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Joel Sachs @sachslab.bsky.social · 29/04/2026

especially her husband, Dr. Jovani Catalan Dibene, and her two young children. With deepest sympathy, Joel L. Sachs Professor & Chair, Evolution Ecology & Organismal Biology

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Joel Sachs @sachslab.bsky.social · 29/04/2026

The EEOB Department is heartbroken by the sudden and unexpected loss of our colleague and friend, Adriana. We extend our deepest condolences to Dr. Romero Olivares’ family, friends, colleagues, and all who knew her,

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Joel Sachs @sachslab.bsky.social · 29/04/2026

before coming to UCR. Adriana grew up in Mexico in a town known for growing oranges. The baseball team there is called the "Naranjeros" (roughly translating to "orange growers"), so she said that it felt like it was meant to be to settle in Riverside.

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Joel Sachs @sachslab.bsky.social · 29/04/2026

Dr. Romero Olivares received both her Bachelors and Masters from Universidad Autónoma de Baja California. She then came to UC Irvine for her Ph.D. After multiple postdoc appointments, she landed a job at New Mexico State University in Las Cruces, where she stayed for five years

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Joel Sachs @sachslab.bsky.social · 29/04/2026

A core goal of her research was to study desert fungi to help us plan and mitigate the effects of global warming. At heart, Adriana was a soil microbiologist, and her research explored how fungi respond and adapt to a changing environment.

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Joel Sachs @sachslab.bsky.social · 29/04/2026

Adriana was well known and appreciated for her kind and generous nature, her hard and public advocacy to enhance equal access in higher education, and her immense excitement to study fungi in natural habitats, especially the deserts of the American Southwest.

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Joel Sachs @sachslab.bsky.social · 29/04/2026

Adriana joined UCR on January 1, 2026, and was just starting up her research and teaching here. Although her career was cut short, Dr. Romero Olivares had a huge impact on her field of microbial ecology and on the many students and researchers that she touched.

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Joel Sachs @sachslab.bsky.social · 29/04/2026

Dear Colleagues, It is with immense sadness and shock that I share the passing of Dr. Adriana Romero Olivares, a brand-new Assistant Professor in the Department of Evolution, Ecology, and Organismal Biology at UC Riverside. www.mealtrain.com/trains/l3kg64

mealtrain.com

Meal Train for Jovani Catalan (Spouse of Adriana Romero Olivares)

Hi all, Please help out the family of Adriana Romero Olivares. Her husband, Jovani, and kids can be helped with meals over the next weeks as Adriana recovers.

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Joel Sachs @sachslab.bsky.social · 13/03/2026

Deadline this weekend. We still have a few open spots!!

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Joel Sachs @sachslab.bsky.social · 05/03/2026

See the AMAZING John McCutcheon give the Keynote address (mccutcheonlab.org). It promises to be a great meeting!

mccutcheonlab.org

McCutcheon Lab | Evolutionary Cell Biology & Symbiosis

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Joel Sachs @sachslab.bsky.social · 05/03/2026

Deadline soon! Registration is now FREE for graduate students and postdocs for the 14th Annual Yosemite Symbiosis workshop. THANKS to the Gordon and Betty Moore Foundation! Space is limited. Learn more and REGISTER here snri.ucmerced.edu/form/symbios... We've upgraded to a new conference location!

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Joel Sachs @sachslab.bsky.social · 08/02/2026

NEW: Registration is now FREE for graduate students and postdocs for the 14th Annual Yosemite Symbiosis workshop. THANKS to the Gordon and Betty Moore Foundation! Space is limited. Learn more and REGISTER here: snri.ucmerced.edu/form/symbios...

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Joel Sachs @sachslab.bsky.social · 21/04/2025

The 13th annual Yosemite Symbiosis workshop is a wrap! We had fantastic talks, amazing weather, and so much new science! Thanks for coming y’all and thanks to Britt Koskella for her amazing keynote! @bkoskella.bsky.social

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Joel Sachs @sachslab.bsky.social · 21/04/2025

@bkoskella.bsky.social did a TOUR DE FORCE talk about some of the big questions in symbiosis at the Yosemite Symbiosis Workshop. We all learned a lot and are feeling inspired. Thanks for your leadership Britt!

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Reposted by Joel Sachs

Joel Sachs @sachslab.bsky.social · 30/01/2025

Please repost! and Save the date for the 13th Annual Yosemite Symbiosis Workshop (April 18-20, 2025). More info at the registration page. REGISTRATION WILL OPEN SOON www.sachslab.com/symbiosis-20...

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Joel Sachs @sachslab.bsky.social · 10/03/2025

Variation in symbiont fitness during co-inoculations did not measurably affect plant performance, suggesting that predicted conflict over the joint phenotype of rhizobia fitness has negligible effect on the host.

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Joel Sachs @sachslab.bsky.social · 10/03/2025

However, ineffective strains exhibited genotypic variation in their fitness in nodules within individual nodules co-infected with a beneficial strain, suggesting a role for symbiont competitiveness in shaping this joint phenotype.

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Joel Sachs @sachslab.bsky.social · 10/03/2025

In mixed infections, ineffective strains always had lower relative fitness in nodules compared to beneficial strains, consistent with efficient punishment of non-fixing rhizobia.

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Joel Sachs @sachslab.bsky.social · 10/03/2025

We co-inoculated four A. strigosus plant lines with nine combinations of effective and ineffective Bradyrhizobium strains and measured the relative fitness of ineffective strains within individual nodules, as hosts must select against uncooperative symbionts to maintain benefits.

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Joel Sachs @sachslab.bsky.social · 10/03/2025

Really Excited to get this great work out from Camille Wendlandt and others. #editorschoice @jevbio.bsky.social‬ doi.org/10.1093/jeb/... We studied associations between Acmispon strigosus, an annual legume native to California, and its nitrogen-fixing symbionts in the genus Bradyrhizobium.

doi.org

Host control by Acmispon strigosus constrains fitness gains of ineffective Bradyrhizobium symbionts in mixed infections

Abstract. Plant hosts can gain significant growth benefits from symbiosis with microbes, but these benefits could be threatened by divergent fitness intere

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Joel Sachs @sachslab.bsky.social · 10/03/2025

LAST CALL FOR THE YOSEMITE SYMBIOSIS WORKSHOP! APRIL 18-20, YOSEMITE NP Registration is FREE for graduate students and postdocs THANKS to the Gordon and Betty Moore Foundation! JUST A FEW OPEN SPOTS REMAIN Learn more and REGISTER here: snri.ucmerced.edu/form/symbios...

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Joel Sachs @sachslab.bsky.social · 11/02/2025

UPDATE: Registration is now FREE for graduate students and postdocs for the 13th Annual Yosemite Symbiosis workshop. THANKS to the Gordon and Betty Moore Foundation! Space is limited. Learn more and REGISTER here:https://snri.ucmerced.edu/form/symbiosis-workshop-2025

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Joel Sachs @sachslab.bsky.social · 05/02/2025

Please RT: Registration is now open for the 13th Annual Yosemite Symbiosis workshop. Space is limited. Learn more and REGISTER here: snri.ucmerced.edu/form/symbios...

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Reposted by Joel Sachs

Journal of Evolutionary Biology @jevbio.bsky.social · 31/01/2025

To maintain microbial mutualisms, hosts must reward beneficial microbes and punish cheaters. We show that sanctions of uncooperative rhizobia – are maintained irrespective of host or symbiont genotype academic.oup.com/jeb/advance-... @sachslab.bsky.social

academic.oup.com

Host control by Acmispon strigosus constrains fitness gains of ineffective Bradyrhizobium symbionts in mixed infections

Abstract. Plant hosts can gain significant growth benefits from symbiosis with microbes, but these benefits could be threatened by divergent fitness intere

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Joel Sachs @sachslab.bsky.social · 30/01/2025

Please repost! and Save the date for the 13th Annual Yosemite Symbiosis Workshop (April 18-20, 2025). More info at the registration page. REGISTRATION WILL OPEN SOON www.sachslab.com/symbiosis-20...

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Reposted by Joel Sachs

Marko Spasojevic @m-j-spasojevic.bsky.social · 16/12/2024

New camera trap footage incoming!!

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Joel Sachs @sachslab.bsky.social · 22/11/2024

Joshua Tree National Park will be hiring a biologist to manage vegetation programs. It is a project management and supervision focused position with a lot of potential to make an impact. www.usajobs.gov/GetJob/ViewD....

usajobs.gov

Biologist

This position is located in Joshua Tree National Park, in the Science and Resources Division.<br> <br>

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Reposted by Joel Sachs

Evelien Adriaenssens @evelienadri.bsky.social · 15/11/2024

Please share: I'm looking for a #phage enthusiast PhD student to join my team on a funded project part of the Norwich Research Park DTP. Application deadline 25/11. biodtp.norwichresearchpark.ac.uk/projects/bac... CC: @quadraminstitute.bsky.social

biodtp.norwichresearchpark.ac.uk

Bacteriophage-based biocontrol of pathogens in the food chain | Doctoral Training Partnership

ADRIAENSSENS_Q25DTP…

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Joel Sachs @sachslab.bsky.social · 09/11/2024

This is hilarious, even if it’s not really true

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Joel Sachs @sachslab.bsky.social · 02/11/2024

Take a look at the job ad. It offers pretty detailed guidance on what would be considered a good fit.

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Joel Sachs @sachslab.bsky.social · 01/11/2024

I'm so excited to announce that my department is now hiring TWO ECOLOGISTS at the Assistant Professor Level. We will be really excited to substantially expand research in ecology in our EEOB Department at UCR. Please Repost and share widely! aprecruit.ucr.edu/JPF01983

aprecruit.ucr.edu

Assistant Professor of Ecology

University of California, Riverside is hiring. Apply now!

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Joel Sachs @sachslab.bsky.social · 21/10/2024

Mt San Gorgonio. A perfect day to hike to the highest peak in SoCal

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Joel Sachs @sachslab.bsky.social · 01/03/2024

Early Registration extended for the 12th annual Yosemite Symbiosis Workshop at the SNRI! April 19-21, 2024 FREE For presenting students and postdocs! KEYNOTE SPEAKER: Kabir Peay, Stanford University mykophile.stanford.edu Registration page: snri.ucmerced.edu/form/symbios... Don't miss the boat!

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Joel Sachs @sachslab.bsky.social · 01/03/2024

We have a few spaces left. Early bird registration has been extended to March 7. Register now before we run out of space for the Yosemite Symbiosis Workshop.

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Joel Sachs @sachslab.bsky.social · 31/01/2024

Please Repost! Registration is OPEN for the 12th annual Yosemite Symbiosis Workshop at the SNRI! April 19-21, 2024 FREE For presenting students and postdocs! KEYNOTE SPEAKER: Kabir Peay, Stanford University mykophile.stanford.edu Registration page: snri.ucmerced.edu/form/symbios...

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Joel Sachs @sachslab.bsky.social · 12/01/2024

Please Repost! Tenure track Assistant Professor position in Disease Ecology in my Department at UCR! This is a great time to join our growing department. Deadline is Jan. 22, so please check it out. aprecruit.ucr.edu/JPF01846

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Joel Sachs @sachslab.bsky.social · 04/12/2023

First post! Join our growing department! We are seeking a Disease Ecologist to join the Department of EEOB at UC Riverside. Please RT! aprecruit.ucr.edu/apply/JPF01846.

aprecruit.ucr.edu

Assistant Professor of Disease Ecology

University of California, Riverside is hiring. Apply now!

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