Lightnews — Scholar-powered news

Reposted by Noelle Held

Katherine Helliwell @kehelliwell.bsky.social · Jul 31

🌊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

6 9

Noelle Held @proteocean.bsky.social · Jun 5

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

8 4

Noelle Held @proteocean.bsky.social · Mar 4

Super glad to share two new papers about how nutrient gradients impact alkaline phosphatase in the ocean. This was "that project" which followed from PhD to Postdoc to Assist. Prof, motivated by awesome collaborators! egusphere.copernicus.org/preprints/20... egusphere.copernicus.org/preprints/20...

Part 1: Zonal gradients in phosphorus and nitrogen acquisition and stress revealed by metaproteomes of Prochlorococcus and Synechococcus

Abstract. Ocean warming alongside changes to the natural and anthropogenic supply of key nutrient resources such as nitrogen, phosphorus and trace metals is predicted to alter the magnitude and stoich...

egusphere.copernicus.org

3 6

Noelle Held @proteocean.bsky.social · Feb 7

🔥Thanks, Don Beyer and staff!

Congressman Don Beyer @beyer.house.gov · Feb 7

The Trump Administration's list of censored scientific terms that get NSF grant proposals flagged contains "women” and “female”, but no mention of “men” or “male.” There is “black” and “indigenous” on this list, but no “white.” The only identity not censored is mine.
youtu.be/dHXbpj1Z3UU

Don Beyer Speaks About Trump's NSF Censorship on the House Floor

YouTube video by Congressman Don Beyer

youtu.be

Reposted by Noelle Held

Union of Concerned Scientists @ucs.org · Feb 6

🚨 The Trump administration is attempting to seize power beyond what the Constitution allows—giving Elon Musk, an unelected billionaire, unchecked influence.

As a federal scientist, expert, or civil servant, you have rights. Don’t let them bully you.

These resources can help: act.ucsusa.org/4hqSJoz

7 140 280

Noelle Held @proteocean.bsky.social · Feb 6

We’ve been sampling the Santa Monica bay since Jan for changes in the marine microbiome due to runoff of debris from the fires. Today I brought a sampling buddy along. We should teach him to pull the cart.

A slightly wet dog standing on Santa Monica pier

5

Reposted by Noelle Held

Jeremy BOO! Yoder 🎃💀🕷️ @jbyoder.org · Jan 28

Reiterating my call to fellow federally-funded scientists: Call your reps, tell them how this hurts science and everything good that comes from science

(Also non-scientists, and scientists without federal funding! But the more of us who can directly speak to the impacts of these freezes the better)

Jonathan Lambert @jonlambert.bsky.social · Jan 27

The National Science Foundation cancelled over 60 grant review panels today, effectively grinding funding of new projects to a halt.

The so-far indefinite pause comes as NSF grapples with the impact Trump's executive orders will have on their grantmaking process.
www.npr.org/sections/sho...

National Science Foundation freezes grant review in response to Trump executive orders

The National Science Foundation has cancelled all grant review panels this week. It's unclear how long the pause could last.

www.npr.org

3 160 250

Reposted by Noelle Held

Maggi Brisbin @margaretbrisbin.bsky.social · Jan 16

MICO/Brisbin lab is hosting Making Waves REUs this summer! Please share with your favorite undergrads! Are you an undergrad excited about oceanography? Apply or reach out with questions! #reu #microbialsky

2

Noelle Held @proteocean.bsky.social · Jan 1

I really wanted a long distance penpal as a kid - so a fun upside of the transientness of early career academia is that I am now sending new years cards to friends all over the world - just posted to Germany, Australia, Switzerland, the UK, Italy, Russia, France, Canada, and Chile!

2

Reposted by Noelle Held

Manuel Kleiner @manuelkleiner.bsky.social · Dec 27

We showed that #metaproteomics based "Stable isotope fingerprinting can directly link intestinal microorganisms with their carbon source and captures diet-induced substrate switching in vivo"
www.biorxiv.org/content/10.1...
Great work by Angie Mordant and Alfredo Blakeley-Ruiz @alfredob.bsky.social

Stable isotope fingerprinting can directly link intestinal microorganisms with their carbon source and captures diet-induced substrate switching in vivo

Diet has strong impacts on the composition and function of the gut microbiota with implications for host health. Therefore, it is critical to identify the dietary components that support growth of spe...

www.biorxiv.org

10 20

Noelle Held @proteocean.bsky.social · Dec 20

More good news to round out the year, Proteocean Lab PhD student Mia Franks is a Wrigley Institute Graduate Fellow! She joins a very cool, very diverse group of student researchers and will quantify nutrient colimitation in the San Pedro Channel. Yay Mia! dornsife.usc.edu/wrigley/2024...

Meet the 2025 Wrigley Institute Graduate Fellows - Wrigley Institute for Environment and Sustainability

Creating a more sustainable and environmentally just future for our planet and all who live on it

dornsife.usc.edu

2

Noelle Held @proteocean.bsky.social · Dec 18

This work is transforming my own approach to nutrient incubations and omics data - how can we design these to be more quantitative?

1

Noelle Held @proteocean.bsky.social · Dec 18

What does it really mean to be in nutrient colimitation? We demonstrate a distinct growth phenotype and that (co)limitation can (and should!) be quantified. The result of many late afternoon chats with @michaelmanhart.bsky.social. Let us know what you think! www.pnas.org/doi/10.1073/pnas.2400304121

www.pnas.org

1 6 12

Noelle Held @proteocean.bsky.social · Dec 6

5 years ago toda I defended my thesis (thanks for the reminder @maksaito.bsky.social!) 1 year ago today was my first day in LA. Time flies! The dog is not impressed.

1 3

Reposted by Noelle Held

Cameron Thrash @jcamthrash.bsky.social · Apr 30

We're still looking for a postdoc in metabolic modeling and culture-based validation. If it sounds like you, reach out to discuss! www.isme-microbes.org/jobs/postdoc...

13 2

Noelle Held @proteocean.bsky.social · Apr 23

And it takes me two weeks to install a python library.

Liz Neeley @lizneeley.bsky.social · Apr 23

Just incredible news on reviving Voyager I.

Think of it: a computer chip 15 billion(!) miles away is broken. The solution is to repackage & move key software, w/ code sent via radio signal that takes 22+ hrs to reach that little 46yr old machine.

AND IT IS WORKING.

blogs.nasa.gov/voyager/2024...

NASA’s Voyager 1 Resumes Sending Engineering Updates to Earth – Voyager

blogs.nasa.gov

1 2

Noelle Held @proteocean.bsky.social · Apr 17

Starting my rejections garden. Adding a plant for every no. Going strong at 4 months in - I’ll have an epic office garden in no time. Anyway, even though it feels crummy, there can be growth. 🌿

3

Noelle Held @proteocean.bsky.social · Apr 9

Has anyone had experience with a preprint being published, along with a bunch of AI text and a fake image, on one of those NFT sites? It grosses me out, not sure of legality??

1

Reposted by Noelle Held

Michael Manhart @michaelmanhart.bsky.social · Mar 5

Microbes need many different resources, but do some of these resources simultaneously COLIMIT growth? @proteocean.bsky.social and I provide a new review of this concept, a summary of evidence that colimitation occurs in natural environments, and its causes/consequences. doi.org/10.32942/X2S... 1/6

Are microbes colimited by multiple resources?

doi.org

1 2 6

Noelle Held @proteocean.bsky.social · Mar 1

Time for another new lab poll - What ultra pure water system does your lab have and do you like it?

2

Noelle Held @proteocean.bsky.social · Feb 9

Second growth on HEPES and basically all buffers.

Paul Carini @uncultured.carinilab.com · Feb 8

Whenever we do nutrient limitation experiments (usually N and P, less often S) we *always* test if the organism can extract nutrients from the buffer. Pretty sure HEPES can be broken down too.

1

Noelle Held @proteocean.bsky.social · Jan 9

Cool opportunity if you’d like to postdoc at USC and work across departments in sustainability! Awesomely, the fellowship includes targeted career development! We’re ramping up relevant themes in the proteocean lab, contact me! www.ssf.usc.edu

2 1

Noelle Held @proteocean.bsky.social · Nov 25

In times like these the Oceanography training really pays off - I basically got a PhD in shipping weird stuff halfway across the world.

1 5

Noelle Held @proteocean.bsky.social · Nov 16

First instance of helpless panic waiting for a grant to route through approvals, minutes before agency deadline: ✅ Also, first instance of grant manager angel saving the day: ✅ What right of passage is next?

1 3

Reposted by Noelle Held

Michael Manhart @michaelmanhart.bsky.social · Oct 3

Our lab is recruiting a Ph.D. student for fall 2024! If you are interested in the ecology, evolution, and systems biology of microbial communities (especially using theory and modeling), please apply by November 1 according to the attached ad and link
qevomicrolab.org/wp-content/u...

8 11