David Fewer

Bacteria can make extracellular polysaccharides that mediate heavy metal removal. This exopolysaccharide-producing cyanobacterium turned a 40-ml liquid culture into a gel. #UHCCCultureCollection

Oldest direct evidence for oxygenic photosynthesis in cyanobacteria fossils from around 1.75 billion years ago

Our paper describing the isolation of a toxic strain of cyanobacteria from a microbial mat in the Helsinki coast of the Baltic Sea sciencedirect.com/science/articl…

The cyanobacterium Aetokthonos hydrillicola really is nasty, as we show in the most recent @PNASNews cover story (pnas.org/doi/10.1073/pn…). A thread… 1/

Campaigners have held a wake on the shores of Lough Neagh to mourn what they say is the death of the largest freshwater lake in Ireland and the UK. The lough is heavily polluted with toxic blue-green algae | rte.ie/b/1405756

Sila's paper on an unusual branched biosynthetic pathway for the production of microbial sunscreens out now in ACS Chemical Biology pubs.acs.org/doi/10.1021/ac…

Our latest paper on the isolation of a toxin-producing cyanobacterium from an algal mat on the Helsinki coast of the Baltic Sea sciencedirect.com/science/articl…

Kuuman alkukesän seurauksena sinilevähavaintoja tehtiin runsaasti. Vaikka heinäkuu alkoikin viilenevän kesäsään merkeissä, runsaat sateet voivat lisätä vesistöihin valuvaa ravinnekuormaa ja siten edistää sinileväkukintojen runsastumista. wwf.fi/uutiset/2023/0…

Kaksi kuvaa #Itämeri'stä juuri nyt. Meri on kuuma, @dmidk'n mukaan n. 4 °C yli 1985-2003 keskiarvon. Oikealla @SYKE_EO:ssa tuotettu satelliittikuva eiliseltä, 28.6. #Suomenlahti muistuttaa jo kesää 2018. Heinäkuun sää ratkaisee miten #sinilevä'tilanne kehittyy. @SYKEinfo #ilmasto

Photo of a foliose tripartite lichen (Peltigera) that keeps cyanobacteria (Nostoc) as a nitrogen-fixing partner in black bodies called cephalodia. These cyanobacteria can produce toxins while in symbiosis or grown in pure culture. doi.org/10.1073/pnas.1…

Our alga of the week from the@CCACof is #CCAC 3369 B Spirulina sp. Class: #Cyanophyceae Order: Spirulinales Family: Spirulinaceae #Algensammlung #algae #microalgae #ude #Cyanobakterien #Blaualgen #cyanobacteria #algaoftheweek

Domoic acid event along the coast is having a significant effect on the health of marine mammals 💔 via @NYTimes nytimes.com/2023/06/21/us/…

@MaraSimonazzi Congratulations Mara!

Yesterday I had the defence of my #PhD on toxic #cyanobacteria in drinking waters. It' been a crazy and fulfilling three years, I'll them cherish forever. Thanks to all who were there for me in this huge day

Xiaodan Ouyang (@XiaodanOuyang) presenting her paper on the direct pathway cloning and expression of radiosumin biosynthetic pathway at the Nordic Natural Products conference today. Well done Xiaodan! doi.org/10.5281/zenodo… #ChinaScholarshipCouncil

Spirulina grows on rocks and boulders in the #BalticSea. These cyanobacteria can adapt their light harvesting apparatus to dim light using different pigments. Photos by Annica Långnabba (Metsähallitus) and @inkeri_vuori #MicroscopyMonday @VELMUohjelma @NesslingSaatio

Congratulations to @XiaodanOuyang on her article in Organic and Biomolecular Chemistry! A big thanks to all co-authors. We report the radiosumin biosynthetic pathway and show that this small molecule is a human trypsin inhibitor. doi.org/10.1039/D3OB00… #Nordaqua #mmtdk

@janthealgaeman @inkeri_vuori We did check by mass spectrometry but did not detect cyanotoxins form this sample.

@FewerLab @inkeri_vuori Toxic?

A thick mat of Oscillatoria covering rocks from Laajalahti bay on the Helsinki coast. Photosynthetic cyanobacteria can provide a substrate for a rich community of heterotrophic bacteria. Photos by @inkeri_vuori #BalticSea #MicroscopyMonday

Trichodesmium forms blooms in tropical and subtropical oceans where they are important source of new nitrogen. Sailors have referred to the blooms as sea sawdust since the 1700s. This study in Science resolves how motile filaments form colonies under stress conditions.