Aleksandra Obrępalska-Stęplowska
scientist, assoc. professor,
molecular biology, plant-microbe-insect interactions, virology, microbiome
coffee lover ☕
- Our first paper in 2026 We worked on cornflower (C. cyanus) and mined metatranscriptomes of susceptible vs highly herbicide-resistant plants and discovered seq of previously unknown viruses (tentatively named cornflower partitivirus 1 & 2) enviromicro-journals.onlinelibrary.wiley.com/doi/10.1111/...
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- Reposted by Aleksandra Obrępalska-StęplowskaRereading these two papers: Holes in the hologenome: why host-microbe symbioses are not holobionts. journals.asm.org/doi/10.1128/... The Hologenome Concept: Helpful or Hollow? journals.plos.org/plosbiology/... And I still find myself in general agreement with most of the points in them
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- Bacteria associated with beetle increase the plant's emission of VOCs, incl. GLVs and benzenoids. The blend content & amount of induced VOCs in plants depends on the insect's developmental stage and the type of damage to the plant #insect #holobiont #microbiome link.springer.com/article/10.1...
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- Ally or adversary? Insect #symbionts contribute to insect adaptation to protease inhibitors but impair their development and survival in suboptimal laboratory conditions Results of #NCN Preludium by my former PhD, Beata #beetle #proteaseinhibitors #insectmicrobes www.nature.com/articles/s41...
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- Reposted by Aleksandra Obrępalska-StęplowskaExcited to share our new preprint co-led by @jnoms.bsky.social! Here we reveal an exceptional diversity of viral 2H phosphodiesterases (PDEs) that enable immune evasion by selectively degrading oligonucleotide-based messengers. This 2H PDE fold has evolved striking substrate breath & specificity.
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- Reposted by Aleksandra Obrępalska-StęplowskaOut now in its final peer-reviewed form @asm.org's Journal of Virology! doi.org/10.1128/jvi.... @dome-vienna.bsky.social @erc.europa.eu @amersocvirology.bsky.social
- New work out! Spearheaded by Lotte, we have developed a single-molecule messenger RNA fluorescence in situ hybridisation (smFISH) protocol for #giantViruses in an #Acanthamoeba host. doi.org/10.1101/2025... 1/4 #ProtistsOnSky #MicroSky @dome-vienna.bsky.social @cemess.bsky.social @erc.europa.eu
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- On May 12th, we celebrate International Plant Health Day. Nothing without them #PlantHealth #OneHealth
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- New "toy" almost ready
- Registration is now open! You can spread the word psepb2025.pl
- 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
- Reposted by Aleksandra Obrępalska-StęplowskaA must-read for any microbiome researcher 🦠📐and a new addition to our #bestpractices series Planning and describing a microbiome data analysis by @amydwillis.bsky.social and @davidandacat.bsky.social www.nature.com/articles/s41...
- 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
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- Reposted by Aleksandra Obrępalska-Stęplowska1/ Transposable elements are often called "jumping genes" because they mobilize within genomes. 🧬 But did you know they can also jump 𝘣𝘦𝘵𝘸𝘦𝘦𝘯 cells? 🤯 Our new study reveals how retrotransposons invade the germline directly from somatic cells. www.biorxiv.org/content/10.1... A short thread 🧵👇
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- Genetic variability in the 3'UTR RNA1 of tomato torrado virus - implications for virus #transmission by whiteflies The next paper from our lab with Marta Budziszewska - the lead scientist 🦠🍅 #torradovirus #plantscience #virology #plantpathology www.sciencedirect.com/science/arti...
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- A very interesting day and still a few hours to go 🙂 We have a new team member - Diksha Kumari - welcome to our lab! 👋🙂 Moreover,we started the search for a signal from microcosm, namely from inside of cells in our samples,in cooperation with IBCH. We hope for interesting results!
- For coffee lovers: 'Conclusions Drinking coffee in the morning may be more strongly associated with a lower risk of mortality than drinking coffee later in the day' academic.oup.com/eurheartj/ad...
- Our publication on satellite RNAs associated with plant viruses ( onlinelibrary.wiley.com/doi/10.1111/... ) appeared in the first issue of 'Biological Reviews' in 2025, along with a number of very interesting papers. onlinelibrary.wiley.com/toc/1469185x...
- Reposted by Aleksandra Obrępalska-StęplowskaMore Plant Virologists joining Blue Sky! Check out and follow our updated members! go.bsky.app/426v1X8at://did:plc:e6vdf2bgffbcdzkbllvuzcxp/app.bsky.graph.starterpack/3lbkjz4dqoh25
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- For interested in the box tree moth (Cydalima perspectalis), my colleague from the Department (and former PhD student) and an Institute colleague wrote a pest profile for this insect, with information on biology, invasiveness, control and nice pics
- Reposted by Aleksandra Obrępalska-StęplowskaFor Maths fans, 2025 is a square. 45² = 45 x 45 = 2025 Also, 9² x 5² = 2025 40² + 20² + 5² = 2025 My favourite? 1³+2³+3³+4³+5³+6³+7³+8³+9³ = 2025 #Mathematics #teaching #education
- Happy New Year! Good luck and FUN in 2025! 🥂🤗
- Reposted by Aleksandra Obrępalska-StęplowskaGood piece by @natureportfolio.bsky.social. The erosion of thinking time—driven by admin, bureaucracy, industry agendas, and unrealistic output targets—stifles curiosity-led science. These pressures undermine innovation and the intellectual freedom vital for real progress. 🧪🌱🌍 #ScienceIsNotBusiness
- well, well... Kuafuorterviruses, a novel major lineage of reverse-transcribing viruses in the genomes of animals (of 11 phyla) academic.oup.com/ve/advance-a...
- How fast are viruses spreading in the wild? journals.plos.org/plosbiology/...
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- Jari Valkonen was a very nice and great person. An expert and mentor to many in the plant virology community. It was an honor to work with him in the Nordic-Baltic project on PMTV. He will be greatly missed ;(
- ‘Silly and pompous’: Official new names for viruses rile up researchers #virustaxonomy #virology #taxonomy #ICTV - International Committee on Taxonomyof Viruses (ICTV www.science.org/content/arti...
- Reposted by Aleksandra Obrępalska-Stęplowskathis is now published y'all #giantvirus academic.oup.com/nar/advance-...
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- We have new DOCTOR in our team - Barbara Wrzesińska-Krupa :) The reviewers and the committee requested that the dissertation be distinguished. Dissertation was on plant-virus-satellite RNA and insect vector interactions. It was a very good day!
- Establishing a comprehensive web-based analysis platform for Nicotiana benthamiana genome and transcriptome onlinelibrary.wiley.com/doi/10.1111/...
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- great news! have to check Bsky indexing on our paper on #insect #microbiome :) CLB-associated bacteria enhance the survival of their host upon insecticide treatments and respond differently to insecticides with different modes of action enviromicro-journals.onlinelibrary.wiley.com/doi/full/10....
- Reposted by Aleksandra Obrępalska-StęplowskaEight years later, I revisit the tree of life. “Future trees may need to distinguish not only between cultured and uncultured lineages, but between extant and extinct” rdcu.be/dPNpB
- Invasion of the four kingdoms: the parasite journey across plant and non-plant hosts #nicecitations onlinelibrary.wiley.com/doi/10.1111/...
- To dobry ruch (po tym jak bogate wydawnictwa zdemolowały dobre intencje naukowców/agencji naukowych swoją pazernością)
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- It explains a lot www.nature.com/articles/d41...
- Wow! This is fast!
- Reposted by Aleksandra Obrępalska-StęplowskaWe’re delighted to share our latest preprint from the Hogenhout lab (@saskiahogenhout.bsky.social) on the molecular mechanisms on plant-aphid interactions. Here we show how the aphid Mp10 effector protein acts as a local anaesthetic to suppress the plant perception of aphid attack
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- Is there already a plant virology starter pack? #plantscience #plantvirology
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