Diego A. Márquez
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dmarquez.bsky.social
Diego A. Márquez
@dmarquez.bsky.social
510 followers 330 following 11 posts
I am a Plant Physiologist interested in water and CO2 movement within the leaf | Research Fellow Busch Lab | Born at 345 ppm atmospheric CO2
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dmarquez.bsky.social
Diego A. Márquez @dmarquez.bsky.social · Nov 16
My first post in BSky, let's do it about our last paper (doi.org/10.1073/pnas...). We show how vital nonstomatal control of transpiration is for maintaining high assimilation rates in plants such as maize and sorghum under increased VPD. This mechanism boosts C4 plants' water-use efficiency.
Diagram of the mechanism of nonstomatal control of transpiration as VPD increases, generating unsaturation in the substomatal cavity. The parameters in the figure are atmospheric water vapour concentration (wa), water vapour concentration on the leaf surface (ws), substomatal cavity water vapour concentration (wi), water vapour concentration at saturation (wsat), resistance to water diffusion through the plasma membrane (rp), cell wall water potential (Ψw), and cytosolic water potential (Ψc). Black dots represent cell wall fibres. The current theory suggests that aquaporins acting as transmembrane conduits close when VPD rises, increasing the resistance to water movement through the membrane of mesophyll cells (rp) and triggering unsaturation in the substomatal cavity.
Reposted by Diego A. Márquez
mabi-behruznia.bsky.social
So excited to share our new preprint!
We used meta-transcriptomics and multiplex imaging to identify disease-specific signatures in liver tissues. We also detected viral signatures and immune activation pathways in seronegative hepatitis (SNH) patients.
#Autoimmune_hepatitis
#Seronegative_hepatitis
assets-eu.researchsquare.com
November 13, 2025 at 5:05 PM
dmarquez.bsky.social
If you’re interested in gaining practical experience with the use of stable isotopes and related equipment in plant and environmental science, I can recommend the SIBS workshop (30 Jan – 6 Feb 2026, Uni of Sydney, Australia).

Details: www.bioisotopesworkshop.com/workshop-info/
Workshop Info
Hands-on stable isotope workshops across Australia.
www.bioisotopesworkshop.com
November 10, 2025 at 12:44 AM
Reposted by Diego A. Márquez
thepallavisingh.bsky.social
**Please Repost**

Pallavi Singh Lab is looking for two Postdocs to join our team studying how plants balance carbon, water, and resilience in a changing climate.

PlantPlug PDRA: vacancies.essex.ac.uk/tlive_webrec...

REVOLUTION PDRA: vacancies.essex.ac.uk/tlive_webrec...

Deadline: October 15.
October 4, 2025 at 11:20 AM
Reposted by Diego A. Márquez
royalsociety.org
Professor Susanne von Caemmerer FRS and Professor Graham Douglas Farquhar FRS are jointly awarded the Royal Medal (Biological) 2025 for refining the ways we monitor and model photosynthesis in leaves from molecular to global scales. #RSMedals https://royalsociety.org/medals-and-prizes/royal-medals/
August 28, 2025 at 10:30 AM
dmarquez.bsky.social
Flash talks at the New Phytologist Next Generation Scientists 2025 event at the University of Birmingham, UK!

Sharing insights on mesophyll conductance—how shifts in liquid-phase diffusivity shape gas exchange.

@newphyt.bsky.social

@unibirmingham.bsky.social
August 5, 2025 at 3:45 AM
dmarquez.bsky.social
Preprint with @lucascernusak.bsky.social, @florianabusch.bsky.social and Graham Farquhar!

We show that mesophyll cell water status is the key signal regulating non-stomatal control of transpiration. We introduce a mechanistic model linking plant hydraulics and gas exchange.

doi.org/10.1101/2025...
July 13, 2025 at 7:03 AM
dmarquez.bsky.social
🌱 The first issue of Plant Ecophysiology is out!

Chief Editor Jaume Flexas shares his vision for the future of plant science publishing—and how Plant-Environment Interactions is leading the way.

A standout feature? Reviewers are paid for their work.

Editorial: media.sciltp.com/articles/250...
media.sciltp.com
June 19, 2025 at 1:25 AM
dmarquez.bsky.social
Very excited to present our research on “Biochemical Modulation of Mesophyll Resistance” at the Gordon Research Seminar in June. Many thanks to the organisers for the opportunity.

Looking forward to discussing mesophyll conductance and photosynthesis with everyone at the meeting in Newry!
May 9, 2025 at 4:31 PM
Reposted by Diego A. Márquez
insilicoplants.bsky.social
We are a proud sponsor of CO2 Assimilation in Plants from Genome to Biome: Probing Mechanisms Across Scales Gordon Research Conference
June 8 - 13, 2025 | Newry, Maine
register here: www.grc.org/co2-assimila... #PlantScience #PlantSciEvents
April 30, 2025 at 7:05 PM
dmarquez.bsky.social
Excited to share a new preprint led by Alicia Perera-Castro! 🌿

Mosses actively regulate water loss without stomata, challenging the view of poikilohydry as purely passive—and hinting at a mechanism analogous (perhaps ancestral?) to nonstomatal control in angiosperms.
www.biorxiv.org/content/10.1...
Evidence for active regulation of transpiration in non-stomatal plants
### Competing Interest Statement The authors have declared no competing interest.
www.biorxiv.org
April 5, 2025 at 6:32 AM
Reposted by Diego A. Márquez
imibirmingham.bsky.social
We are in Liverpool this week at the @microbiologysociety.org Annual Conference
our IMI line up today looks like this .. #Microbio25
Image shows five speakers four of which are female and one male from the Institute of Microbiology and Infection speaking today the Microbiology Society Annual Conference
March 31, 2025 at 1:05 PM
dmarquez.bsky.social
Sunny day in Birmingham… lunch on the grass today, and a storm tomorrow for sure 🤣
April 1, 2025 at 12:47 PM
Reposted by Diego A. Márquez
newphyt.bsky.social
'With modern communications pressing to steal my attention I try to remember to take a step back and appreciate the privilege that it is to be able to spend my time working on things that I find so interesting.'

In #Profile: Lucas A. Cernusak

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
Lucas A. Cernusak
March 29, 2025 at 10:25 AM
Reposted by Diego A. Márquez
newphyt.bsky.social
📢 Deadline today!

Apply to attend New Phytologist next generation scientists 2025 - a FREE meeting for early career researchers in #PlantScience.

4–7 August 2025
University of Birmingham, UK

Apply now! https://www.newphytologist.org/nextgenevents/2025
Group photograph of delegates at New Phytologist next generation scientists 2024.
January 27, 2025 at 12:00 PM
Reposted by Diego A. Márquez
newphyt.bsky.social
Don't miss your opportunity to attend New Phytologist next generation scientists, the FREE meeting for early career researchers in plant science. #npnextgen

4–7 July 2025
Birmingham, UK

Apply to attend by 27 January!
www.newphytologist.org/nextgenevent...
People at a conference. A quotation from a New Phytologist next generation scientists delegate reads '#npnextgen really is an excellent way to meet inspiring people and broaden your outlook on science.'
January 22, 2025 at 5:35 PM
Reposted by Diego A. Márquez
x847.bsky.social
Definitely a recommended read for any exchanger of gases working with stressed and low-flux material. This summarizes many important considerations and measurement assumptions underlying the models of stomatal conductance and other derived parameters which are implemented in gas exchange systems.
dmarquez.bsky.social Diego A. Márquez @dmarquez.bsky.social · Jan 14
Excited to share our paper with Anna Gardner and @florianabusch.bsky.social in Plant Ecophysiology!🌿

We review challenges in interpreting plant stress responses using gas exchange data, offer solutions to improve accuracy and discuss gaps in our current knowledge.

www.sciltp.com/journals/Pla...
Detailed representation of H2O gas exchange (left) and CO2 gas exchange (right) at the adaxial (upper) and abaxial (lower) leaf surfaces in an amphistomatous leaf. This panel illustrates the separate gas exchange processes for each leaf surface, which can be measured individually if the upper and lower cuvettes are analysed separately—though this setup is not common in commercial gas exchange systems. Stomatal, cuticle, and boundary layer resistances are depicted for both surfaces, along with the mole fractions of water vapour and CO2.
January 23, 2025 at 9:08 PM
Reposted by Diego A. Márquez
a-gthy.bsky.social
Very happy to see this paper out in Plant, Cell & Environment ! 🥳

We show that:
➡️ Foliar water uptake contribute to leaf water potential recovery in mangroves 🌿💧
➡️ Tidal dynamic did not affect morning dew uptake 🌳🌊

onlinelibrary.wiley.com/doi/pdf/10.1...
Small mangrove species Aegiceris corniculatum flowering
January 15, 2025 at 2:38 PM
dmarquez.bsky.social
Excited to share our paper with Anna Gardner and @florianabusch.bsky.social in Plant Ecophysiology!🌿

We review challenges in interpreting plant stress responses using gas exchange data, offer solutions to improve accuracy and discuss gaps in our current knowledge.

www.sciltp.com/journals/Pla...
Detailed representation of H2O gas exchange (left) and CO2 gas exchange (right) at the adaxial (upper) and abaxial (lower) leaf surfaces in an amphistomatous leaf. This panel illustrates the separate gas exchange processes for each leaf surface, which can be measured individually if the upper and lower cuvettes are analysed separately—though this setup is not common in commercial gas exchange systems. Stomatal, cuticle, and boundary layer resistances are depicted for both surfaces, along with the mole fractions of water vapour and CO2.
January 14, 2025 at 3:51 PM
Reposted by Diego A. Márquez
newphyt.bsky.social
New Phytologist next generation scientists 2025 takes place on 4–7 August at the University of Birmingham!

Don't miss your opportunity to join this unique meeting of early career plant scientists! Apply to attend by 27 January:

www.newphytologist.org/nextgenevent...

#PlantScience #npnextgen
January 8, 2025 at 5:03 PM
Reposted by Diego A. Márquez
lawrensack.bsky.social
Resolving the contrasting leaf hydraulic adaptation of C3 and C4 grasses - Alec Baird et al. - New Phytologist - nph.onlinelibrary.wiley.com/doi/full/10.... @colinplants.bsky.social @cscoffoni.bsky.social @hcochard.bsky.social @erikajedw.bsky.social
January 6, 2025 at 7:23 AM
Reposted by Diego A. Márquez
vinayshukla.bsky.social
Deciphering the core shunt mechanism in Arabidopsis cuticular wax biosynthesis and its role in plant environmental adaptation
www.nature.com/articles/s41...
#plantscience
January 4, 2025 at 4:45 PM
Reposted by Diego A. Márquez
newphyt.bsky.social
New Phytologist next generation scientists is a unique meeting organised for, and by, early career researchers.

Next year's meeting takes place at the University of Birmingham, UK, on 4–7 August.

Applications close on 27 January - apply now!
https://www.newphytologist.org/nextgenevents/2025
Conference delegates look at posters
December 23, 2024 at 11:00 AM
Reposted by Diego A. Márquez
huguesrenault.bsky.social
A postdoctoral position is available in the team of Gwyneth Ingram @rdplab.bsky.social as part of a collaborative project with our group @ibmp-cnrs.bsky.social

#plantscience
December 16, 2024 at 5:10 PM
Reposted by Diego A. Márquez
seanmichaletz.bsky.social
New in #NewPhytologist: Temperature governs the relative contributions of cuticle and stomata to leaf minimum conductance (shorturl.at/f9h7O) - Exciting work with #MichaletzLab PhD graduate #JosefGaren @ubcbotany.bsky.social @ubcbiodiversity.bsky.social @science.ubc.ca @newphyt.bsky.social
Leaf water fluxes during times of high and low water availability.
December 17, 2024 at 12:09 AM
dmarquez.bsky.social
I just finished the amazing EMBL Hands-on Proteomics Curse!

It was packed with practical sessions on sample prep, instrument demos, and bioinformatics, plus excellent theoretical insights. Huge thanks to the brilliant instructors and organisers! 🙌

#EMBLProteomics
December 6, 2024 at 8:26 PM