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Claudio Casola

@ccasola

#BlackLivesMatter Associate Professor, evolutionary genomics @TAMU. views my own. he/him.

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11.11.2024
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Latest posts by Claudio Casola @ccasola

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old lab, new name

27.09.2025 19:50 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

opening BS again since I guess February, wonder how many are still using it

27.09.2025 19:46 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The DAVID server for functional gene annotation at NIH is down

23.03.2025 00:15 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

would it fair to say that Genetics deals with the software and Genomics with the hardware?

05.03.2025 18:00 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
list of banned keywords

list of banned keywords

🚨BREAKING. From a program officer at the National Science Foundation, a list of keywords that can cause a grant to be pulled. I will be sharing screenshots of these keywords along with a decision tree. Please share widely. This is a crisis for academic freedom & science.

04.02.2025 01:26 πŸ‘ 27845 πŸ” 15743 πŸ’¬ 1272 πŸ“Œ 3655

Yet again, logging in to submit a proposal is a fucking ordeal. One agency is particularly bad and we all know what it is

10.01.2025 17:18 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

#beetles #genomes #geneannotation

17.12.2024 18:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Super fun collaborating with @coleoguy.bsky.social, Lynne Rieske and many others on this project!

10/10

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Key take home messages:
1. High-quality new genome of SPB
2. Stevens elements conservation in Dendroctonus
3. Widespread gene losses and gains, role in adapation?
4. Lower gene content in Dendroctonus due to gene losses, fewer new gene families
5. Lots of misannotated genes in other beetles

9/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

But the most surprising finding came from non-Dendroctonus beetles. Many of these genomes contain thousands of genes encoding proteins with transposable element domains (TEs). Further analyses show that these are likely annotation artifacts rather than domesticated TE genes.

8/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Instead, we found that widespread gene loss and a low rate of novel gene families formation could explain the diminished gene content in Dendroctonus.
7/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Intriguingly, SPB and other Dendroctonus species seemed to have fewer genes than most other sequenced beetles. We ruled out annotation errors in Dendroctonus due to artifacts and biases.
6/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

We found a range of gene gains and losses both in SPB and in Dendroctonus that may be involved in specific adaptations and possibly in its aggressive behavior. Many conserved genes have been lost in this genus (lots more details are in the paper).

5/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
SPB galleries in loblolly pine bark

SPB galleries in loblolly pine bark

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Second, we wanted to know what the SPB genome can tell us about its tree-killing habit, given that SPB is the most destructive forest pest in the southeastern US with outbreaks that have greatly impacted loblolly pine commercial and natural forests.
4/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
three beetles karyotype comparison

three beetles karyotype comparison

First, Dendroctonus shows extreme karyotypic variation and multiple lineages that evolved neo-XY chromosomes.
Despite this variation, we confirmed that the core coleopteran Stevens elements are conserved in SPB, and we identified the bona fide SPB X chromosome.

3/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

SPB is one of about 6,500 species of so-called bark beetles, subfamily Scolytinae. Most bark beetles are non-aggressive, but the genus Dendroctonus, which literally means β€˜tree killer’, contains a number of species that can generate devastating outbreaks (hence the name..)

2/

17.12.2024 16:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
link to paper

link to paper

Hand with tiny spb beetle in it

Hand with tiny spb beetle in it

Happy to see our work on the assembly and genome analysis of the southern pine beetle (SPB) Dendroctonus frontalis out in RS Open Science!

So why SPB, and what did we learn? (and bonus surprise at the end..)

royalsocietypublishing.org/doi/full/10....

1/

17.12.2024 16:34 πŸ‘ 3 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
PNAS Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

A lovely commentary on @lucalivraghi.bsky.social and @hwkmthcrspr.bsky.social's recent papers, by VanKuren and Kronforst (bsky-less?). "β€œBeing wrong” has never been a bad thing in science because good scientists cannot let go of those little things that just do not line up" - πŸ”₯πŸ”₯πŸ”₯

02.12.2024 18:51 πŸ‘ 27 πŸ” 10 πŸ’¬ 1 πŸ“Œ 3

This thanksgiving I have learned that pumpkin tiramisu is fun to make, has a lot of spices and tastes like absolute garbage

29.11.2024 03:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
β€˜Dark proteome’ survey reveals thousands of new human genes Database confirms that overlooked segments of the genome code for a multitude of tiny proteins

Do you want to go further with your proteomics? Looking for something new in cancer?

Check out microproteins!

Thanks to @science.org for featuring this work, in collaboration with @sebastiaanvheesch.bsky.social, #HUPO, @gencodegenes.bsky.social

www.science.org/content/arti...

πŸ”Ž microprotein
🧬 πŸ’»

26.11.2024 18:05 πŸ‘ 61 πŸ” 16 πŸ’¬ 3 πŸ“Œ 1

What a freaking year

25.11.2024 05:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Loss of Earth’s old, wise, and large animals Earth’s old animals are in decline. Despite this, emerging research is revealing the vital contributions of older individuals to cultural transmission, population dynamics, and ecosystem processes and...

Very cool review in @science.org co-led by Kirk Winemiller from our ECCB dept!

www.science.org/doi/10.1126/...

23.11.2024 22:11 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This made me lol

23.11.2024 22:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
https://www.jobs.ac.uk/job/DKR867/lecturer-in-biochemistry

We are hiring a lecturer in Biochemistry. This is an attractive position which is permanent and I would love to see another chromosome or evolutionary biologist join us! Drop me a message if you have questions :)
t.co/4XhvY7k0Qy

22.11.2024 11:46 πŸ‘ 35 πŸ” 28 πŸ’¬ 1 πŸ“Œ 1

The real secret to the "Mediterranean diet" is eating equal qualities of pasta and antipasto so that they annihilate one another

21.11.2024 13:42 πŸ‘ 20113 πŸ” 2033 πŸ’¬ 330 πŸ“Œ 131

Next level tattoo, but you can get one only if you win the Nobel first

22.11.2024 20:31 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

We are delighted to announce that QuΓ©bec City (Canada) has been selected to host our annual conference in 2027. The meeting will be held from June 20 to 24, 2027, at the QuΓ©bec City Convention Centre. We are looking forward to hosting you in 2027.

See smbe/org news items for details

#smbe2027

21.11.2024 13:07 πŸ‘ 53 πŸ” 18 πŸ’¬ 1 πŸ“Œ 3
Microproteins: from Discovery to Applications | Keystone Symposia Join us at the Keystone Symposia on Microproteins: from Discovery to Applications, February 2025, in Beverly, with field leaders!

Small proteins, mighty potential! Whether you're an afficionado or just interested in diving into the world of #microproteins, join us for a Keystone meeting February 2025 in Beverly MA: www.keystonesymposia.org/conferences/...

19.11.2024 00:25 πŸ‘ 29 πŸ” 4 πŸ’¬ 2 πŸ“Œ 1

I have never seen the top track, guess your own data??

17.11.2024 21:40 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

who knew it would be easier to get everyone to switch social media platforms than getting them to use hg38

14.11.2024 18:45 πŸ‘ 254 πŸ” 62 πŸ’¬ 15 πŸ“Œ 13