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marcellejohnsonphd.bsky.social
Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
@marcellejohnsonphd.bsky.social
600 followers 2K following 18 posts
Plant Science🌱 | Virology🦠 | Lab & CompBio 🧫👩🏽‍💻| SciComm💡| Biotech Science Advisor 🧬🧪
PhD Virology @w-u-r.bsky.social
Plant virologist studying multipartitevirus evolution and transmission🦠🌱🦟
https://linktr.ee/marcelleljohnson
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marcellejohnsonphd.bsky.social
Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱 @marcellejohnsonphd.bsky.social · Nov 22
Hi👋
I’m a plant virologist studying multipartite virus evolution 🦠🌱 I combine greenhouse experiments🌱🍀,with molecular lab🧪🧫 , genomics and computational modelling💻 to understand how virus segment copies change in hosts over time📊
Happy to connect & discuss virology, plant science, eco-evo & scicomm
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
aewtospo.bsky.social
I hope to see lots of plant virologists at the American Society for Virology Meeting. asv.org/2025/05/09/p...
Plant Virology Satellite | American Society for Virology
ORGANIZER: Anna Whitfield, North Carolina State University, Councilor For Plant Virology A satellite symposium featuring key topics in plant virology spanning molecular mechanisms of gene expression…
asv.org
June 6, 2025 at 4:06 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
samillingworth.com
🌾🦠 Trade, war, and viral rice

A new study traces how Rice yellow mottle virus spread across Africa via caravan trade, seed exchange – and even WWI troop movements.

Plant virus history is human history too.

🔗 doi.org/10.1371/jour...

#PlantPathology #Rice #SciComm 🧪
Grains, trade and war in the multimodal transmission of Rice yellow mottle virus: An historical and phylogeographical retrospective
Author summary Rice yellow mottle virus (RYMV) poses a major threat to rice production in Africa. We explored through a multidisciplinary approach the links between the history of rice in East Africa ...
doi.org
June 19, 2025 at 12:16 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
leibniz-dsmz.bsky.social
Wondering how plant virus detectives work? Ask our expert Paolo Margaria at #BookAScientist.
appointments: www.leibniz-gemeinschaft.de/ueber-uns/ne...

#sequencing #plantvirus #hightroughput
May 23, 2025 at 8:37 AM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
leibniz-dsmz.bsky.social
News from the battle between plants and viruses – our expert Samar Sheat summarises the success of fighting cassava diseases.
book your session: www.leibniz-gemeinschaft.de/ueber-uns/ne...

#cassava #plantvirus #pathogens #food
May 23, 2025 at 8:44 AM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
natureportfolio.nature.com
AlphaFold’s highly accurate structural models transformed protein biology. Nature reports on the efforts to create a similar system for RNA and why it’s a tougher nut to crack. #RNAsky 🧪
RNA function follows form – why is it so hard to predict?
AlphaFold’s highly accurate structural models transformed protein biology,but RNA lags behind.
go.nature.com
April 5, 2025 at 1:22 AM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
aabiologists.bsky.social
Next week 200 virologists will arrive in Murcia, Spain for 'International Advances in Plant Virology 2025' :)
- You can join us online to catch up on the science!
- Thanks to our sponsors @bspp.bsky.social Loewe Diagostics and BIOREBA
- Register as online delegate here -> cvent.me/mNNvzA
International Advances in Plant Virology 2025. Online registration by Cvent
<div class="ag87-crtemvc-hsbk"><div class="css-vsf5of"><p style="text-align:left;" class="carina-rte-public-DraftStyleDefault-block">Plant viruses cause global and r. Online registration by Cvent
cvent.me
April 1, 2025 at 3:43 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
stepelka.bsky.social
We cordially invite you to the Experimental Plant Biology conference #PSEBP2025 which will be held at the University of Warsaw.

I will chair, together with Magda Krzymowska, a session on Plant Biotic Interactions.
Registration opens in a few days.

#plantsci
psepb2025.pl
PSEPB2025 » Strona główna
psepb2025.pl
March 20, 2025 at 8:57 AM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
inrae-bfp.bsky.social
📢 Research engineer / Postdoc opportunity! Join our team to study plant-virus interactions in cereals. Gain expertise in plant molecular biology, advanced microscopy, CRISPR, and crop improvement. Apply here (jobs.inrae.fr/en/ot-25488), or contact Syed Zaidi (syed.zaidi@inrae.fr).
March 24, 2025 at 12:55 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
rtds-group.bsky.social
On the 8th of April, our #EUFunded #VIRTIGATION project will host a session on how to control the devastating #ToBRFV #PlantVirus at the prestigious #IAPV25 conference of @aabiologists.bsky.social. Join us at this key #PlantHealth conference in #Murcia: www.rtds-group.com/news/iapv-25...
March 31, 2025 at 11:28 AM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
dhrebik.bsky.social
I am very happy to announce that we solved the in-virus #cryoEM structure of the #HIV matrix protein. The structure helped us to resolve a long mystery in HIV biology. A🧵1/5
Read more in Nature: www.nature.com/articles/s41... 🧪
March 3, 2025 at 6:57 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
cantlonlab.bsky.social
Some think, ‘I’m from a blue town/state, so writing an article won’t help.’ But it will. Explaining the local impacts of funding cuts gives supporters clear, concrete talking points so they can help advocate for science’s value to health, the economy, and society. It also rallies concern. 🧪🏠
cantlonlab.bsky.social CantlonLab @cantlonlab.bsky.social · Feb 18
Join us! Science Homecoming helps scientists reconnect with communities by writing about the importance of science funding in their hometown newspapers. We’ve mapped every small newspaper in the U.S. and provide resources to get you started. Help science get back home 🧪🔬🧬 🏠

sciencehomecoming.com
Science Homecoming
sciencehomecoming.com
March 2, 2025 at 11:46 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
viroid.bsky.social
There's a ~1000nt sub-viral RNA that shows up on every continent, and in humans, and it seems to have gone unnoticed! It has no sequence similarity to any database and codes for a wacky protein

Super happy to finally share my thesis work on "Obelisks"

tinyurl.com/yc54fzj9

#MicroSky #microbiomesky
A multi-panel diagram of features about "Obelisks". Top half, a) schematics of Obelisk-alpha, a 1164 nt long, apparent;y circular, predicted to be rod-shaped RNA that codes for two proteins, Oblin-1 and Oblin-2 where Oblin-1 is self-complementary. Obelisks bare no sequence similarity to any annotated genetic sequence. The predicted secondary structure is depicted as "Jupiter" plots (circular diagrams where chords represent predicted base pairs), and as skeleton diagrams (where parallel lines represent predicted base pairs). Bottom left, b) a schematic of the world map, with nations coloured in shades of red representing the number of datasets (from a subset database) that contain Obelisks (redder = more datasets), nations from all 7 continents are shaded. Bottom right, c) a predicted tertiary structure for Oblin-1, that appears to be a novel fold, represented as in cartoon format and as a topological diagram (right).
January 21, 2024 at 5:32 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
ameliarandich.bsky.social
Hey all! I’m looking for a virologist who would be willing to zoom with my virology class May 6 between 10-11:15 to give a talk on your work and take questions from 9 undergraduates. I’d make them read a paper of your choice in prep for your talk. Please share in virology circles! #microsky
January 23, 2025 at 11:49 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
incavirus.bsky.social
Interested in antiviral immunity in plant stem cells? Finding new pathways that keep viruses out? We have an open PhD position in my lab @mpi-mp-potsdam.bsky.social, follow the link below if the topic piques your interest! Contact me by email if you have questions. #IMPRS #plantvirus #plantPhD
February 5, 2025 at 4:26 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
pacyc184.bsky.social
Viroid-like “obelisk” agents are widespread in the ocean and exceed the abundance of RNA viruses in the prokaryotic fraction | The ISME Journal | Oxford Academic https://academic.oup.com/ismej/advance-article/doi/10.1093/ismejo/wraf033/8042533?rss=1&login=false
Viroid-like “obelisk” agents are widespread in the ocean and exceed the abundance of RNA viruses in the prokaryotic fraction
Abstract. “Obelisks” are recently discovered RNA viroid-like elements present in diverse environments with no phylogenetic similarity to any known biologic
dx.doi.org
February 26, 2025 at 10:48 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
somssich.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...

In conversation with Rosa Lozano-Duran from @geminiteamlab.bsky.social.

#PlantScience #PlantImmunity #PlantViruses
January 21, 2025 at 1:04 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
royalsocietypublishing.org
Our congratulations also go to Daniel J. Leybourne for being selected as runner-up in the #BiologyLetters #ECR Competition. Read Daniel’s paper “Genetic diversity in vector populations influences the transmission efficiency of an important plant virus” here: ow.ly/vrJo50UCok8
January 13, 2025 at 2:16 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
39northstl.bsky.social
Find more #STL #PlantScience and #AgTech Innovators here! DM us if you want to be added to the starter pack.

go.bsky.app/MxfEHdo
39 North AgTech Innovation District
Join the conversation
go.bsky.app
November 12, 2024 at 9:38 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
olimeacock.bsky.social
Our framework explaining why ecological interactions change between contexts is out in Ecology Letters!
A lovely collaboration with @saramitri.bsky.social which provides experimentally-testable links between the physiology and ecology of microbes.
onlinelibrary.wiley.com/doi/10.1111/...
Environment‐Organism Feedbacks Drive Changes in Ecological Interactions
Ecological interactions are central to our understanding of the composition and function of communities, but attempts to use them as a theoretical foundation for experimental ecology have been confou....
onlinelibrary.wiley.com
January 2, 2025 at 10:53 AM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
1000womeninstem.bsky.social
Let's try this BlueSky !

A dedicated account to highlight the #womeninSTEM and to give them the visibility they deserve.

Objective: 1,000 portraits of women scientists from all fields, all nationalities and all time periods.
October 16, 2023 at 1:16 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
tatsuyanobori.bsky.social
New year, new paper! Now published in @nature.com. We identified and characterised diverse immune cell states in plants under pathogen attack. My postdoc work in the Ecker lab at @salkinstitute.bsky.social. A thread (0/n)
#PlantScience
www.nature.com/articles/s41...
January 8, 2025 at 4:27 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
science.org
Scientists are starting to study—and debate—how the unique features of Bluesky might affect discussions of research and workplace culture, and efforts to engage with the public. scim.ag/428RTYG
As academic Bluesky grows, researchers find strengths—and shortcomings
Platform fosters collegial interactions among scientists, but potentially limits interactions beyond the academic community
scim.ag
January 9, 2025 at 2:21 PM
marcellejohnsonphd.bsky.social
Looks like a great plant virology meeting.

#plantvirus #plantvirology
aabiologists.bsky.social Association of Applied Biologists @aabiologists.bsky.social · Jan 9
Abstract submission and registration OPEN for 'International Advances in Plant Virology' (IAPV25).
📆 April 8-11 2025 Murcia 🇪🇸
Come along for 1,2,3 or 4 days :) Awesome selection of invited speakers AND lots of space for submitted presentations!
#plantscience
web.cvent.com/event/f187fa...
January 10, 2025 at 3:36 AM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
ismpmi.bsky.social
Registration is now open! Join us for the 2025 #EarlyCareerShowcase and explore the future of our field. This exciting event will celebrate innovation in #PlantScience and #PlantMicrobe interactions.
Free for members! Learn more and save your spot today: bit.ly/4funAyV
January 8, 2025 at 7:07 PM
Reposted by Marcelle Johnson, PhD 🇿🇦 🇸🇪 🇳🇱
cydharrell.bsky.social
great article about the devaluation of absolutely anything where women achieve 50%. which is a thing.
screenshot from the article: Other disciplines that have experienced male flight include: Biology. While most STEM professions remain male dominated, 10 years ago biology became a 50/50 male/female split. By 2022, 62% of biology majors were women. Biology is now often considered the “easiest” of the STEM majors. Interior Design. William Morris is considered the father of interior design. After finishing his education at Oxford, he began an architectural design school called “the Firm”— just for men. Many universities had interior design programs. Until women began to enter the design space, at which point it was relegated to a mere “hobby.” Since the influx of women, interior design programs have been pulled from almost all universities. Teaching. In the 18th century, schooling in colonial America was reserved for the white and the wealthy. Most tutors were men who taught boys. By the middle of the 19th century, girls started becoming students and women became teachers. Consequently, men swiftly left the profession, the pay dropped and teaching was no longer considered a prestigious occupation. Similar patterns of male flight have occurred in nursing, cheerleading, social work, architecture, gymnastics, library sciences and psychology.
January 1, 2025 at 5:52 PM