@AlexaMNicolas

postdoc with @s_tavazoie | PhD in microbiology @PMB_Berkeley w @Firestone_Lab + @UCBTagaLab | former steward UC-UAW, currently @CPWUAW | i eat soil

 Columbia University, New York
Joined June 2019
  • Tweets90
  • Following263
  • Followers239
16Media
In @UCBTagaLab Zoila, @ZHallberg, and I dove into studying the impact of nutrients like Vitamin B12 (corrinoids) on community-wide & isolate-specific scales. How often do you see paired studies like these?! Our sibling papers are out now in @ISMEJournal! academic.oup.com/ismej/artic…

Soil microbial community response to corrinoids is shaped by a natural reservoir of vitamin B12

Abstract. Soil microbial communities perform critical ecosystem services through the collective metabolic activities of numerous individual organisms. Most

academic.oup.com
Zoila Alvarez Aponte@zoilaialvarez31 Jul 2024
My first, first author paper is out in @ISMEJournal ! Over the past few years in the @UCBTagaLab we have been learning about how soil bacteria share corrinoids, largely thanks to funding from @DOEScience. Here, we got some answers by studying isolates.🧵 doi.org/10.1093/ismejo/wrae0…

Phylogenetic distribution and experimental characterization of corrinoid production and dependence...

Abstract. Soil microbial communities impact carbon sequestration and release, biogeochemical cycling, and agricultural yields. These global effects rely on

academic.oup.com
4
13
1,586
Today we’re making history in NYC - we have a chance to elect leaders who stand with workers. When we were on strike, @ZohranKMamdani and @bradlander stood with us. Rank Mamdani #1 and Lander #2. Vote union strong. ✊
3
3
22
3,568
Alexa M Nicolas retweeted
Menghan Liu@menghan_liu8 Apr 2025
1/ Excited to share our new study in @CellCellPress :"Conserved genetic basis for microbial colonization of the gut" We present a tree-of-life-scale genotype-habitat association that reveals conserved gene modules in gut microbes—and identifies novel colonization factors.
Saeed Tavazoie@s_tavazoie7 Apr 2025
Computational discovery and experimental validation of mammalian gut colonization factors. Work led by our own amazing @menghan_liu in collaboration with @SohailTavazoie lab at @RockefellerUniv. @Columbia_Bio @ColumbiaSysBio @ColumbiaBiochem cell.com/cell/fulltext/S0092…

Conserved genetic basis for microbial colonization of the gut

Tree-of-life scale genotype-habitat association reveals conserved gene modules across thousands of gut microbial species and identifies previously undescribed factors that modulate microbial coloni...

cell.com
5
25
2
138
28,184
With congressional budget hearings approaching, we are facing massive funding cuts to federal research agencies. In response, a coalition of higher education workers and labor unions are uniting to Kill the Cuts! Join us and countless others on April 8th for a day of mass action!
6
8
502
The Columbia Postdoctoral Workers Organizing Committee condemns the ICE detention of Mahmoud Khalil. We demand that Columbia restore its sanctuary campus policy and fight back against threats to the safety of international workers. Full statement here: drive.google.com/file/d/1pL4…

CPW Sanctuary Campus Statement.pdf

drive.google.com
10
32
1,158
Alexa M Nicolas retweeted
Cameron Thrash@jcamthrash14 Jan 2025
Codon bias, nucleotide selection, and genome size predict in situ bacterial growth rate and transcription in rewetted soil pnas.org/doi/abs/10.1073/pna…

Codon bias, nucleotide selection, and genome size predict in situ bacterial growth rate and...

In soils, the first rain after a prolonged dry period represents a major pulse event impacting soil microbial community function, yet we lack a ful...

pnas.org
6
1
41
3,376
Researchers @zoilaialvarez, @ZHallberg, @AlexaMNicolas, and others in the @UCBTagaLab have developed a new model that allows them to dissect how one nutrient impacts microbial communities across scales by influencing intermicrobial interactions. plantandmicrobiology.berkele…
3
8
665
Alexa M Nicolas retweeted
Alex Jaffe@alexander_jaffe13 May 2024
it's preprint day! happy to share my first piece of postdoc work as well as my first in the marine space, this time, exploring the biology of bacteria and archaea fixing carbon with rubisco in the deep water column
bioRxiv Microbiology@biorxiv_micrbio11 May 2024
Abundant and metabolically flexible lineages within the SAR324 and gammaproteobacteria dominate the potential for rubisco-mediated ... biorxiv.org/cgi/content/shor… #biorxiv_micrbio
1
4
1
23
3,956
Phylogenetic distribution and experimental characterization of corrinoid production and dependence in soil bacterial isolates [conserved in 47 out of 85 genera] @ISMEJournal by @zoilaialvarez et al from @UCBTagaLab academic.oup.com/ismej/advan…

Phylogenetic distribution and experimental characterization of corrinoid production and dependence...

Abstract. Soil microbial communities impact carbon sequestration and release, biogeochemical cycling, and agricultural yields. These global effects rely on

academic.oup.com
2
6
1,018
Alexa M Nicolas retweeted
Taga Lab@UCBTagaLab5 Jan 2024
Check out @zoilaialvarez 's work on corrinoid production in soil isolates here: biorxiv.org/content/10.1101/… (3/3)

Phylogenetic distribution and experimental characterization of corrinoid production and dependence...

Soil microbial communities impact carbon sequestration and release, biogeochemical cycling, and agricultural yields. These global effects rely on metabolic interactions that modulate community...

biorxiv.org
3
9
568
Fresh off the virtual press – new work from @Tagalab with @Zhallberg! A little behind the scenes on the findings and makings of this project:
bioRxiv Microbiology@biorxiv_micrbio13 Feb 2024
Vitamin B12 variants structure soil microbial communities despite soil's vast reservoir of B12. biorxiv.org/cgi/content/shor… #biorxiv_micrbio
3
12
29
4,439
more replies
And these ideas extended to others! Coauthor @zoilaialvarez developed a project using corrinoids to tackle the great plate count anomaly & successfully cultured + characterized 100s of soil microbes from the same field site in N CA biorxiv.org/content/10.1101/…

Phylogenetic distribution and experimental characterization of corrinoid production and dependence...

Soil microbial communities impact carbon sequestration and release, biogeochemical cycling, and agricultural yields. These global effects rely on metabolic interactions that modulate community...

biorxiv.org
1
1
236
I made a gaffe, @UCBTagaLab is the correct handle!
1
190
Alexa M Nicolas retweeted
Cameron Thrash@jcamthrash13 Feb 2024
Vitamin B12 variants structure soil microbial communities despite soil's vast reservoir of B12. biorxiv.org/content/10.1101/…

Vitamin B12 variants structure soil microbial communities despite soil’s vast reservoir of B12

Soil microbial communities perform critical ecosystem services through the collective metabolic activities of numerous individual organisms. Most microbes use corrinoids, a structurally diverse...

biorxiv.org
4
14
1,432
Load more