Analysis and Control of Microbial Systems

Analysis and Control of Microbial Systems

Master student loading an agarose gel in the lab. Photo
Master student Martha Drågen loading an agarose gel. Photo: Alex Fiedler.

Research activity

News and Notices

News and Notices

On 5 February, Synnøve Lofthus gave her PhD trial lecture entitled "Bacterial metabolic plasticity in environmental biology", before successfully defending in public her PhD thesis: "The effects of temperature and ice on biodegradation of crude oil". Congratulations! 

New paper: Blanca M. Gonzalez‑Silva, Kjell Rune Jonassen, Ingrid Bakke, Kjetill Østgaard & Olav Vadstein (2021): Understanding structure/function relationships in nitrifying microbial communities after cross‑transfer between freshwater and seawater. Nature Scientific Reports | (2021) 11:2979 | This is the 7th most cited journal in the world, with a 5-year impact factor of 4.576. So; not bad, really.

On 1 September, Leila Jafari got her Master thesis approved, entitled: “The effects of protein skimmer, hydrogen peroxide and salinity on water quality in RAS”.

Honouring the Microbes: 

Honouring the Microbes: Olav Vadstein envailing a new monument at NTNU to remind us all of the importance of the microbes for us and our planet (photo Per Henning NTNU). 

On August 20, professor Olav Vadstein presented a new statue honouring the microbes at NTNU. Together with professor Jochen Scmid, he has campained for this project for a year. The inspiration came from Japan, where several universities have done the same to create a ceremonial center expressing respect of microbial life. As far as we know, this is the first in Europe. There is a general lack of insight in microbial life and their essential ecological roles among the public as well as in academia. Since some of them may be pathogenic, they are also easily demonized. NTNU as a university has a duty to improve insight and respect for their importance for our planet and us. 

To find the best text for the monument, a competition was held and won by PhD candidate Lisa Titze:

Ode to microbes
You can be found everywhere on the globe,
yet you are but a tiny cell, a microbe.
Your contribution to our lives is vast.
Without you we could not live, could not last.
To study you is our quest,
to understand all the things you do best.
You help us so, if only you knew,
microbes, we stand in awe of you.

On August 19, Daniel Wæge got his Master thesis approved, entitled: “Initial bacterial colonization of yolk-sack fry in Atlantic Salmon (Salmo Salar) using a gnotobiotic system».

On July xx, Eirik Degré Lorentsen got his Master thesis approved, entitled “Characterization of two Janthinobacterium isolates originating from salmon fry: violacein operon sequences and growth conditions for violacein production”.

On June 25, Sunniva Ingebrigtsen Gaarden got her Master thesis approved, entitled: "Characterizing temporal dynamics in microbial communities under commercial production of salmon smolts in a recirculating aquaculture system (RAS)".

On June 17, Thomais Tsoulia got her Master thesis approved, entitled: "Investigating the effect of bioluminescence on Vibrio harveyi's travel time through the food chain: uptake in lumpfish via Artemia franciscana".

On June15, Kathrine Obrestad got her Master thesis approved, entitled: "The effects of gut microbiota on fitness in Daphnia magna".

On June 2, the ACMS group met for our annual summer lunch, succesful as always. This time wirh the proper corona virus distances as illustrated below:

The Group meeting at June 2, see Group Members in menu for details. Photo Jane Doe.



Papers published spring 2020:

Le D, Nguyen P, Nguyen D, Dierckens K, Boon N, Lacoere T, Kerckhof F-M, De Vrieze J, Vadstein O, Bossier P. 2020. Gut microbiota of migrating wild rabbit fish (Siganus guttatus) larvae have low spatial and temporal variability. Microb Ecol 79: 539–551. DOI: 10.1007/s00248-019-01436-1

Navada S, Vadstein O, Gaumet F, Tveten A-K, Spanu C, Mikkelsen Ø, Kolarevic J (2020) Biofilms remember: Osmotic stress priming as a microbial management strategy for improving salinity acclimation in nitrifying biofilms. Water Research 176: 115732. DOI: 10.1016/j.watres.2020.115732

Fossmark RO, Vadstein O, Rostend TW, Bakke I, Košeto D, Bugten AV, Helberg GA, Nesje J, Jørgensen NOG, Raspati G, Azrague K, Østerhus SW, Attramadal KJK  (2020) Effects of reduced organic matter loading through membrane filtration on the microbial community dynamics in recirculating aquaculture systems (RAS) with Atlantic salmon parr (Salmo salar). Aquaculture 524: 735268. DOI: 10.1016/j.aquaculture.2020.735268

Jin Y, Olsen RE, Harvey T, Østensen M-A, Li K, Santi N, Vadstein O, Bones A, Vik JO, Sandve S, Olsen Y (2020) Comparative transcriptomics reveals domestication-associated features of Atlantic salmon lipid metabolism. Molecular Ecology 29: 1860-1872. DOI: 10.1111/mec.15446

Navada S, Knutsen M, Bakke I, Vadstein O (2020) Nitrifying biofilms operated without external organic carbon show greater functional resilience to inter-guild competition caused by increases in carbon supply. Scientific Reports 10:7121. DOI: 10.1038/s41598-020-64027-y

Navadaa S, Sebastianpillai M, Kolarevic J, Fossmark RO, Tveten A-K, Gaumet F, Mikkelsen Ø, Vadstein O. (2020) A salty start: Brackish water start-up as a microbial management strategy for nitrifying bioreactors with variable salinity. Sci Total Environment 739: 139934. DOI: 10.1016/j.scitotenv.2020.139934

Dahle, Stine Veronica Wiborg; Bakke, Ingrid; Birkeland, Mari; Nordøy, Kristian; Dalum, Alf Seljenes; Attramadal, Kari. (2020) Production of lumpfish in RAS with distinct water treatments: Effects on fish survival, growth, gill health and microbial communities in rearing water and biofilm. Aquaculture. DOI: 10.1016/j.aquaculture.2020.735097 

Lofthus, Synnøve; Bakke, Ingrid; Tremblay, Julien; Greer, Charles; Brakstad, Odd Gunnar. (2020) Biodegradation of weathered crude oil in seawater with frazil ice. Marine Pollution Bulletin. vol. 154. DOI: 10.1016/j.marpolbul.2020.111090