Chikae Tatsumi
@chikaetatsumi.bsky.social
Assistant Professor @oistedu.bsky.social. Microbial Ecologist, Ecosystem Ecologist, and Mom of two🦠🍄🌏🌳🍃👩🔬
https://www.oist.jp/research/research-units/mee/chikae-tatsumi
https://www.oist.jp/research/research-units/mee/chikae-tatsumi
Pinned
Chikae Tatsumi
@chikaetatsumi.bsky.social
· Nov 17
Finally settled in at OIST! Welcomed a wonderfully helpful lab technician and equally helpful administrative staff members, two enthusiastic rotation students (one of whom joined our unit as our first PhD student, yaaay!), a motivated internship student, and even a NEW BABY!!🙌✨
Our paper is out in Plant and Soil!🎉 Microbial mechanisms underlying the reduction of soil mineral nitrogen availability by ectomycorrhizal tree introduction in cedar plantations🌲🌳Many thanks Sawada-san for leading this great work!!
link.springer.com/10.1007/s111...
link.springer.com/10.1007/s111...
Microbial mechanisms underlying the reduction of soil mineral nitrogen availability by ectomycorrhizal tree introduction in cedar plantations - Plant and Soil
Background and aims Forest mycorrhizal type and soil acidity strongly influence soil nitrogen (N) availability. Arbuscular mycorrhizal pure cedar plantations are expected to exhibit higher soil minera...
link.springer.com
December 19, 2025 at 12:09 PM
Our paper is out in Plant and Soil!🎉 Microbial mechanisms underlying the reduction of soil mineral nitrogen availability by ectomycorrhizal tree introduction in cedar plantations🌲🌳Many thanks Sawada-san for leading this great work!!
link.springer.com/10.1007/s111...
link.springer.com/10.1007/s111...
Reposted by Chikae Tatsumi
Published!📖
The relationships between plants and soils in forests are shaped by dominant overstory trees and the density and composition of understory trees. These findings may help predict how shifts in forest composition affect biogeochemical cycling🌳🧪
Read more:https://buff.ly/htQcfPQ.
The relationships between plants and soils in forests are shaped by dominant overstory trees and the density and composition of understory trees. These findings may help predict how shifts in forest composition affect biogeochemical cycling🌳🧪
Read more:https://buff.ly/htQcfPQ.
December 11, 2025 at 8:30 AM
Published!📖
The relationships between plants and soils in forests are shaped by dominant overstory trees and the density and composition of understory trees. These findings may help predict how shifts in forest composition affect biogeochemical cycling🌳🧪
Read more:https://buff.ly/htQcfPQ.
The relationships between plants and soils in forests are shaped by dominant overstory trees and the density and composition of understory trees. These findings may help predict how shifts in forest composition affect biogeochemical cycling🌳🧪
Read more:https://buff.ly/htQcfPQ.
Reposted by Chikae Tatsumi
The first chapter of my dissertation is finally published in @esajournals.bsky.social! We determined which microbial characteristics best explain soil nutrient cycling and their importance compared to plant and soil factors 🍄🌱 doi.org/10.1002/ecs2... @nahpo.bsky.social @k8eatherton.bsky.social
December 1, 2025 at 7:41 PM
The first chapter of my dissertation is finally published in @esajournals.bsky.social! We determined which microbial characteristics best explain soil nutrient cycling and their importance compared to plant and soil factors 🍄🌱 doi.org/10.1002/ecs2... @nahpo.bsky.social @k8eatherton.bsky.social
Reposted by Chikae Tatsumi
Six years of monitoring in a warmed forest showed a decrease in nitrogen emissions due to reduced microbial activity in dry soil. The result was contrary to predictions and challenges ecosystem model assumptions. In PNAS: https://ow.ly/Yf1550Xyjpl
November 26, 2025 at 10:00 PM
Six years of monitoring in a warmed forest showed a decrease in nitrogen emissions due to reduced microbial activity in dry soil. The result was contrary to predictions and challenges ecosystem model assumptions. In PNAS: https://ow.ly/Yf1550Xyjpl
Reposted by Chikae Tatsumi
A two decade long experiment in the Sierra Nevada found that regular prescribed burns promote carbon sequestration in live trees and plants, maintaining forests’ long-term ability to store carbon while also reducing wildfire hazard. news.berkeley.edu/2025/11/17/p...
Prescribed burning helps store forest carbon in big, fire-resistant trees - Berkeley News
A two decade long experiment in the Sierra Nevada found that regular prescribed burns promote carbon sequestration in live trees and plants, maintaining forests’ long-term ability to store carbon whil...
news.berkeley.edu
November 18, 2025 at 7:57 PM
A two decade long experiment in the Sierra Nevada found that regular prescribed burns promote carbon sequestration in live trees and plants, maintaining forests’ long-term ability to store carbon while also reducing wildfire hazard. news.berkeley.edu/2025/11/17/p...
Finally settled in at OIST! Welcomed a wonderfully helpful lab technician and equally helpful administrative staff members, two enthusiastic rotation students (one of whom joined our unit as our first PhD student, yaaay!), a motivated internship student, and even a NEW BABY!!🙌✨
November 17, 2025 at 7:56 AM
Finally settled in at OIST! Welcomed a wonderfully helpful lab technician and equally helpful administrative staff members, two enthusiastic rotation students (one of whom joined our unit as our first PhD student, yaaay!), a motivated internship student, and even a NEW BABY!!🙌✨
Reposted by Chikae Tatsumi
Mycorrhizal networks transfer jasmonic acid to recruit pathogen-suppressors
@cp-trendsmicrobiol.bsky.social Spotlight from @dromius.bsky.social on @cp-cellhostmicrobe.bsky.social paper from Zhong Wei/Xingang Zhou with @mrillig.bsky.social @mvanderheijden.bsky.social
www.cell.com/trends/micro...
@cp-trendsmicrobiol.bsky.social Spotlight from @dromius.bsky.social on @cp-cellhostmicrobe.bsky.social paper from Zhong Wei/Xingang Zhou with @mrillig.bsky.social @mvanderheijden.bsky.social
www.cell.com/trends/micro...
Mycorrhizal networks transfer jasmonic acid to recruit pathogen-suppressors
Common mycorrhizal networks (CMNs) formed by arbuscular mycorrhizal fungi interconnect
neighbouring plants. New evidence from Zhang et al. demonstrates that CMNs transfer
jasmonic acid from necrotroph...
www.cell.com
November 12, 2025 at 9:25 AM
Mycorrhizal networks transfer jasmonic acid to recruit pathogen-suppressors
@cp-trendsmicrobiol.bsky.social Spotlight from @dromius.bsky.social on @cp-cellhostmicrobe.bsky.social paper from Zhong Wei/Xingang Zhou with @mrillig.bsky.social @mvanderheijden.bsky.social
www.cell.com/trends/micro...
@cp-trendsmicrobiol.bsky.social Spotlight from @dromius.bsky.social on @cp-cellhostmicrobe.bsky.social paper from Zhong Wei/Xingang Zhou with @mrillig.bsky.social @mvanderheijden.bsky.social
www.cell.com/trends/micro...
So excited to share our recent paper on the street tree microbiome in urban environments, published in Nature Cities! Huge thanks to Katie @k8eatherton.bsky.social for leading such fantastic work and for her excellent summary (check out her post)!
🌳 Big news! My paper “Disruption of the oak tree microbiome with urbanization” is now out in Nature Cities! 🏙️🌿
Cities are full of life we don’t see, including microbes that live in and on trees.
🔗 doi.org/10.1038/s442...
Cities are full of life we don’t see, including microbes that live in and on trees.
🔗 doi.org/10.1038/s442...
Disruption of the oak tree microbiome with urbanization - Nature Cities
Urbanization disrupts oak tree microbiomes by reducing beneficial fungi and increasing plant and human pathogens across leaves, roots and soils, with consequences for tree health, urban climate mitiga...
doi.org
October 15, 2025 at 7:48 AM
So excited to share our recent paper on the street tree microbiome in urban environments, published in Nature Cities! Huge thanks to Katie @k8eatherton.bsky.social for leading such fantastic work and for her excellent summary (check out her post)!
Reposted by Chikae Tatsumi
2 weeks left to apply! #FacultyHiring
📢 #FacultyHiring: OIST is hiring! We invite exceptional scientists to apply for faculty positions in:
- Ecology, Environmental Science, Earth Science, and Oceanography
- Physics and Quantum Science (including related fields)
🔗: www.oist.jp/careers/facu...
- Ecology, Environmental Science, Earth Science, and Oceanography
- Physics and Quantum Science (including related fields)
🔗: www.oist.jp/careers/facu...
October 3, 2025 at 8:28 AM
2 weeks left to apply! #FacultyHiring
Reposted by Chikae Tatsumi
Women, non-native English speakers & those form low-income countries are disadvantaged in science but by how much? We found that women with non-English first languages from low-income countries publish up to 70% fewer in English than their counterparts. 1/5
doi.org/10.1371/jour...
#languagebarriers
doi.org/10.1371/jour...
#languagebarriers
September 19, 2025 at 2:46 AM
Women, non-native English speakers & those form low-income countries are disadvantaged in science but by how much? We found that women with non-English first languages from low-income countries publish up to 70% fewer in English than their counterparts. 1/5
doi.org/10.1371/jour...
#languagebarriers
doi.org/10.1371/jour...
#languagebarriers
Reposted by Chikae Tatsumi
Out now in @science.org, OIST researchers and collaborators find 79% of endemic ant species in Fiji in decline, highlighting the vulnerability of island biodiversity to ecosystem changes: www.oist.jp/news-center/...
Island ant communities show signs of ‘insect apocalypse’
79% of endemic species show signs of decline, highlighting the vulnerability of island biodiversity to ecosystem changes.
www.oist.jp
September 12, 2025 at 5:54 AM
Out now in @science.org, OIST researchers and collaborators find 79% of endemic ant species in Fiji in decline, highlighting the vulnerability of island biodiversity to ecosystem changes: www.oist.jp/news-center/...
OIST is hiring Open-Rank Faculty!!
This call is open to several fields, including Ecology, Environmental Science, and Earth Science🌏🌳🐦🐟🐝🦠
Come be part of a truly diverse and inspiring community!!
This call is open to several fields, including Ecology, Environmental Science, and Earth Science🌏🌳🐦🐟🐝🦠
Come be part of a truly diverse and inspiring community!!
📢 #FacultyHiring: OIST is hiring! We invite exceptional scientists to apply for faculty positions in:
- Ecology, Environmental Science, Earth Science, and Oceanography
- Physics and Quantum Science (including related fields)
🔗: www.oist.jp/careers/facu...
- Ecology, Environmental Science, Earth Science, and Oceanography
- Physics and Quantum Science (including related fields)
🔗: www.oist.jp/careers/facu...
August 20, 2025 at 1:50 PM
OIST is hiring Open-Rank Faculty!!
This call is open to several fields, including Ecology, Environmental Science, and Earth Science🌏🌳🐦🐟🐝🦠
Come be part of a truly diverse and inspiring community!!
This call is open to several fields, including Ecology, Environmental Science, and Earth Science🌏🌳🐦🐟🐝🦠
Come be part of a truly diverse and inspiring community!!
Reposted by Chikae Tatsumi
Such a fun project & massive team effort. We sampled tree cores my 1st yr of grad school then took a year to figure out how to grind wood… ! But we were amazed to find such a complex & unexpected ecosystem inside trees. And we’ve just scratched the surface! We explored 150 trees— 3 trillion to go!
#NatMicroPicks
Hidden microbial world in trees🌳
Living wood hosts trillions of bacteria making trees a complex ecosystems with major roles in forest health and function.
#PlantMicro #MicroSky
www.nature.com/articles/s41...
Hidden microbial world in trees🌳
Living wood hosts trillions of bacteria making trees a complex ecosystems with major roles in forest health and function.
#PlantMicro #MicroSky
www.nature.com/articles/s41...
A diverse and distinct microbiome inside living trees - Nature
Microbiome analyses of living trees show that a single tree can host approximately one trillion bacteria, with microbial communities distinctly partitioned between heartwood and sapwood and with minim...
www.nature.com
August 10, 2025 at 12:23 PM
Such a fun project & massive team effort. We sampled tree cores my 1st yr of grad school then took a year to figure out how to grind wood… ! But we were amazed to find such a complex & unexpected ecosystem inside trees. And we’ve just scratched the surface! We explored 150 trees— 3 trillion to go!
Reposted by Chikae Tatsumi
Assistant Professor position in Traditional Ecological Knowledge at Stanford University. Applications due Sept 30, 2025
facultypositions.stanford.edu/en-us/job/49...
facultypositions.stanford.edu/en-us/job/49...
Stanford | Faculty Positions: Details - Assistant Professor in Traditional Ecological Knowledge
facultypositions.stanford.edu
August 6, 2025 at 7:47 PM
Assistant Professor position in Traditional Ecological Knowledge at Stanford University. Applications due Sept 30, 2025
facultypositions.stanford.edu/en-us/job/49...
facultypositions.stanford.edu/en-us/job/49...
Reposted by Chikae Tatsumi
Nature research paper: Global hotspots of mycorrhizal fungal richness are poorly protected
go.nature.com/4kSD0PO
go.nature.com/4kSD0PO
Global hotspots of mycorrhizal fungal richness are poorly protected - Nature
Machine-learning algorithms trained on 25,000 geolocated soil samples are used to create high-resolution global maps of mycorrhizal fungi, revealing that less than 10% of their biodiversity hotspots are in protected areas.
go.nature.com
July 23, 2025 at 5:07 PM
Nature research paper: Global hotspots of mycorrhizal fungal richness are poorly protected
go.nature.com/4kSD0PO
go.nature.com/4kSD0PO
Reposted by Chikae Tatsumi
Paper now out in Science Advances — “Soil carbon formation is promoted by saturation deficit and existing mineral-associated carbon, not by microbial carbon-use efficiency”
with Noah Sokol
science.org/doi/epdf/10....
with Noah Sokol
science.org/doi/epdf/10....
June 13, 2025 at 8:06 PM
Paper now out in Science Advances — “Soil carbon formation is promoted by saturation deficit and existing mineral-associated carbon, not by microbial carbon-use efficiency”
with Noah Sokol
science.org/doi/epdf/10....
with Noah Sokol
science.org/doi/epdf/10....
Reposted by Chikae Tatsumi
#Fungi are often classed according to their feeding habits as either feeding on decaying material, like wood, or living in mycorrhizal association with plants.
Francis Martin and Hao Tan reveal that we need to think about this dichotomy as a continuum. www.cell.com/current-biol...
Francis Martin and Hao Tan reveal that we need to think about this dichotomy as a continuum. www.cell.com/current-biol...
Saprotrophy-to-symbiosis continuum in fungi
Fungi exhibit diverse ecological functions. Martin and Tan describe and trace the
evolution of saprotrophy and symbiosis in fungi, showing that fungi in nature occupy
a continuum between these nutriti...
www.cell.com
June 12, 2025 at 3:08 PM
#Fungi are often classed according to their feeding habits as either feeding on decaying material, like wood, or living in mycorrhizal association with plants.
Francis Martin and Hao Tan reveal that we need to think about this dichotomy as a continuum. www.cell.com/current-biol...
Francis Martin and Hao Tan reveal that we need to think about this dichotomy as a continuum. www.cell.com/current-biol...
Reposted by Chikae Tatsumi
We are recruiting a tenure-track assistant professor in molecular microbiology in our department in Lausanne! Do consider appyling!!
Come join us in beautiful Lausanne! Deadline for applications: August 10th, 2025
wwwfbm.unil.ch/releve/appli...
wwwfbm.unil.ch/releve/appli...
June 12, 2025 at 12:45 PM
We are recruiting a tenure-track assistant professor in molecular microbiology in our department in Lausanne! Do consider appyling!!
Reposted by Chikae Tatsumi
June 11, 2025 at 11:25 PM
Reposted by Chikae Tatsumi
For students accepted or enrolled in the US: 5 days left to apply for our special admissions deadline (June 15th)! #PhDProgram
The OIST Graduate School has opened a Special PhD Admissions Portal for students currently enrolled in, or accepted to, universities in the U.S. #PhDProgram www.oist.jp/admissions/s...
Special Application Deadline for Students Accepted or Studying in the United States
www.oist.jp
June 11, 2025 at 1:40 AM
For students accepted or enrolled in the US: 5 days left to apply for our special admissions deadline (June 15th)! #PhDProgram
Reposted by Chikae Tatsumi
Nice overview—‘The biogeography and conservation of Earth’s ‘dark’ ectomycorrhizal fungi’ in Current Biology www.cell.com/current-biol...
The biogeography and conservation of Earth’s ‘dark’ ectomycorrhizal fungi
In this review, van Galen et al. use global soil metabarcoding databases to evaluate
current estimates of the total number of ectomycorrhizal (EcM) fungal species on Earth,
outline the current state o...
www.cell.com
June 9, 2025 at 7:30 PM
Nice overview—‘The biogeography and conservation of Earth’s ‘dark’ ectomycorrhizal fungi’ in Current Biology www.cell.com/current-biol...
Reposted by Chikae Tatsumi
OIST Graduate School has opened a Special Admissions Portal for students currently enrolled in, or accepted to, universities in the United States. The application deadline is June 15, 2025.
www.oist.jp/admissions
www.oist.jp/admissions
Admissions
www.oist.jp
June 2, 2025 at 10:36 AM
OIST Graduate School has opened a Special Admissions Portal for students currently enrolled in, or accepted to, universities in the United States. The application deadline is June 15, 2025.
www.oist.jp/admissions
www.oist.jp/admissions
Two weeks left to apply! Just a note — the start date is negotiable. Feel free to reach out if you have any questions!😊
ご質問などあればお気軽にお問い合わせください！
ご質問などあればお気軽にお問い合わせください！
Our unit at OIST is hiring two postdocs, one lab manager/technician, and one field technician! If you're passionate about exploring microbial and ecosystem ecology at the international institute on Japan's beautiful island, please apply by April 20! 🍄🦠🌳🌞
www.oist.jp/research/res...
www.oist.jp/research/res...
April 4, 2025 at 2:32 PM
Two weeks left to apply! Just a note — the start date is negotiable. Feel free to reach out if you have any questions!😊
ご質問などあればお気軽にお問い合わせください！
ご質問などあればお気軽にお問い合わせください！
Reposted by Chikae Tatsumi
Blue skies over OIST.
Follow us for the latest in interdisciplinary science and innovation, from curiosity-driven research to applied technology.
#SciSky 🧪
Follow us for the latest in interdisciplinary science and innovation, from curiosity-driven research to applied technology.
#SciSky 🧪
March 31, 2025 at 2:59 AM
Blue skies over OIST.
Follow us for the latest in interdisciplinary science and innovation, from curiosity-driven research to applied technology.
#SciSky 🧪
Follow us for the latest in interdisciplinary science and innovation, from curiosity-driven research to applied technology.
#SciSky 🧪
Our unit at OIST is hiring two postdocs, one lab manager/technician, and one field technician! If you're passionate about exploring microbial and ecosystem ecology at the international institute on Japan's beautiful island, please apply by April 20! 🍄🦠🌳🌞
www.oist.jp/research/res...
www.oist.jp/research/res...
March 10, 2025 at 12:51 PM
Our unit at OIST is hiring two postdocs, one lab manager/technician, and one field technician! If you're passionate about exploring microbial and ecosystem ecology at the international institute on Japan's beautiful island, please apply by April 20! 🍄🦠🌳🌞
www.oist.jp/research/res...
www.oist.jp/research/res...