Nikolas Chaves

I believe in the Xanthomonas supremacy in plant bacteriology! 🦠🧎‍♂️

3 unexpected things we owe to the plant pathogenic bacterium Xanthomonas I have a special relationship with the bacterium Xanthomonas. As a grad student at UC Davis, I did my thesis research on Xanthomonas…

3 unexpected things we owe to the plant pathogenic bacterium Xanthomonas kamounlab.medium.com/3-unexpected...

"1 is blue" 🤣. Maybe the first black people will appear in the next slide update

Wait! So I could be a mermaid 🧜‍♀️ in Copacabana beach right now? Not bad, huh?

yes. totally. the philosopher may have had the wrong idea at her first glance, though

collecting my last common bean seeds for the common bacterial blight resistance breeding program. This sounds like the ending of my PhD... cause it is

This morning reading: The beginner's charm ✨️ in Science

🧪

www.nature.com/articles/d41...

guess the tomato bacterial spot severity note!

some philosophers use biological science concepts with mastery; some others do not. I was reviewing a quote suggesting an opposition between symbiosis and Darwinian evolution. do some of you agree with it? 🤔

I found this problem with one of them, a Microbacteriaceae. For them, gyrB and recA are reliable for taxonomy. The solution was to consider that trash data as... trash data. I chose to cite it in my discussion; I think that the proper behaviour is to honestly announce the published wrong 🤷‍♂️.

Nice to read from you, Omid. Thank you for your insights. There, I am referring to a lateral work that I am conducting. In it, I am investigating the etiology of a bacteriosis reported by farmers in Brazil. We find at least three bacteria involved in disease.

After this consideration, I still consider this sequence a putative essential enhancer.

By the way, it had become a pleasant exercise, something like a tabletop RPG on science concepts. 😅

A modern example of the social impact of plant diseases. There are reports of "improvised" experiments conducted by small farmers by themselves to find solutions. Great to see farmers trusting in science. I hope that we deal with it quickly. 🧪

Vassoura-de-bruxa: Fungo ameaça mandioca e alimentação de indígenas no Amapá A extensa fronteira do Brasil com a Guiana Francesa foi a porta de entrada do fungo que já se espalhou por oito dos 16 municípios do Amapá e coloca estado em situação de emergência

[Cassava Witches Broom Disease: Fungus threatens cassava and the diet of indigenous people in Amapá, Brazil]. Vassoura-de-bruxa: Fungo ameaça mandioca e alimentação de indígenas no Amapá g1.globo.com/jornal-nacio...

Ok. Conceptually, thinking of an exon without transcription is paradoxical. It may be an AI hallucination. However, I also hypothesise that enhancers could fit as the described sequence. It may regulate gene transcription of genes very distant in the genome sequence. How about it?

I see! Let's align our presupposed: with nonfunctional exon, you mean an ORF (with promoters, terminators, etc.) that is confirmedly not transcribed? I am still thinking on possibilities.

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Post-transcriptionally, a 5' exon could act as a regulator of downstream functional exons on a given mRNA. A second possibility is post-translational modifications in the same notion. The 5' exon could experimentally be ignored due to its nonfunctionality to the protein activity.

Let me consider: intact = no mutations over millions of years? I am thinking of different possibilities 🤔; however, nothing much specific to plants.

I wish you a happy birthday. Here is my favorite: the eccentric 💞 passionfruit 💕 flower

it would be lovely if my application competitors were like that... 😅

We’re a bunch of amateur psychologists… #AcademicChatter #phdchat

a woman is looking at a chalkboard with mathematical equations on it . ALT: a woman is looking at a chalkboard with mathematical equations on it .

There’s no report of this disease, nor a description of Koch's postulates. There is just a genome sequence 🤷‍♂️. NCBI classified the sequence as contaminated and fragmented. I BLASTed gyrB and recA sequences, which match a completely different genus. So... WHAT?! How do I discuss it in my work?

Working on a new plant bacterial disease report! However, there’s a 2015 genome announcement of a bacterium from the same genus causing disease on the same plant as my work... 🤔 I obviously decided to compare 🔎.

Elementary 3D organization of active and silenced E. coli genome - Nature An ultra-high-resolution chromatin organization map of E. coli, using Micro-C, reveals intricate chromatin structures involved in the silencing of horizontally transferred genes and those associated with active operons.

Nature research paper: Elementary 3D organization of active and silenced E. coli genome

go.nature.com/4n1DTY7

Brazilian Plant Pathology Conference (last week) 🌱🦠! I presented some intriguing results from a bioinformatics course homework on Xanthomonas effector activity inside common bean cells. coming soon to Zenodo 😉

diseased passionfruit leaf

diseased banana leaf

diseased sugarcane leaf 1

diseased sugarcane leaf 2

images from the gallery of a plant pathologist on vacation 🦠🌱. spotting beautiful symptoms on passionfruit, banana, and sugarcane leaves

How to Manage Your Time Effectively as a Researcher | Plantae The role of a researcher encompasses a wide range of demanding and often competing responsibilities, including experimental design, data analysis, manuscript writing, grant preparation, teaching…

Sharing good practices: I received this essay through the @aspbofficial.bsky.social newsletter. I recommend it if you, like me, are entangled in multitasking and several research projects

plantae.org/how-to-manag...

I'm on those days when you want to do many things, but these things don't want the same. I had trouble even in preparing an agarose gel 😥. A nice day to work on the enlightenment of "things have their own time"

how about the Plant Pathology program at the Universidade Federal de Viçosa, Brazil? we're the reference on Latin America. UFV is a great place for multidisciplinary plant and microbe sciences 🌱🦠, and also a friendly place for foreigners. text me if you need more