We would like to inform you of the second announcement and invite all of you to attend the “11th International Conference on Toxic Cyanobacteria” (ICTC 11), which will be held in Kraków, Poland, from 5 to 10 May 2019. All those interested in ICTC 11 will find detailed information about the conference at http://www.ictc11.org.
The deadline for abstract submission is 15 January 2019.
Local Organizing Committee
The September-October 2018 issue of CYANOnews is out !
It features, among others, an overview of the CyanoTracker project, open special issues related to cyano-research, new papers acknowledging CYANOCOST, job offers and forthcoming events.
You can download it here:
The next issue will come out in the end of November. You are welcome to send us any posts and info to be included in CYANOnews and in our media (website, facebook, twitter).
Looking forward to ICHA2018 in Nantes,
The Department of Environmental Chemistry (Uchem) of Eawag is offering a position for a Postdoctoral Researcher in Environmental and Analytical Chemistry.
Topic: Natural Toxins
The position is part of our research on natural toxins. Ecosystems and drinking water resources are not only vulnerable towards anthropogenic pollutants but also natural toxins. Bioactive compounds produced by aquatic organisms, such as cyanobacteria, are of particular concern since these are waterborne toxins directly released into surface waters. Cyanobacteria produce a diverse mixture of bioactive compounds beyond the well-known microcystins, yet the potential risk of many cyanobacterial metabolites remains mostly unknown.
The project is led by Dr Elisabeth Janssen (Uchem) in collaboration with Dr Colette vom Berg (Utox). The period of appointment for the Postdoctoral Researcher is 24 months, earliest starting date is January 2019 or as soon as the position can be adequately filled.
Closing date for applications is 15 November 2018.
Details and application form can be found here.
The Special Issue of ICTC10 that was held in October 2016 in Wuhan, China is published in Journal of Oceanology and Limnology, Volume 36, Issue 4, July 2018.
From the Preface article by R. Li, L. Song and P. Orr:
“The 10th nternational Conference on toxic cyanobacteria (ICTC-10) was successfully held during 23–28 Oct. 2016. We were so glad to see much progress made on toxic cyanobacteria and cyanotoxins during past years, and the ICTC does provide a global forum for a wide-ranging communication and discussion of key issues related to cyanobacterial blooms and cyanotoxins. This special issue “Cyanobacteria and cyanotoxins: responses and detection” in Journal of Oceanology and Limnology includes a collection of twelve papers focus on different topics and approaches on diversity, detection and physiological responses of cyanobacterial blooms and cyanotoxins.”
ICTC11 will be held in Krakow, Poland, on 5-10 May 2019.
U.S. EPA Office of Ground Water and Drinking water recently released a video that provides an overview of available tools to support proactive planning for cyanotoxin management in drinking water; watch the video here.
Many thanks to Dr. Lesley D’Anglada, US EPA, Editor of the Freshwater HABs Newsletter for sharing this information.
A Workshop titled “CyanoVir2018” was held in the Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland on 3-6 July 2018. The Chairman of Scientific Committee was Dariusz Dziga andal Organizing Committee members were Anna Maksylewicz, Aleksandra Tlałka, Adam Antosiak.
The main topics of CyanoVir2018 were:
– The interaction between marine toxic cyanobacteria and cyanophages
– Adaptation of toxic cyanobacteria to the chill/light stress
– Extraction, isolation and characterization of bioactive metabolites from cyanobacteria
– The analysis and interpretation of MS spectra of cyanobacterial peptides
– The integration of best practices to block cyanobacterial overgrowth
– Terrestrial cyanobacteria and cyanobacterial secondary metabolites as biomarkers for paleoclimatic reconstruction
– Analysis of RNA-seq data and bacteriophage genome annotations
Invited speakers included J. Meriluoto, Z. Svircev, H. Mazur-Marzec, M. Antoniou, A. Toruńska, K. Kvederavičiūtė, E. Šimoliūnas, N. Tokodi, D. Drobac and Krzysztof Pyrć.
You can download the flyer of Cyanovir 2018 here.
On August 6 and 7, 2018, CyanoSED: A Workshop on Benthic Cyanobacteria and Cyanotoxins will take place at EPA-Cincinnati.
The workshop is organized by Dr. Kaytee Pokrzywinski (U.S. Army Corps of Engineers), Dr. Timothy Davis (Bowling Green State University), Dr. Susie Wood (The Cawthron Institute) and Dr. Jim Lazorchak (EPA, ORD, NERL).
The goals of the workshop are to identify knowledge gaps and prioritize research needs on issues surrounding benthic cyanobacteria and it will feature presentations from experts in the field and discussions on those presented topics.
- Understand current research in benthic/sediment-associated HABs related to benthic mat-forming (including attached, periphytic and filamentous) cyanobacteria and benthic-pelagic (planktonic) coupling of bloom events.
- Identify knowledge gaps and topic areas worth pursing in more detail.
- Facilitate engagement among federal, local and state government agencies; academic institutions; and industry partners to continue coordination and collaboration on sediment/benthic-associated HABs issues.
- Effectively disseminate workshop results by facilitating publication of research priorities and detailed key discussions developed through this workshop.
This information was shared by Dr. Jim Lazorchak (EPA, ORD, NERL).
Abstract of a paper from a collaboration within CYANCOST (Armenia, USA, Greece), that was authored by Minasyan et al. and published in Toxicon:
“This paper presents the first report of cyanobacteria and cyanotoxins from the South Caucasus region, in particular from Lake Yerevan (Armenia). Microcystis, Dolichospermum and Planktothrix were the key genera identified during the growing season. A trend of a remarkable increase in cyanobacterial densities was observed from 2012 to 2013 exhibiting bloom formation in June (by Nostoc linckia) with the highest values in June and August 2013, reaching up to 695.9*103 cells mL−1. Seasonal dependence of cyanobacterial density on temperature, and temperature as a driver for cyanobacterial cells growth and development were suggested. Biogenic nutrients were identified as co-drivers determining species richness and dominance, as well as the distribution of phytoplankton in different parts of the reservoir.
Cyanotoxin concentrations in the filtered biomass were reported during July 2012 for both stations of the reservoir (left and right bank). Microcystin-RR (MC-RR) was the most abundant and the most frequently observed cyanotoxin. Lower MC-LR concentrations were identified in all samples from both stations, with the highest values observed at the right bank in July 2012. [D-Asp3]MC-RR, MC-YR, MC-HtyR, [D-Asp3]MC-LR, MC-HilR, MC-WR, MC-LY and MC-LW were also identified in trace levels. Anatoxin-a (ANA) was reported in the samples from both stations during August 2012. Cylindrospermopsin (CYN) was present in trace concentrations in samples from both stations during July and in the sample from the left bank during September.”
This paper acknowledges CYANOCOST.
Arevik Minasyan, Christophoros Christophoridis, Alan E. Wilson, Sevasti-Kiriaki Zervou, Triantafyllos Kaloudis, Anastasia Hiskia (2018). Diversity of cyanobacteria and the presence of cyanotoxins in the epilimnion of Lake Yerevan (Armenia). Toxicon 150, 28-38.
A review on “Cyanobacterial Blooms” by top-experts in the field has recently been published in Nature Reviews Microbiology (June 2018). The review presents evidence indicating that cyanobacterial blooms are increasing in frequency, magnitude and duration globally. It discusses the traits involved in cyanobacteria dominance and bloom development, environmental drivers, production and modes of action of cyanotoxins and strategies for bloom prevention and control. There is also a special section about historical observations of algal blooms.
The review has references to 188 published articles, with annotations to key publications. This is a must-read for both beginners and experienced scientists in the field.
Jef Huisman, Geoffrey A. Codd, Hans W. Paerl, Bas W. Ibelings, Jolanda M.H. Verspagen and Petra Visser (2018). Cyanobacterial Blooms. Nature Reviews Microbiology. https://doi.org/10.1038/s41579-018-0040-1
Article by Evanthia Mantzouki and Bas Ibelings, Univ. of Geneva.
The first product of the European Multi Lake Survey (EMLS) is published in Toxins. This paper would not have been possible without the EMLS, the grassroots initiative that brought together around 200 scientists from 26 European countries to sample their lakes and answer questions of ecological importance. Understanding global scale phenomena, such as climate warming, requires information of high spatial resolution to investigate if lakes of similar characteristics (e.g. morphometry, trophic status) would respond in a consistent manner to similar environmental forcing. Cyanobacterial occurrence as a typical consequence of environmental perturbation in aquatic systems worldwide, was the centre of attention in the EMLS. Starting from a common goal to produce adequate evidence and eventually push for stricter regulation towards improved freshwater quality, the EMLS consortium (Figure 1) designed straightforward sampling protocols to accommodate the capacity in funding, time, personnel and equipment of all participants, without compromising quality. Cyanotoxins, phytoplankton pigments and environmental parameters were sampled and analysed in a fully standardised way to ensure scientific validity.
As a result of this effort, the first peer-reviewed EMLS article casts light on cyanotoxins and toxin quota distribution across the European continent. In an unexpected -but welcoming for our research purpose!- hot summer in 2015, temperature effects, both directly through boosting physiological processes of cyanobacterial growth and, indirectly through enhancing water stability that facilitate buoyant cyanobacterial cells, determined the spatial distribution of hepatotoxins (microcystins), neurotoxins (anatoxin-a) and cytotoxins cylindrospermopsin). The Northern European lakes were struck by a prolonged heat wave, more than the Mediterranean ones, during the sampling period that pinpointed the reality of climate warming. In such an event, toxin diversity increased along the latitudinal gradient, showing that cyanobacterial toxin production is enhanced not necessarily when it is hot (Mediterranean) but when it gets warmer than usual (heat event in North). Increases in toxin diversity (increase in toxin numbers but also representation of each toxin), entailed an increased presence of cylindrospermopsin, anatoxin and less studied microcystin variants, with a simultaneous decrease in the famous MC-LR. While global warming continues, the direct and indirect effects of increased lake temperatures will drive changes in the distribution of cyanobacterial toxins in Europe, potentially promoting selection of a few highly toxic species or strains.
Reference (Open access):
Mantzouki et al. (2018). Temperature Effects Explain Continental Scale Distribution of Cyanobacterial Toxins. Toxins 2018, 10(4), 156; https://doi.org/10.3390/toxins10040156
EMLS was supported by COST Actions NETLAKE and CYANOCOST.