Toxic Picoplanktonic Cyanobacteria—Review

Jakubowska, Natalia; Szeląg-Wasielewska, Elżbieta

doi:10.3390/md13031497

Cited by 85 publications

(64 citation statements)

References 170 publications

(184 reference statements)

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“…showed strong seasonal relationships with temperature [28], and this genera provided important sources of organic carbon and nutrients for the summer food web [29]. This is a health concern in some cases, as Synechococcus blooms can produce harmful toxins [30][31][32]. Thus, we should strengthen the prevention and treatment of Cyanobacteria Synechococcus blooms in warmer seasons.…”

Section: Discussionmentioning

confidence: 99%

Dynamics of Bacterial Community Diversity and Structure in the Terminal Reservoir of the South-To-North Water Diversion Project in China

Jia

Liu

et al. 2018

Water

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Abstract:The South-to-North Water Diversion Project (SNWDP) is the largest water transfer project in the world, and its purpose is to relax water constraints in a region facing severe water scarcity. Bacterial communities from these reservoirs are important to human health, and analyzing their diversity and structure is crucial to water safety. Here, we investigated the dynamics of bacterial communities and their relationship with environmental parameters in the terminal reservoir (Miyun Reservoir) of the Middle Route of the SNWDP by high-throughput sequencing technology. Our results showed that Firmicutes, Proteobacteria, Cyanobacteria and Bacterioidetes were the most abundant phyla in the water column, and the community composition fluctuated seasonally. Moreover, the detected diversity of the bacterial community composition provided novel insights into the ongoing biogeochemical processes. The temperature was positively correlated with the dominant bacteria, with other factors, including the total dissolved solids, total phosphorus, dissolved oxygen and total nitrogen, shaping the structure and distribution of the microbial community. Furthermore, the metagenome showed broad phylogenetic diversity, indicating that organisms were involved in multiple essential environmental processes. This work is important for building a database to understand how microbial communities change after water transfers.

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Section: Discussionmentioning

confidence: 99%

Dynamics of Bacterial Community Diversity and Structure in the Terminal Reservoir of the South-To-North Water Diversion Project in China

Jia

Liu

et al. 2018

Water

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“…Many species of the genus Microcystis are known as microcystin producers (Carey et al, ; Harke et al, ). Meanwhile, species of Aphanocapsa spp., considered picoplanktonic cyanobacteria, have been identified as potentially microcystin producers (Domingos et al, ; Jakubowska & Szeląg‐Wasilewska, ).…”

Section: Discussionmentioning

confidence: 99%

Environmental factors driving the dominance of the harmful bloom‐forming cyanobacteria Microcystis and Aphanocapsa in a tropical water supply reservoir

Magalhães

Luz

Junior

2019

Water Environment Research

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Harmful cyanobacterial blooms in reservoirs have become a serious global issue for environmental health. However, dominance among different toxic cyanobacteria genera remains poorly understood, especially in tropical areas. We evaluated the influence of environmental factors, including total phosphorus, dissolved aluminum, water level, and precipitation on the change of the dominant genus from Microcystis to Aphanocapsa, in a hypereutrophic tropical reservoir, using 443 water samples over six years of field monitoring by applying generalized linear models (GLM). The results pointed out the prevalence of longer hydrologic retention time leading to enhanced water stability, and nutrients' accumulation into the hypolimnetic zones of the reservoir may have favored the ecophysiological advantages for the picocyanobacteria Aphanocapsa, which reached densities greater than 1 million/ml. In addition, this article also suggests that physical-chemical remediation methods applied for immobilizing phosphorus in the sediments of the reservoir may be low effective in limiting cyanobacterial growth. These findings are not only meaningful to the understanding of the dynamics of cyanobacterial genera but also to improve the management of eutrophic reservoirs in tropical regions. © 2019 Water Environment Federation • Practitioner points• We assessed cyanobacterial dominance changes based on 6-year field monitoring.• First article addressing the dominance of Aphanocapsa spp. in a tropical reservoir.• Species of Aphanocapsa responded better to hydrological changes in the reservoir.• The use of remediators was accompanied by an increase in cyanobacteria biomass.

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“…Hence, in order to be effective against their predators or prey, the compounds need to exhibit high potency. For this reason, marine natural products usually demonstrate extremely potent biological activities and continue to be a rich source of a vast array of such medicinally valuable compounds [7, 9-13]…”

Section: Introductionmentioning

confidence: 99%

Recent advances in isolation, synthesis, and evaluation of bioactivities of bispyrroloquinone alkaloids of marine origin

Nijampatnam

Dutta

Velu

2015

Chinese Journal of Natural Medicines

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The ocean continues to provide a plethora of unique scaffolds capable of remarkable biological applications. A large number of pyrroloiminoquinone alkaloids, including discorhabdins, epinardins, batzellines, makaluvamines, and veiutamine have already been isolated from marine organisms. A class of pyrroloiminoquinone-related alkaloids known as bispyrroloquinones is the focus of this review. This family of marine alkaloids, which contain an aryl substituted bispyrroloquinone ring system, includes three subclasses of alkaloids namely, wakayin, tsitsikammamines A-B and zyzzyanones A-D. Both wakayin and the tsitsikammamines contain a tetracyclic fused bispyrroloiminoquinone ring system, while zyzzyanones contain a fused tricyclic bispyrroloquinone ring system. The unique chemical structures of these marine natural products and their diverse biological properties, including antifungal and antimicrobial activity, as well as the potent, albeit generally nonspecific and universal cytotoxicities, have attracted great interest of synthetic chemists over the past three decades. Tsitsikammamines, wakayin, and several of their analogues show inhibition of topoisomerases. One additional possible mechanism of anticancer activity of tsitsikammamines analogues that was discovered recently is through the inhibition of indoleamine 2,3-dioxygenase, an enzyme involved in tumoral immune resistance. This review discusses the isolation, synthesis, and bioactivities of bispyrroloquinone alkaloids and their analogues.

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Toxic Picoplanktonic Cyanobacteria—Review

Cited by 85 publications

References 170 publications

Dynamics of Bacterial Community Diversity and Structure in the Terminal Reservoir of the South-To-North Water Diversion Project in China

Dynamics of Bacterial Community Diversity and Structure in the Terminal Reservoir of the South-To-North Water Diversion Project in China

Environmental factors driving the dominance of the harmful bloom‐forming cyanobacteria Microcystis and Aphanocapsa in a tropical water supply reservoir

Recent advances in isolation, synthesis, and evaluation of bioactivities of bispyrroloquinone alkaloids of marine origin

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