Ren Ujimatsu
@rujimatsu.bsky.social
66 followers 81 following 18 posts
PhD student @UTokyo/plant pathology/Colletotrichum fungi/pathogen-mutualist continuum she/her
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Reposted by Ren Ujimatsu
elife.bsky.social
The koji-fungus, Aspergillus oryzae, traditionally used in Japanese brewing, is now widely used to make enzymes.

It seems its capacity for enzyme production is thanks to its unique ability to proportionally increase cell volume and nuclear number.
buff.ly/bPSNRL6
Reposted by Ren Ujimatsu
kschlaeppi.bsky.social
updated preprint: Intriguingly, Arabidopsis responded with both, improved growth and enhanced defence to a maize-conditioned soil microbiome, and this dual microbiome feedbacks were mediated by priming of the defences. Credits to Katja Stengele et al.!
www.biorxiv.org/content/10.1...
Benzoxazinoid-mediated microbiome feedbacks enhance Arabidopsis growth and defense
Plants modulate their surrounding microbiome via root exudates and this conditioned soil microbiome feeds back on the performance of the next generation of plants. How plants can perceive this altered...
www.biorxiv.org
rujimatsu.bsky.social
Exactly😣 It was big conference that I rarely got to see you. Next time, let’s have lunch or dinner — I want to talk about our science! I hope your new journey in Switzerland goes well🤞
rujimatsu.bsky.social
Congrats Fantin🎊 Beautiful work!!
Reposted by Ren Ujimatsu
keihiruma.bsky.social
We have posted our latest preprint. We explore how an endophytic fungus promotes plant growth and fitness under fluctuating nitrogen-limited conditions in both field and laboratory settings, in additively with bacteria attracted to its hyphae. We hope you enjoy it!
biorxiv-plants.bsky.social
Nitrogen acquisition and selective bacterial attraction through fungal hyphae promote plant growth and health under nitrogen limitation https://www.biorxiv.org/content/10.1101/2025.08.05.668771v1
Reposted by Ren Ujimatsu
plantteaching.bsky.social
Epipactis helleborine, also known as broad leaf helleborine. An orchid with many small green-purple flowers starting to open.
Finding wild orchids brings me joy.
Epipactis helleborine, also know as broad leaf helleborine. An orchid with many small green-purple flowers starting to open .
Reposted by Ren Ujimatsu
fungalcell.bsky.social
Cell wall remodeling in a fungal pathogen is required for hyphal growth into microspaces. #mBio This study highlights the critical role of hyphal plasticity and cell wall remodeling in the pathogenicity of Fusarium oxysporum by genetics and micro-channel devices. journals.asm.org/doi/10.1128/...
Reposted by Ren Ujimatsu
Reposted by Ren Ujimatsu
rujimatsu.bsky.social
Next Monday!
rujimatsu.bsky.social
Webinar Alert🌱
Want to learn cutting-edge studies in plant-microbe interaction? Join our webinar "Advances in Plant-Microbe Interactions: Insights from Asia to the World" with
@elifecommunity.bsky.social !
📅 May 19, 2025 | 🕝 JST 14:30–17:20 (UTC+9)
📌Register: u-tokyo-ac-jp.zoom.us/webinar/regi...
rujimatsu.bsky.social
Webinar Alert🌱
Want to learn cutting-edge studies in plant-microbe interaction? Join our webinar "Advances in Plant-Microbe Interactions: Insights from Asia to the World" with
@elifecommunity.bsky.social !
📅 May 19, 2025 | 🕝 JST 14:30–17:20 (UTC+9)
📌Register: u-tokyo-ac-jp.zoom.us/webinar/regi...
Reposted by Ren Ujimatsu
kenichitsuda.bsky.social
An online webinar: Advances in Plant-Microbe Interactions:
Insights from Asia to the World on May 19.

organized by Ren Ujimatsu, who won a 2024 Ben Barres Spotlight Award from eLife @elife.bsky.social

Her recent publication
www.cell.com/current-biol...

preprint
www.biorxiv.org/content/10.1...
rujimatsu.bsky.social
Very happy to organize this exciting webinar. Thank you for everything, Prof. Tsuda!
rujimatsu.bsky.social
Thanks a lot for your question! Our pathogenic strain “Ct3” become beneficial in high temperature (Hiruma et al., Nat. Commun. 2023). The CtBOT6 genes are identical between the two strains, but interestingly, there is slight deference in 1kb upstream of start codon.
rujimatsu.bsky.social
I love to read the website Plantae, so very honored to be featured! Thank you🙏
plantteaching.bsky.social
Plant Science Research Weekly April 25 plantae.org/plant-scienc... (2/2) Cryptic giant virus infection; A fungal switch between ally and aggressor; Stopping citrus greening with peptide therapy; A mechanosensitive ion channel helps parasitic plants clamp down.
Top left panel shows a parasitic plant winding around a host, with the haustoria highlighted in the panel below. On the right is a diagram that shows the role of the mechanosensitive ion channel CcMCA1, and the hyptothetical downstream pathways that transduce the mechanical stimulation into haustorium development, involving auxin and ethylene.
rujimatsu.bsky.social
Thank you very much!
rujimatsu.bsky.social
Thank you Fantin☺️ Hope to see you again in near future (maybe in mpmi congress?)
rujimatsu.bsky.social
Our work showed that a single gene expression enables Ct changing its lifestyle ranging from beneficial to pathogenic. But, what regulates CtBOT6 expression? What is actual roles of ABA-BOT-derived compounds in planta?
We want to investigate the remaining mysteries! (8/8)
rujimatsu.bsky.social
Interestingly, plant defense and senescence-related genes were highly upregulated by CtBOT6 OX infection, partially depending on plant ABA signaling. Under such a condition, CtBOT6 OX fungus can colonize even leaf tissues, where Ct WT cannot invade, to complete life cycle. (7/8)
rujimatsu.bsky.social
The transcriptome analysis showed that thousands of fungal genes were upregulated by CtBOT6 OX in liquid media. When we knockout ABA-BOT enzymatic genes in CtBOT6 OX fungi, some gene expressions were cancelled. So ABA-BOT metabolites may affect fungal gene regulation. (6/8)
rujimatsu.bsky.social
Surprisingly, CtBOT6 overexpression in endophytic Ct strain makes good guy into hyper-virulent fungi. Moreover, fungal virulence was heightened in CtBOT6 expression dose-dependent manner. What’s happening in fungi and host plant?? (5/8)
rujimatsu.bsky.social
Here we found the gene knockout of a transcription factor named CtBOT6 makes Ct3 into beneficial. ABA-BOT gene expressions were disrupted in the mutant. CtBOT6 overexpression increase the production of ABA-BOT-derived compounds, so CtBOT6 positively regulates ABA-BOT. (4/8)