Allison Hansen
@hansenlab.bsky.social
Associate professor, University of California, Riverside
Insect-microbe interactions, evolutionary biology
Insect-microbe interactions, evolutionary biology
Reposted by Allison Hansen
We have a new one out!
Six, D.L., Alverson, H. & Bullington, L. Ecological stoichiometry of mountain pine beetle, its mutualist fungi, and the disease white pine blister rust in whitebark pine. Oecologia 207, 176 (2025). doi.org/10.1007/s004...
Six, D.L., Alverson, H. & Bullington, L. Ecological stoichiometry of mountain pine beetle, its mutualist fungi, and the disease white pine blister rust in whitebark pine. Oecologia 207, 176 (2025). doi.org/10.1007/s004...
Ecological stoichiometry of mountain pine beetle, its mutualist fungi, and the disease white pine blister rust in whitebark pine - Oecologia
Ecological stoichiometry can help clarify how symbionts and other co-occurring organisms mediate nutrient deficiencies for hosts. We used ecological stoichiometry (comparisons of elemental composition...
doi.org
October 18, 2025 at 8:54 PM
We have a new one out!
Six, D.L., Alverson, H. & Bullington, L. Ecological stoichiometry of mountain pine beetle, its mutualist fungi, and the disease white pine blister rust in whitebark pine. Oecologia 207, 176 (2025). doi.org/10.1007/s004...
Six, D.L., Alverson, H. & Bullington, L. Ecological stoichiometry of mountain pine beetle, its mutualist fungi, and the disease white pine blister rust in whitebark pine. Oecologia 207, 176 (2025). doi.org/10.1007/s004...
Reposted by Allison Hansen
From beginning to end: the synecology of tree‐killing bark beetles, fungi, and trees - Six - Biological Reviews - Wiley Online Library 😁WE HAVE A NEW ONE OUT. Two years in the making. Give it a look!
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
From beginning to end: the synecology of tree‐killing bark beetles, fungi, and trees
Over a century of research has revealed an amazing complexity of behaviours and physiological adaptations that allow tiny bark beetles to overcome large trees, sometimes resulting in outbreaks that k...
onlinelibrary.wiley.com
October 7, 2025 at 1:59 PM
From beginning to end: the synecology of tree‐killing bark beetles, fungi, and trees - Six - Biological Reviews - Wiley Online Library 😁WE HAVE A NEW ONE OUT. Two years in the making. Give it a look!
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Super fun collaboration with Diana Percy and Patrick Degnan.
#symbiosis #genome evolution #psyllids #Bvitamins
#symbiosis #genome evolution #psyllids #Bvitamins
@hansenlab.bsky.social et al. study the evolution of bacterial symbionts of Pariaconus psyllids in Hawaii, demonstrating that island biogeography and host plant ecology shape symbiont losses and codiversification patterns.
🔗 doi.org/10.1093/gbe/evaf153
#genome #evolution #symbiont
🔗 doi.org/10.1093/gbe/evaf153
#genome #evolution #symbiont
August 22, 2025 at 5:57 PM
Super fun collaboration with Diana Percy and Patrick Degnan.
#symbiosis #genome evolution #psyllids #Bvitamins
#symbiosis #genome evolution #psyllids #Bvitamins
Reposted by Allison Hansen
@haraipapilio.bsky.social paper on evolution of Wolbachia MK mechanism through prophage acquisition in molina butterflies - avoiding suppression by the host. Now out! #symbiosky www.sciencedirect.com/science/arti.... With @daisukekageyama.bsky.social @bolinabug.bsky.social and others
Evolution of Wolbachia male-killing mechanism within a host species
Male-killing bacterial symbionts, prevalent in arthropods, skew population sex ratios by selectively killing male progeny, profoundly impacting ecolog…
www.sciencedirect.com
April 9, 2025 at 3:45 PM
@haraipapilio.bsky.social paper on evolution of Wolbachia MK mechanism through prophage acquisition in molina butterflies - avoiding suppression by the host. Now out! #symbiosky www.sciencedirect.com/science/arti.... With @daisukekageyama.bsky.social @bolinabug.bsky.social and others
Reposted by Allison Hansen
I know this is a weird time to ask, but are there post doc positions in symbiosis available in the next year? I know a talented microscopy/microbiology student who is going to be on the job market soon. Open to work outside the US, but is an American student if that makes a difference🧪🦠
March 14, 2025 at 9:07 PM
I know this is a weird time to ask, but are there post doc positions in symbiosis available in the next year? I know a talented microscopy/microbiology student who is going to be on the job market soon. Open to work outside the US, but is an American student if that makes a difference🧪🦠
New study from my lab and former grad Dr. Kwak shows Liberibacter psyllaurous, a dual insect symbiont and plant pathogen, boosts psyllid fitness by providing essential nutrients like arginine. A rare case of nutritional benefits from non-obligate symbionts #symbiosis journals.asm.org/doi/10.1128/...
A dual insect symbiont and plant pathogen improves insect host fitness under arginine limitation | mBio
Unlike obligate symbionts that are permanently associated with their hosts, facultative
symbionts rarely show direct nutritional contributions, especially under nutrient-limited
conditions. This study...
journals.asm.org
February 26, 2025 at 4:40 PM
New study from my lab and former grad Dr. Kwak shows Liberibacter psyllaurous, a dual insect symbiont and plant pathogen, boosts psyllid fitness by providing essential nutrients like arginine. A rare case of nutritional benefits from non-obligate symbionts #symbiosis journals.asm.org/doi/10.1128/...
Reposted by Allison Hansen
Base-modified nucleotides mediate immune signaling in bacteria www.science.org/doi/abs/10.1... #jcampubs
Base-modified nucleotides mediate immune signaling in bacteria
Signaling from pathogen sensing to effector activation is a fundamental principle of cellular immunity. While cyclic (oligo)nucleotides have emerged as key signaling molecules, the existence of other ...
www.science.org
February 21, 2025 at 12:58 AM
Base-modified nucleotides mediate immune signaling in bacteria www.science.org/doi/abs/10.1... #jcampubs
Reposted by Allison Hansen
We're searching for a postdoc to study insect-microbe symbiosis in our lab at UNC Chapel Hill. Application can be found here: unc.peopleadmin.com/postings/295...
Post-Doc Research Associate
The researcher will be primarily responsible for carrying out experiments and aims of a recently funded NIH award, using an insect model system (aphids) to address mechanistic and evolutionary genetic...
unc.peopleadmin.com
February 17, 2025 at 9:51 PM
We're searching for a postdoc to study insect-microbe symbiosis in our lab at UNC Chapel Hill. Application can be found here: unc.peopleadmin.com/postings/295...
Reposted by Allison Hansen
Applications are now open for fully-funded #PhD positions at the Max Planck Institute for Biology and Friedrich Miescher Laboratory. The new cohort starts September 2025.
Find out more about the projects you could be working on: www.phd.tuebingen.mpg.de
#IMPRS
Find out more about the projects you could be working on: www.phd.tuebingen.mpg.de
#IMPRS
December 2, 2024 at 9:03 AM
Applications are now open for fully-funded #PhD positions at the Max Planck Institute for Biology and Friedrich Miescher Laboratory. The new cohort starts September 2025.
Find out more about the projects you could be working on: www.phd.tuebingen.mpg.de
#IMPRS
Find out more about the projects you could be working on: www.phd.tuebingen.mpg.de
#IMPRS
Reposted by Allison Hansen
Are you or do you know someone interested in symbiosis research? Anaeramoeba is an exciting organism to explore symbiosis in a low-oxygen environment.
Less than a week (December 6) to apply for the PhD position in my group!
uu.varbi.com/en/what:job/...
Please share widely!
Less than a week (December 6) to apply for the PhD position in my group!
uu.varbi.com/en/what:job/...
Please share widely!
December 2, 2024 at 12:30 PM
Are you or do you know someone interested in symbiosis research? Anaeramoeba is an exciting organism to explore symbiosis in a low-oxygen environment.
Less than a week (December 6) to apply for the PhD position in my group!
uu.varbi.com/en/what:job/...
Please share widely!
Less than a week (December 6) to apply for the PhD position in my group!
uu.varbi.com/en/what:job/...
Please share widely!
Reposted by Allison Hansen
Still some time to apply. Please share the ad.
There’s an open postdoc position in our EIC funded project FIBRE-MATCH at the University of Helsinki, Finland. Further information in the ad.
jobs.helsinki.fi/job-invite/3...
jobs.helsinki.fi/job-invite/3...
Postdoctoral Researcher in Bioinformatics of the Human Gut Microbiome
Postdoctoral Researcher in Bioinformatics of the Human Gut Microbiome
jobs.helsinki.fi
December 2, 2024 at 12:31 PM
Still some time to apply. Please share the ad.
Reposted by Allison Hansen
The Department of Pathology at UC San Diego is hiring a new Department Chair!
We are comprised of basic, translational, and physician scientists working on cancer, neurological disease, microbial infection, and inflammatory disease. Please share & repost! 🧪 apol-recruit.ucsd.edu/JPF03983
We are comprised of basic, translational, and physician scientists working on cancer, neurological disease, microbial infection, and inflammatory disease. Please share & repost! 🧪 apol-recruit.ucsd.edu/JPF03983
Department of Pathology, Chair
University of California, San Diego is hiring. Apply now!
apol-recruit.ucsd.edu
December 2, 2024 at 5:57 PM
The Department of Pathology at UC San Diego is hiring a new Department Chair!
We are comprised of basic, translational, and physician scientists working on cancer, neurological disease, microbial infection, and inflammatory disease. Please share & repost! 🧪 apol-recruit.ucsd.edu/JPF03983
We are comprised of basic, translational, and physician scientists working on cancer, neurological disease, microbial infection, and inflammatory disease. Please share & repost! 🧪 apol-recruit.ucsd.edu/JPF03983
Reposted by Allison Hansen
Fun new paper led by @greghurst.bsky.social &co using genomics to show that facultative symbiont genomes get bigger as they adapt to life inside a host (through HGT & loss of CRISPR) before undergoing genome reduction as they become obligate #symbiosky #microsky
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Genome dynamics across the evolutionary transition to endosymbiosis
Endosymbiosis—where a microbe lives and replicates within a host—is an important contributor to organismal function that has accelerated evolutionary …
www.sciencedirect.com
November 15, 2024 at 3:46 PM
Fun new paper led by @greghurst.bsky.social &co using genomics to show that facultative symbiont genomes get bigger as they adapt to life inside a host (through HGT & loss of CRISPR) before undergoing genome reduction as they become obligate #symbiosky #microsky
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Allison Hansen
Post doc position of possible interest at UC Davis:
ohi.vetmed.ucdavis.edu/careers
On "ecological and environmental drivers of zoonotic virus emergence, transmission and circulation and the development of innovative technology and approaches for transdisciplinary pandemic research."
ohi.vetmed.ucdavis.edu/careers
On "ecological and environmental drivers of zoonotic virus emergence, transmission and circulation and the development of innovative technology and approaches for transdisciplinary pandemic research."
Careers
Postdoctoral ResearcherSalary Range: $67,000-$79,000 USD per yearLocation: Onsite, UC DavisApplication Deadline: November 29, 2024
ohi.vetmed.ucdavis.edu
November 14, 2024 at 1:53 AM
Post doc position of possible interest at UC Davis:
ohi.vetmed.ucdavis.edu/careers
On "ecological and environmental drivers of zoonotic virus emergence, transmission and circulation and the development of innovative technology and approaches for transdisciplinary pandemic research."
ohi.vetmed.ucdavis.edu/careers
On "ecological and environmental drivers of zoonotic virus emergence, transmission and circulation and the development of innovative technology and approaches for transdisciplinary pandemic research."
Reposted by Allison Hansen
Applications are open for the Microbial Population Biology GRS and GRC!
The GRS is a fun day for grad students and postdocs to network before the full GRC starts, and is co-chaired this year by me and Laura Suttenfield
Get your applications in by Jan 15! #evosky 🦠🧪
www.grc.org/microbial-po...
The GRS is a fun day for grad students and postdocs to network before the full GRC starts, and is co-chaired this year by me and Laura Suttenfield
Get your applications in by Jan 15! #evosky 🦠🧪
www.grc.org/microbial-po...
2025 Microbial Population Biology (GRS) Seminar GRC
The 2025 Gordon Research Seminar on Microbial Population Biology (GRS) will be held in Andover, New Hampshire. Apply today to reserve your spot.
www.grc.org
November 14, 2024 at 8:02 AM
Applications are open for the Microbial Population Biology GRS and GRC!
The GRS is a fun day for grad students and postdocs to network before the full GRC starts, and is co-chaired this year by me and Laura Suttenfield
Get your applications in by Jan 15! #evosky 🦠🧪
www.grc.org/microbial-po...
The GRS is a fun day for grad students and postdocs to network before the full GRC starts, and is co-chaired this year by me and Laura Suttenfield
Get your applications in by Jan 15! #evosky 🦠🧪
www.grc.org/microbial-po...