Results 31 to 40 of about 4,015 (236)

Novel virulent and temperate cyanophages predicted to infect Microcoleus associated with anatoxin‐producing benthic mats

open access: yesEnvironmental Microbiology, Volume 25, Issue 12, Page 3319-3332, December 2023., 2023
We explore the previously undescribed diversity of phages associated with anatoxin‐producing benthic mats from rivers, including a novel virulent cyanophage with a ‘jumbo’ genome. This virulent cyanophage is predicted to infect anatoxin‐producing Microcoleus and its appearance is concomitant with the host decline, supporting the kill‐the‐winner ...
Cecilio Valadez‐Cano   +2 more
wiley   +1 more source

Cell Death Inducing Microbial Protein Phosphatase Inhibitors—Mechanisms of Action

open access: yesMarine Drugs, 2015
Okadaic acid (OA) and microcystin (MC) as well as several other microbial toxins like nodularin and calyculinA are known as tumor promoters as well as inducers of apoptotic cell death.
Rune Kleppe   +2 more
doaj   +1 more source

Towards a mechanistic understanding of the impacts of nitrogen deposition on producer–consumer interactions

open access: yesBiological Reviews, Volume 98, Issue 5, Page 1712-1731, October 2023., 2023
ABSTRACT Nitrogen (N) deposition has increased substantially since the second half of the 20th century due to human activities. This increase of reactive N into the biosphere has major implications for ecosystem functioning, including primary production, soil and water chemistry and producer community structure and diversity.
Joost J. Vogels   +8 more
wiley   +1 more source

Specific Chemical and Genetic Markers Revealed a Thousands-Year Presence of Toxic Nodularia spumigena in the Baltic Sea

open access: yesMarine Drugs, 2018
In the Baltic Sea, diazotrophic cyanobacteria have been present for thousands of years, over the whole brackish water phase of the ecosystem. However, our knowledge about the species composition of the cyanobacterial community is limited to the last ...
Marta Cegłowska   +3 more
doaj   +1 more source

Cyanotoxins: methods and approaches for their analysis and detection [PDF]

open access: yes, 2017
Cyanotoxins are secondary metabolites produced by cyanobacteria, a group of photosynthetic prokaryota especially found in freshwater. In favourable conditions (i.e. high nutrient levels, light intensity, water temperature), cyanobacteria can form blooms,
CONDUTO ANTÓNIO DIANA SOFIA   +3 more
core   +1 more source

Investigation of the Occurrence of Cyanotoxins in Lake Karaoun (Lebanon) by Mass Spectrometry, Bioassays and Molecular Methods

open access: yesToxins, 2021
Lake Karaoun is the largest artificial lake in Lebanon and serves multiple purposes. Recently, intensive cyanobacterial blooms have been reported in the lake, raising safety and aesthetic concerns related to the presence of cyanotoxins and cyanobacterial
Noura Alice Hammoud   +10 more
doaj   +1 more source

Toxicity at the Edge of Life: A Review on Cyanobacterial Toxins from Extreme Environments

open access: yesMarine Drugs, 2017
Cyanotoxins are secondary metabolites produced by cyanobacteria, of varied chemical nature and toxic effects. Although cyanobacteria thrive in all kinds of ecosystems on Earth even under very harsh conditions, current knowledge on cyanotoxin distribution
Samuel Cirés   +2 more
doaj   +1 more source

Effects of Salinity and Temperature on the Growth, Toxin Production, and Akinete Germination of the Cyanobacterium Nodularia spumigena

open access: yesFrontiers in Marine Science, 2019
Harmful blooms of the cyanobacterium Nodularia spumigena occur in several parts of the world, and this species is notorious for its ability to produce cyanotoxins, such as nodularin.
Savênia B. Silveira, Clarisse Odebrecht
doaj   +1 more source

Evidence of trophic transfer of microcystins from the gastropod Lymnaea stagnalis to the fish Gasterosteus aculeatus. [PDF]

open access: yes, 2014
International audienceAccording to our previous results the gastropod Lymnaea stagnalis exposed to MC-producing cyanobacteria accumulates microcystins (MCs) both as free and covalently bound forms in its tissues, therefore representing a potential risk ...
Bormans, Myriam   +5 more
core   +3 more sources

Nodularia spumigena Peptides—Accumulation and Effect on Aquatic Invertebrates

open access: yesToxins, 2015
Thus far, the negative effects of Nodularia spumigena blooms on aquatic organisms have been mainly attributed to the production of the hepatotoxic nodularin (NOD). In the current work, the accumulation of other N.
Hanna Mazur-Marzec   +5 more
doaj   +1 more source

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