David Fewer

News from our lab. We study toxic cyanobacteria, water quality, secondary metabolism and microbial bioinformatics. Posts by lab members. Led by @david_fewer

[David Fewer @FewerLab]

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

[David Fewer @FewerLab]

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

[Catherine Demoulin @Roumpouloum]

I'm happy and so proud to share our new paper published in Nature, today! #Fossil #FossilThylakoids #Photosynthesis #Cyanobacteria https://t.co/i6X23hlwin

[David Fewer @FewerLab]

Our paper describing the isolation of a toxic strain of cyanobacteria from a microbial mat in the Helsinki coast of the Baltic Sea https://t.co/uLRapvdP5K

[Timo Niedermeyer @Niedermeyer_Lab]

The cyanobacterium Aetokthonos hydrillicola really is nasty, as we show in the most recent @PNASNews cover story (https://t.co/J8wyvW96r5). A thread… 1/

[RTÉ News @rtenews]

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 | https://t.co/fFnUoDFBRw

[David Fewer @FewerLab]

Sila's paper on an unusual branched biosynthetic pathway for the production of microbial sunscreens out now in ACS Chemical Biology https://t.co/iAdKvwolSR

[David Fewer @FewerLab]

Our latest paper on the isolation of a toxin-producing cyanobacterium from an algal mat on the Helsinki coast of the Baltic Sea

https://t.co/uLRapvdhgc

[WWF Suomi @WWFSuomi]

Kuuman alkukesän seurauksena sinilevähavaintoja tehtiin runsaasti. Vaikka heinäkuu alkoikin viilenevän kesäsään merkeissä, runsaat sateet voivat lisätä vesistöihin valuvaa ravinnekuormaa ja siten edistää sinileväkukintojen runsastumista.
https://t.co/Q5yHPak7VT

[Seppo Knuuttila @KnuuttilaS]

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

[David Fewer @FewerLab]

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.

https://t.co/5M5rEj9QMY

[Central Collection of Algal Cultures CCAC @CCACof]

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

[Steffaney Wood-Rocca @steffwould]

Domoic acid event along the coast is having a significant effect on the health of marine mammals 💔 via @NYTimes https://t.co/GSRBFq18ra

[David Fewer @FewerLab]

@MaraSimonazzi Congratulations Mara!

[David Fewer @FewerLab]

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!

https://t.co/Q3uMFVLDTV

#ChinaScholarshipCouncil

[David Fewer @FewerLab]

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

[David Fewer @FewerLab]

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

[David Fewer @FewerLab]

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.

https://t.co/PRROy2YWXO

#Nordaqua #mmtdk

[David Fewer @FewerLab]

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

[David Fewer @FewerLab]

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

[David Fewer @FewerLab]

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.

[Science Magazine @ScienceMagazine]

The movement of individual gliding filaments of nitrogen-fixing cyanobacteria Trichodesmium and their interactions with other filaments help these nitrogen-fixing cyanobacterium form aggregates in response to stress, a new Science study finds. https://t.co/g96w3hbQOh