Katherine Helliwell
@kehelliwell.bsky.social
Algae enthusiast, Associate Professor @UniofExeter, joint appointment @thembauk
Algal ecophysiology | signalling | microbiome | molecular microbiology | diatoms!
Algal ecophysiology | signalling | microbiome | molecular microbiology | diatoms!
Pinned
Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms
Diatoms exert reciprocal, fine-scale control of P acquisition by N availability, depending on the immediate needs of the cell.
doi.org
How do diatoms cope with nitrogen and phosphorus colimitation? — Happy to share our new paper:
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
Reposted by Katherine Helliwell
How do diatoms cope with nitrogen and phosphorus colimitation? — Happy to share our new paper:
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms
Diatoms exert reciprocal, fine-scale control of P acquisition by N availability, depending on the immediate needs of the cell.
doi.org
September 2, 2025 at 8:58 AM
How do diatoms cope with nitrogen and phosphorus colimitation? — Happy to share our new paper:
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
Reposted by Katherine Helliwell
🧪How do marine phytoplankton cope with shortage of two vital nutrients? New research @thembauk.bsky.social @exetermarine.bsky.social reveals a hierarchy in nutrient stress responses to nitrogen and phosphorus co-limitation of marine diatoms🧬 Read the paper: www.science.org/doi/10.1126/...
#diatoms
#diatoms
August 29, 2025 at 6:02 PM
🧪How do marine phytoplankton cope with shortage of two vital nutrients? New research @thembauk.bsky.social @exetermarine.bsky.social reveals a hierarchy in nutrient stress responses to nitrogen and phosphorus co-limitation of marine diatoms🧬 Read the paper: www.science.org/doi/10.1126/...
#diatoms
#diatoms
How do diatoms cope with nitrogen and phosphorus colimitation? — Happy to share our new paper:
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms
Diatoms exert reciprocal, fine-scale control of P acquisition by N availability, depending on the immediate needs of the cell.
doi.org
September 2, 2025 at 8:58 AM
How do diatoms cope with nitrogen and phosphorus colimitation? — Happy to share our new paper:
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
"Nitrogen status exerts dynamic control over phosphorus sensing and acquisition via PSR1 in colimited marine diatoms"
🔗 doi.org/10.1126/scia...
@exetermarine.bsky.social @thembauk.bsky.social
Reposted by Katherine Helliwell
#OTD in 1876 Marie Victoire Lebour was born. Marie Lebour was based @thembauk.bsky.social for much of her caeer, which primarily focused on planktonic larvae and other microplantkon. We are privileged to have her personal library and research material in the library and archive.
📷UM158
📷UM158
August 20, 2025 at 2:53 PM
#OTD in 1876 Marie Victoire Lebour was born. Marie Lebour was based @thembauk.bsky.social for much of her caeer, which primarily focused on planktonic larvae and other microplantkon. We are privileged to have her personal library and research material in the library and archive.
📷UM158
📷UM158
Reposted by Katherine Helliwell
🚀 Exciting opportunity to launch your independent research career! @thembauk.bsky.social Reach out if you'd like to hear more. @mldiatoms.bsky.social #protistsonsky #ECR #AcademicJobs #Protistology #marinemicrobes
🔬 We're Hiring: Become the next MBA Anne Warner Research Fellow
You’ll be at the forefront of groundbreaking research, leading a team of scientists to unlock new insights in the realms of cell and molecular biology.
Apply by 17th September 2025
mymba.mba.ac.uk/job/mba-anne...
You’ll be at the forefront of groundbreaking research, leading a team of scientists to unlock new insights in the realms of cell and molecular biology.
Apply by 17th September 2025
mymba.mba.ac.uk/job/mba-anne...
August 12, 2025 at 9:07 AM
🚀 Exciting opportunity to launch your independent research career! @thembauk.bsky.social Reach out if you'd like to hear more. @mldiatoms.bsky.social #protistsonsky #ECR #AcademicJobs #Protistology #marinemicrobes
🚀 Exciting opportunity to launch your independent research career! @thembauk.bsky.social Reach out if you'd like to hear more. @mldiatoms.bsky.social #protistsonsky #ECR #AcademicJobs #Protistology #marinemicrobes
🔬 We're Hiring: Become the next MBA Anne Warner Research Fellow
You’ll be at the forefront of groundbreaking research, leading a team of scientists to unlock new insights in the realms of cell and molecular biology.
Apply by 17th September 2025
mymba.mba.ac.uk/job/mba-anne...
You’ll be at the forefront of groundbreaking research, leading a team of scientists to unlock new insights in the realms of cell and molecular biology.
Apply by 17th September 2025
mymba.mba.ac.uk/job/mba-anne...
August 12, 2025 at 9:07 AM
🚀 Exciting opportunity to launch your independent research career! @thembauk.bsky.social Reach out if you'd like to hear more. @mldiatoms.bsky.social #protistsonsky #ECR #AcademicJobs #Protistology #marinemicrobes
Reposted by Katherine Helliwell
🌊Curious how multi-nutrient scarcity impacts marine microbes🦠? Excited to announce our #OSM26 session, Glasgow Feb 22-27! Join us in bridging cell biology, modelling & oceanography! tinyurl.com/zzt5s9su @exetermarine.bsky.social @thembauk.bsky.social @proteocean.bsky.social @cmarkmoore.bsky.social
Nutrient Co-limitation of Marine Microbes: Exploring Cellular to Ecosystem-Level Effects
Nutrient availability limits microbial growth in marine ecosystems globally. Accumulating evidence has highlighted the prevalence of nutrient co-limitation, whereby two or more nutrients restrict mari...
tinyurl.com
July 31, 2025 at 8:34 AM
🌊Curious how multi-nutrient scarcity impacts marine microbes🦠? Excited to announce our #OSM26 session, Glasgow Feb 22-27! Join us in bridging cell biology, modelling & oceanography! tinyurl.com/zzt5s9su @exetermarine.bsky.social @thembauk.bsky.social @proteocean.bsky.social @cmarkmoore.bsky.social
🌊Curious how multi-nutrient scarcity impacts marine microbes🦠? Excited to announce our #OSM26 session, Glasgow Feb 22-27! Join us in bridging cell biology, modelling & oceanography! tinyurl.com/zzt5s9su @exetermarine.bsky.social @thembauk.bsky.social @proteocean.bsky.social @cmarkmoore.bsky.social
Nutrient Co-limitation of Marine Microbes: Exploring Cellular to Ecosystem-Level Effects
Nutrient availability limits microbial growth in marine ecosystems globally. Accumulating evidence has highlighted the prevalence of nutrient co-limitation, whereby two or more nutrients restrict mari...
tinyurl.com
July 31, 2025 at 8:34 AM
🌊Curious how multi-nutrient scarcity impacts marine microbes🦠? Excited to announce our #OSM26 session, Glasgow Feb 22-27! Join us in bridging cell biology, modelling & oceanography! tinyurl.com/zzt5s9su @exetermarine.bsky.social @thembauk.bsky.social @proteocean.bsky.social @cmarkmoore.bsky.social
Reposted by Katherine Helliwell
We are hiring! If you have experience in plant genomics + AI, or promoter engineering + synthetic biology, check out our two open postdoc positions (computational + wetlab): www.vandepoelelab.be/Jobs please re-share RT #ERC
Jobs | Vandepoele Lab
www.vandepoelelab.be
July 16, 2025 at 8:45 PM
We are hiring! If you have experience in plant genomics + AI, or promoter engineering + synthetic biology, check out our two open postdoc positions (computational + wetlab): www.vandepoelelab.be/Jobs please re-share RT #ERC
We had a wonderful time at the Molecular Life of Diatoms meeting in Ghent last week!! Many stimulating conversations and fantastic talks. Huge thanks to the organizers for this splendid event #mld8 #protistsOnSky 🤎💛💚🌊
Looking back on last week's Molecular Life of Diatoms conference 🌊. Honored to be hosting this tight-knit, creative and collaborative community in Ghent! Topics ranged from single-cell approaches, imaging breakthroughs, new insights into photosynthesis and symbioses etc. #protistsOnSky #MLD8
July 4, 2025 at 2:23 PM
We had a wonderful time at the Molecular Life of Diatoms meeting in Ghent last week!! Many stimulating conversations and fantastic talks. Huge thanks to the organizers for this splendid event #mld8 #protistsOnSky 🤎💛💚🌊
Exciting postdoc opportunity here👇📢📢 investigating diatom sensing @mldiatoms.bsky.social @thembauk.bsky.social @exetermarine.bsky.social come join us! #protistsOnSky #diatoms #signalling
Are you interested in how diatoms communicate with each other? Exciting post-doc position available in my lab to study the signalling mechanisms of cell-cell communication in diatoms. Deadline 14th July. @kehelliwell.bsky.social @thembauk.bsky.social www.jobs.ac.uk/job/DNO210/p...
July 4, 2025 at 11:21 AM
Exciting postdoc opportunity here👇📢📢 investigating diatom sensing @mldiatoms.bsky.social @thembauk.bsky.social @exetermarine.bsky.social come join us! #protistsOnSky #diatoms #signalling
Reposted by Katherine Helliwell
NEW in @science.org Global tracking #MarineMegafauna shows <8% of areas used overlap w/ existing MPAs, while >75% of important areas overlapped by threats like #fishing #shipping & ocean warming - 30x30 goal will be insufficient for their conservation www.megamove.org @thembauk.bsky.social
Global tracking of marine megafauna space use reveals how to achieve conservation targets
The recent Kunming-Montreal Global Biodiversity Framework (GBF) sets ambitious goals but no clear pathway for how zero loss of important biodiversity areas and halting human-induced extinction of thre...
science.org
June 5, 2025 at 6:41 PM
NEW in @science.org Global tracking #MarineMegafauna shows <8% of areas used overlap w/ existing MPAs, while >75% of important areas overlapped by threats like #fishing #shipping & ocean warming - 30x30 goal will be insufficient for their conservation www.megamove.org @thembauk.bsky.social
Reposted by Katherine Helliwell
We’re hiring! 🌊💼 Join our Operations team at our waterfront location in #Plymouth, where you'll be central to supporting us as a destination for #MarineBiology research & discovery.
🐟 Aquarium & Research Facilities Technician
🌊 Site Services Coordinator
More info: mymba.mba.ac.uk/job-listing....
🐟 Aquarium & Research Facilities Technician
🌊 Site Services Coordinator
More info: mymba.mba.ac.uk/job-listing....
June 18, 2025 at 8:51 AM
We’re hiring! 🌊💼 Join our Operations team at our waterfront location in #Plymouth, where you'll be central to supporting us as a destination for #MarineBiology research & discovery.
🐟 Aquarium & Research Facilities Technician
🌊 Site Services Coordinator
More info: mymba.mba.ac.uk/job-listing....
🐟 Aquarium & Research Facilities Technician
🌊 Site Services Coordinator
More info: mymba.mba.ac.uk/job-listing....
Reposted by Katherine Helliwell
Excited to share the lab's 1rst preprint! Rapid high-res immunofluorescence is now possible in cultured & environmental diatoms thanks to 4-fold expansion microscopy. A step-change for comparative cell biology in one of the most important phytoplankton groups on the planet 🥳
tinyurl.com/m9s5su7s 1/2
tinyurl.com/m9s5su7s 1/2
June 17, 2025 at 7:33 AM
Excited to share the lab's 1rst preprint! Rapid high-res immunofluorescence is now possible in cultured & environmental diatoms thanks to 4-fold expansion microscopy. A step-change for comparative cell biology in one of the most important phytoplankton groups on the planet 🥳
tinyurl.com/m9s5su7s 1/2
tinyurl.com/m9s5su7s 1/2
Reposted by Katherine Helliwell
🎉 Now out “Phylogenomic analyses indicate the archaeal superphylum DPANN originated from free‑living euryarchaeal‑like ancestors” www.nature.com/articles/s41...
Phylogenomic analyses indicate the archaeal superphylum DPANN originated from free-living euryarchaeal-like ancestors - Nature Microbiology
Phylogenetic reconstructions with conserved protein markers from the 11 known DPANN phyla reveal their monophyletic placement within the Euryarchaeota.
www.nature.com
June 17, 2025 at 2:25 PM
🎉 Now out “Phylogenomic analyses indicate the archaeal superphylum DPANN originated from free‑living euryarchaeal‑like ancestors” www.nature.com/articles/s41...
Reposted by Katherine Helliwell
I am hiring a research/technical specialist/manager to help us make the most out of new LC-MS instrumentation at USC! Please share the word and write me for more details. usc.wd5.myworkdayjobs.com/en-US/Extern...
Assistant Director of the Center for Proteomics Discovery (Research Program Administrator)
The USC Dana and David Dornsife College of Letters, Arts and Sciences is seeking a Research Program Administrator (non-Clinical) and Assistant Director of the USC Center for Proteomics Discovery. This...
usc.wd5.myworkdayjobs.com
June 5, 2025 at 4:43 PM
I am hiring a research/technical specialist/manager to help us make the most out of new LC-MS instrumentation at USC! Please share the word and write me for more details. usc.wd5.myworkdayjobs.com/en-US/Extern...
Reposted by Katherine Helliwell
🚨 We’re recruiting PhD students! 🚨
Join the Stem Cell Biology and Evolution lab at @lsiexeter.bsky.social to study planarians, stem cells & evolution.
2 projects available - 1 week left to apply!
Interested and no PhD yet? Apply now. Or help us spread the word! 🙌
www.exeter.ac.uk/research/ins...
Join the Stem Cell Biology and Evolution lab at @lsiexeter.bsky.social to study planarians, stem cells & evolution.
2 projects available - 1 week left to apply!
Interested and no PhD yet? Apply now. Or help us spread the word! 🙌
www.exeter.ac.uk/research/ins...
LSI PhD programme | Living Systems Institute | University of Exeter
www.exeter.ac.uk
June 1, 2025 at 5:02 PM
🚨 We’re recruiting PhD students! 🚨
Join the Stem Cell Biology and Evolution lab at @lsiexeter.bsky.social to study planarians, stem cells & evolution.
2 projects available - 1 week left to apply!
Interested and no PhD yet? Apply now. Or help us spread the word! 🙌
www.exeter.ac.uk/research/ins...
Join the Stem Cell Biology and Evolution lab at @lsiexeter.bsky.social to study planarians, stem cells & evolution.
2 projects available - 1 week left to apply!
Interested and no PhD yet? Apply now. Or help us spread the word! 🙌
www.exeter.ac.uk/research/ins...
Reposted by Katherine Helliwell
Join us @thembauk.bsky.social in Plymouth for the 4th edition of the Advances in Coccolithophore Research
🌊 🔬🦠🧪📈
⚠️Register Now: shorturl.at/ly1LT
#Coccolithophores #protistsonsky
Coccolithophore research on: Biogeochemistry, Cell Biology, Climate Change, Ecosystems
🌊 🔬🦠🧪📈
⚠️Register Now: shorturl.at/ly1LT
#Coccolithophores #protistsonsky
Coccolithophore research on: Biogeochemistry, Cell Biology, Climate Change, Ecosystems
Advances in Coccolithophore Research 2025
The Advances in Coccolithophore Research meeting aims to bring together international early career and established coccolithophore scientists. This is a hybrid meeting hosted at the MBA, Plymouth.
shorturl.at
May 16, 2025 at 1:18 AM
Join us @thembauk.bsky.social in Plymouth for the 4th edition of the Advances in Coccolithophore Research
🌊 🔬🦠🧪📈
⚠️Register Now: shorturl.at/ly1LT
#Coccolithophores #protistsonsky
Coccolithophore research on: Biogeochemistry, Cell Biology, Climate Change, Ecosystems
🌊 🔬🦠🧪📈
⚠️Register Now: shorturl.at/ly1LT
#Coccolithophores #protistsonsky
Coccolithophore research on: Biogeochemistry, Cell Biology, Climate Change, Ecosystems
Reposted by Katherine Helliwell
Today was a perfectly colorful day 🌈—on the way to sample coccolithophores, we stumbled upon a pink lake. Under the scope, I found green algae and diatoms in a “forest” of pink! 💗💚🔬
#protistsonsky #CoccoChannel #HRZZ
#protistsonsky #CoccoChannel #HRZZ
May 31, 2025 at 9:05 PM
Today was a perfectly colorful day 🌈—on the way to sample coccolithophores, we stumbled upon a pink lake. Under the scope, I found green algae and diatoms in a “forest” of pink! 💗💚🔬
#protistsonsky #CoccoChannel #HRZZ
#protistsonsky #CoccoChannel #HRZZ
Reposted by Katherine Helliwell
Great PhD opportunities at the Stazione Zoologica Anton Dohrn in Naples (Italy).
6 fellowships are available to carry out interdisciplinary training.
https://www.szn.it/index.php/it/bandi-e-concorsi/bandi-di-concorso/ph-d-program/ph-d-program-open-calls
Topics include the function of […]
6 fellowships are available to carry out interdisciplinary training.
https://www.szn.it/index.php/it/bandi-e-concorsi/bandi-di-concorso/ph-d-program/ph-d-program-open-calls
Topics include the function of […]
Original post on biologists.social
biologists.social
May 26, 2025 at 6:08 AM
Great PhD opportunities at the Stazione Zoologica Anton Dohrn in Naples (Italy).
6 fellowships are available to carry out interdisciplinary training.
https://www.szn.it/index.php/it/bandi-e-concorsi/bandi-di-concorso/ph-d-program/ph-d-program-open-calls
Topics include the function of […]
6 fellowships are available to carry out interdisciplinary training.
https://www.szn.it/index.php/it/bandi-e-concorsi/bandi-di-concorso/ph-d-program/ph-d-program-open-calls
Topics include the function of […]
Reposted by Katherine Helliwell
This is a super unique senior role on our technology team, during an exciting time for technology investment in the UK 👇
Our team is looking for a new senior colleague with experience leading the development of new marine sensing technology. Have a look! You'd join a highly-interdisciplinary team of great people developing novel instruments from concept to field deployments.
careers.noc.ac.uk/vacancy/prin...
careers.noc.ac.uk/vacancy/prin...
Careers | National Oceanography Centre
careers.noc.ac.uk
May 24, 2025 at 2:23 PM
This is a super unique senior role on our technology team, during an exciting time for technology investment in the UK 👇
Reposted by Katherine Helliwell
Yet again we are seeing "unprecedented" marine heatwaves in 2025.
buff.ly/mnEcYcV
What will we see in 2025 & beyond? @dansmale1.bsky.social comments, “If this continues through the summer we would expect to see widespread biological impacts. This is a significant warming event."
buff.ly/U6iBTBN
buff.ly/mnEcYcV
What will we see in 2025 & beyond? @dansmale1.bsky.social comments, “If this continues through the summer we would expect to see widespread biological impacts. This is a significant warming event."
buff.ly/U6iBTBN
May 22, 2025 at 3:31 PM
Yet again we are seeing "unprecedented" marine heatwaves in 2025.
buff.ly/mnEcYcV
What will we see in 2025 & beyond? @dansmale1.bsky.social comments, “If this continues through the summer we would expect to see widespread biological impacts. This is a significant warming event."
buff.ly/U6iBTBN
buff.ly/mnEcYcV
What will we see in 2025 & beyond? @dansmale1.bsky.social comments, “If this continues through the summer we would expect to see widespread biological impacts. This is a significant warming event."
buff.ly/U6iBTBN
Reposted by Katherine Helliwell
Congratulations to Professor Julian Hibberd, Head of the Department of Plant Sciences, University of Cambridge, who has been elected as a Fellow of the Royal Society for his groundbreaking work on C4 photosynthesis.
Read more: tinyurl.com/y53wvve3
#PlantSciences 🧪
@cambridgebiosci.bsky.social
Read more: tinyurl.com/y53wvve3
#PlantSciences 🧪
@cambridgebiosci.bsky.social
May 20, 2025 at 10:21 AM
Congratulations to Professor Julian Hibberd, Head of the Department of Plant Sciences, University of Cambridge, who has been elected as a Fellow of the Royal Society for his groundbreaking work on C4 photosynthesis.
Read more: tinyurl.com/y53wvve3
#PlantSciences 🧪
@cambridgebiosci.bsky.social
Read more: tinyurl.com/y53wvve3
#PlantSciences 🧪
@cambridgebiosci.bsky.social
My lithop flowered!! 😯💚
May 22, 2025 at 5:26 PM
My lithop flowered!! 😯💚
Reposted by Katherine Helliwell
'Ocean with #DavidAttenborough' - Out in cinemas TODAY! I am super proud to have worked on the film with @thembauk.bsky.social colleagues on the RV Sepia & the incredible team at Silverback Films
www.mba.ac.uk/marine-biolo... The best ocean documentary I have every seen! #oceanfilm #mustwatch 🌊🐙🪸🦞🐟
www.mba.ac.uk/marine-biolo... The best ocean documentary I have every seen! #oceanfilm #mustwatch 🌊🐙🪸🦞🐟
Marine Biological Association makes key contribution to new documentary film Ocean with David Attenborough | Marine Biological Association
Senior Research Fellow Dr Bryce Stewart and the Marine Biological Association's (MBA) research vessel ‘Sepia’ played a vital role in helping to create key
www.mba.ac.uk
May 8, 2025 at 12:53 PM
'Ocean with #DavidAttenborough' - Out in cinemas TODAY! I am super proud to have worked on the film with @thembauk.bsky.social colleagues on the RV Sepia & the incredible team at Silverback Films
www.mba.ac.uk/marine-biolo... The best ocean documentary I have every seen! #oceanfilm #mustwatch 🌊🐙🪸🦞🐟
www.mba.ac.uk/marine-biolo... The best ocean documentary I have every seen! #oceanfilm #mustwatch 🌊🐙🪸🦞🐟