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Michael Prigge

@mjprigge

Plant biologist at UCSD (how auxin regulates transcription across land plants, from receptors to pol II and the steps in between). Mostly, moss⬌Arabidopsis. Grew up in Minnesota, attended/worked at UMinn, UO, UM, and IU.

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Latest posts by Michael Prigge @mjprigge

I cold-emailed Ralph as a second-year grad student: I wanted to work on moss but had no idea what I was doing. He invited me to spend weeks in his lab, joined my committee, and supported me throughout my PhD - my thesis project would 100% not have been possible without his generosity and kindness

09.03.2026 05:52 👍 6 🔁 1 💬 0 📌 0

Ralph was incredibly generous when I wanted to start working on moss. He invited me to visit his lab for a day and talk to/shadow people in his lab.

09.03.2026 05:40 👍 9 🔁 2 💬 0 📌 0

Tuned in to the Czechia v Korea baseball game from the Tokyodome, and saw a UCSD grad hit a home run.

05.03.2026 11:28 👍 1 🔁 0 💬 0 📌 0

1/ ✨ New preprint alert ✨

It is my pleasure to share:
"Stepwise evolution of the developmental and symbiotic functions of DELLA in land plants"

Here we investigated the role of the single GRAS transcription factor DELLA in #MyMarchantia

doi.org/10.64898/202...

#PlantScience
A thread...

04.03.2026 05:20 👍 48 🔁 36 💬 5 📌 2

This is over a week old

03.03.2026 20:08 👍 0 🔁 0 💬 0 📌 0

One of THE BEST rhododendron songs, in my opinion, and this live version is - chefs kiss 😘 - outta sight!

The lyrics speak to the big mysteries of rhododendron and give a sense as to why the plants have been so special to humans for millennia

Im delighted they chose it for their live album!

03.03.2026 11:54 👍 4 🔁 2 💬 0 📌 0

How should I keep spores of Marchantia polymorpha subsp. ruderalis? Although I have kept them at -30˚C for 1-2 months, they don't germinate so far.

02.03.2026 08:00 👍 3 🔁 2 💬 2 📌 0

No, I haven’t checked

28.02.2026 19:15 👍 1 🔁 0 💬 0 📌 0

One of its columns seems to bind the pigmented poly-something of moss fairly irreversibly. Last time, I got nervous and added an extra 1/5-volume wash before eluting. With that, I got all 48 samples’ 260/280 ratios 2.17 ±0.02 and 260/230 ratios 2.38±0.03. (That’s the full range, not SE.)

28.02.2026 09:01 👍 1 🔁 0 💬 1 📌 0

I have a hunch it would work. The only time I tried was when I purified RNA from a combined sample with half gametophores and half protonemata. (I needed to RT-PCR/clone some 6-7.5 kb cDNAs and wanted a mix of cell types.)

28.02.2026 09:01 👍 1 🔁 0 💬 1 📌 0

I like Zymo’s plant RNA kit because it’s set up for bead beaters. All 48 preps’ abs ratios were within 2% last time, if I remember correctly. (We generally use treated/untreated protonemata, not gametophores though)

27.02.2026 18:50 👍 2 🔁 0 💬 1 📌 0

Would it really be a superior deal if it triggers a mass exodus of HBO subscribers? The only show I'd really miss would be John Oliver's, and I can't see it being allowed to continue as is with those owners.

27.02.2026 00:20 👍 3 🔁 0 💬 1 📌 0

After some introspection, perhaps my negative feelings arose after I was fooled by it right as I started thinking that maybe I could consider myself a botanist.

27.02.2026 00:03 👍 3 🔁 0 💬 1 📌 0

Thanks for this. I always thought of them negatively, as Zamia cosplayers.
Our lab has one that was handed from person to person for ~15 years. Now, I'm the only person left in the lab, and I don't want it. I remember to water it every month or so and it refuses to wilt. (Anyone want it?)

26.02.2026 23:32 👍 5 🔁 0 💬 1 📌 0
Preview
Functional characterisation of Target of Rapamycin (TOR) signalling in Physcomitrella - Plant Cell Reports Key message The evolutionary conserved TOR kinase positively controls growth and development of the moss Physcomitrella, development and function of its chloroplasts, its protein synthesis, and cell-c...

Please check out:
Functional characterisation of Target of Rapamycin (TOR) signalling in #Physcomitrella
We found a remarkable evolutionary conservation of this central #signalling hub, but also specific differences, esp. in RAPTOR.
link.springer.com/article/10.1...

26.02.2026 09:51 👍 14 🔁 7 💬 0 📌 0
Preview
tRNA-based polycistronic CRISPR/Cas9 system boosts efficiency of multi-gene deletion in the moss Physcomitrella - Plant Methods CRISPR/Cas9-based genome editing in the model bryophyte Physcomitrium patens (commonly known as Physcomitrella) is widely used for gene knockout via small insertions or deletions (indels). In this stu...

Great method development!
tRNA-based polycistronic CRISPR/Cas9 system boosts efficiency of multi-gene deletion in the #moss #Physcomitrella
link.springer.com/article/10.1...

23.02.2026 09:43 👍 6 🔁 2 💬 0 📌 0
Post image

Delighted to share our new preprint: "Evolution of moss leaf-like organs through variations in deeply conserved developmental principles."
Led by Ph.D. student Wenye Lin from my lab @irbv.bsky.social ,
in collab. with Yoan Coudert (ENS Lyon) and Richard Smith (JIC).
www.biorxiv.org/content/10.6...

20.02.2026 12:40 👍 66 🔁 35 💬 3 📌 3
Preview
Evolution and development: What makes a merry stem? From tiny mosses to giant redwoods, around 450,000 species of land plants show a huge variety of forms, yet all land plants develop from stem cells in proliferative meristems. What makes a meristem? T...

Insightful new papers on #auxin, brilliantly compiled by @jillharrison.bsky.social.
Evolution and development: What makes a merry stem?
www.cell.com/current-biol...

03.02.2026 08:45 👍 17 🔁 5 💬 1 📌 0

My great-great-great grandpa met a woman in Chicago when his German ship was being repaired in NY (after running ammo to Union troops during the Civil War). He visited her 3 years later ... and met his daughter. The FIL with his shotgun is not visible in their wedding photo.

03.02.2026 03:30 👍 1 🔁 0 💬 0 📌 0
Figure 1

Figure 1

Cytokinin signaling mediated by KMD2 promotes Arabidopsis hypocotyl grafting success #micropublication #biology #data #caltechlibrary #Arabidopsis #Methods #UndergraduateResearchExperience #NewFinding https://micropublication.org/journals/biology/micropub-biology-001768

03.02.2026 00:58 👍 6 🔁 2 💬 0 📌 0

I’d seen it several times from different angles before I realized she went after him

28.01.2026 09:53 👍 0 🔁 0 💬 0 📌 0

Unfortunately, I believe the baseball Minnesota Twins were the most glaring absence from the statement condemning the violence after the latest killing.

27.01.2026 20:11 👍 0 🔁 0 💬 0 📌 0

Not sure how I missed your question. Retrogen offered it, but today announced that they have shut down operations. After a decade, we need to find a new company for Sanger sequencing.

27.01.2026 06:50 👍 1 🔁 0 💬 1 📌 0

Probably this bsky.app/profile/bbko...

26.01.2026 22:06 👍 0 🔁 0 💬 0 📌 0
Characterization of Physcomitium patens Ppb-gata mutant phenotypes.

Characterization of Physcomitium patens Ppb-gata mutant phenotypes.

B‐GATA factors are required for nitrogen‐responsive growth in Physcomitrium patens and Arabidopsis thaliana

Zappone et al.

nph.onlinelibrary.wiley.com/doi/10.1111/...

13.01.2026 05:19 👍 8 🔁 2 💬 0 📌 1

Hmmm, in the same week one company posted their fastest turnaround on my whole-plasmid sequencing (4h 33m), a local company started offering it for one-third their price ($4.99/plasmid ≤10kb).

11.01.2026 20:16 👍 0 🔁 0 💬 1 📌 0
Preview
An in planta single-cell screen to accelerate functional genetics Genetic screens in whole plants are a powerful tool for functional genetics. However, elucidating gene function in highly redundant genetic programs such as signaling pathways remains challenging in b...

An in planta single-cell screen to accelerate functional genetics--very cool application of the TMV vector pTRBO by Elizabeth Sattely’s Lab 😎
www.biorxiv.org/content/10.1...

11.01.2026 12:51 👍 19 🔁 11 💬 0 📌 1

Great project and super nice working environment 👇

11.01.2026 08:03 👍 5 🔁 5 💬 0 📌 0
Post image
08.01.2026 20:30 👍 13876 🔁 5786 💬 153 📌 172
View of US Bank Stadium from the Minnesota Viking’s end zone at the end of the third quarter

View of US Bank Stadium from the Minnesota Viking’s end zone at the end of the third quarter

Made it to my second NFL game

04.01.2026 20:09 👍 4 🔁 0 💬 0 📌 0