affects the seafood safety. Therefore, it is essential to establish a highly sensitive OA analysis and detection method. In this study, a new type of immunoassay technology was established on the basis of the competition method using time-resolved fluoroimmunoassay (TRFIA). OA-bovine serum albumin (OA-BSA) coated on a 96-well plate competes with OA standard or samples to bind OA antibodies. A rare-earth ion-labeled secondary antibody, which fluoresces strongly under the effect of the enhancement solution, was then added as a tracer for detection. The established linear range of OA detected by TRFIA was 2.49 × 10-3 – 50 ng/ml, and the limit of detection was 2.49 × 10-3 ng/ml. The average coefficients of variation from intra-assay and inter-assay batches were 3.34% and 5.87%, respectively, and the recovery rate was 93.04%–111.66%. The OA in shellfish samples was determined by TRFIA and high-performance liquid chromatography (HPLC), and the results showed a good correlation. This study established a TRFIA to detect OA, which has the characteristics of simplicity, sensitivity, precision, and high accuracy, far exceeding the EU or the US standards for the detection of shellfish toxins. It is expected to make proper contribution in marine biotoxin detection.

show abstract

Mediterranean alien harmful algal blooms: origins and impacts

Cited by 32 publications

References 59 publications

Physiological and metabolic responses of Microcystis aeruginosa to a salinity gradient

Physiological and metabolic responses of Microcystis aeruginosa to a salinity gradient

Review of Harmful Algal Blooms in the Coastal Mediterranean Sea, with a Focus on Greek Waters

Sensitive time-resolved fluoroimmunoassay for the quantitative detection of okadaic acid

Contact Info

Product

Resources

About