Happy to see this out! Big congratulations to @nicolatrozzi.bsky.social and all involved! doi.org/10.1038/s443...

Open questions on facultative C4-CAM photosynthesis in Portulaca Abstract. Plants have evolved carbon concentrating mechanisms (CCMs) to optimize carbon fixation under environmental conditions that increase photorespirat

New paper on C4-CAM plants and using Portulaca as a model to study it 🌱 awesome collab with Ivan Reyna-Llorens! doi.org/10.1093/jxb/...

Congratulations, Andrea! 🥳

Happy to see this paper out!

🎙️🔬🍀

New episode of #No_Time_To_Read_podcast is online!

In this episode, Laura told us about cell cycle regulation during plant regeneration.

Podcast: tinyurl.com/2zv935d4
Article: tinyurl.com/mryz9e36

Fig. 1 (shortened, full legend in paper): Growth differences between meristem regions underlies gynoecium initiation in Arabidopsis. (A) Schematic top view of the inflorescence showing initiating floral buds at different developmental stages (St) according to Smyth et al. (1990). (B) Time-lapse series capturing carpel primordia establishment from early stage 5 to late stage 6 over 72 h at 24 h intervals. Median sepals were removed. (C) Heat maps of Gaussian curvature at the different stages; the bottom row shows virtual longitudinal sections through the bud along its lateral axis. Increases in positive Gaussian curvature are indicated with white arrows (dark red zones in the top image). The blue arrows indicate a carpel primordium emerging as a lateral protrusion on the floral meristem. (D) Heat map of percentage area expansion between the stages. (E) Heat map of cell divisions between the stages. (F) Heat map of cell sizes at the different stages.

🌸⚖️ RESEARCH ⚖️🌸

Live imaging and hormone manipulation shows how auxin–cytokinin crosstalk drives differential growth at the cellular level in the gynoecium to establish the correct geometry for carpel primordia initiation – Gómez-Felipe et al.

🔗 doi.org/10.1093/jxb/...
#PlantScience 🧪

Graphical model of the study. Root growth and cell cycle response in Arabidopsis thaliana, Brachypodium distachyon, and Lolium multiflorum during prestress, stress, and recovery periods.

Cell cycle follows 'pause and play; mechanism in salt and cold stress recovery in diverse plant species

Hazelwood et al. @ohazel.bsky.social @kamdiehl.bsky.social @aribidopsis.bsky.social

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

Proposed model for FASCIATED EAR 3 BARELY ANY MERISTEM 1D receptor signaling complex in Zea mays meristems.

Antagonistic interactions between CLAVATA receptors shape maize ear development

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
by Lindsay et al.

@penlindsay @WIleyPlantSci #PlantScience

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...

Recruitment of bifunctional regulator thermospermine to methylated ribosomes directs xylem fate Polyamines are often associated with ribosomes and are thought to stabilize their integrity. In Arabidopsis, the polyamine thermospermine (tSpm) affects xylem cell fate. tSpm induces translation of SU...

In @science.org this week, thermospermine affects ribosome methylation, which in turn regulates translation of xylem development proteins www.science.org/doi/10.1126/...

#plantscience

Big news from our lab: we can now stably edit the genome of a parasitic plant! Transgene-free, genome-edited P. japonicum in one generation! This will transform how we study #parasiticplants and other hard-to-transform plants.
www.biorxiv.org/content/10.6...

Happy to present our latest: Evolutionary adaptations to the hormonal regulation of vascular tissue development | PNAS www.pnas.org/doi/10.1073/.... Work by Wei Xiao and funded by @erc.europa.eu

Stomata In-Sight: Integrating Live Confocal Microscopy with Leaf Gas Exchange and Environmental Control The development of a tool to simultaneously measure stomatal conductance and aperture enables investigation into the role of stomatal anatomy in controllin

Stomata In-Sight: Integrating Live Confocal Microscopy with Leaf Gas Exchange and Environmental Control url: academic.oup.com/plphys/artic... @tombuckleylab.bsky.social @lawrensack.bsky.social @sheffieldpps.bsky.social @scottmcadam.bsky.social @stanfordstomata.bsky.social

Did you ever wonder how a dividing cambium cell looks like and what determines its striking regular division? Xiomin Liu, PhD student in the lab, found out in a heroic histological approach. Fruitful collaboration with the group of Sabine Müller (@phragmoplast.bsky.social) doi.org/10.64898/202...

Fig. 1.Auxin, cytokinin, and gibberellin as a hormonal triad controlling inducible plantlet formation on the leaf margins of K. pinnata. During early leaf development, auxin (AUX) and cytokinin (CK) drive the formation of crenulations. Crenulations are required for the subsequent development of epiphyllous buds (EBs). In attached mature leaves, the EBs are kept dormant by gibberellic acid (GA3). Once the leaf is detached, GA3 depletion and accumulation of AUX and CK in the EBs induce plantlet initiation. The interactive feedback network between the hormones regulates further plantlet development.

🌿 INSIGHT 🌿

"Leaf as nursery: insights on hormonal control of asexual reproduction from Kalanchoë pinnata".
Joanna Kacprzyk comments on research recently published in JXB by Jácome-Blásquez et al.

Insight 🔗 doi.org/10.1093/jxb/...
Research 🔗 doi.org/10.1093/jxb/...

#PlantScience 🧪

Cycad plants use thermogenesis to warm their reproductive cones. A beetle dusted with pollen and fluorescent dyes lands on the warm cone of a cycad. High concentrations of dye have been deposited on the cone’s hottest regions during previous visits by other labeled beetles. Beetle pollinators use these thermal infrared patterns as a guide to locate host pollen and ovulate cones.

Long before flowers dazzled pollinators with brilliant colors and sweet scents, ancient plants used another feature to signal insects: heat. The findings in Science offer insights into what shaped the earliest eras of plant-animal coevolution.

Read more in this week's issue: https://scim.ag/4rVtArQ

Our editors write:

- Organ patterning: Phyllotaxis by emerging apical vasculature rdcu.be/eR3Hm

A highlight of this paper in @cp-devcell.bsky.social : "Self-organization of vascular strands drives their patterning in the Arabidopsis shoot apex"
www.sciencedirect.com/science/arti...

Cambium LBDs promote radial growth by regulating PLL-mediated pectin metabolism - Nature Plants This study reveals that LBD transcription factors in the cambium drive radial plant growth by regulating PECTATE LYASE-LIKE (PLL) enzymes that remodel cell wall pectin, promoting cell expansion.

We found that cytokinin-induced LBDs drive radial (secondary) growth in Arabidopsis root by reshaping primary cell wall pectin, in part through four pectate-lyase-like genes. Huge congrats to the fantastic postdocs who led this work: Lingling Ye and Xin Wang. 1/x www.nature.com/articles/s41...

How do Xylem-Pole-Pericycle cells decide between forming a new Lateral Root or contributing to cambium formation & secondary growth?

Cytokinins facilitate cambium development & reduce LR potency, shaping the entire root architecture!

@apmahonen.bsky.social
doi.org/10.1016/j.mo...
#PlantScience

“The ZAT14 family promotes cell death and regulates expansins to affect xylem formation and salt tolerance in Arabidopsis”. Now out in @theplantcell.bsky.social led by Ming Feng and colleagues. A 🌱 thread 👇 1/x
academic.oup.com/plcell/advan...

Very happy to share that this paper is now online on @currentbiology.bsky.social !! 🥳🧪 Check out the final published verion here: www.cell.com/current-biol...
#mimuluspropaganda

Fig. 2.Localization of RS2Z proteins in all vegetative and reproductive organs. Translational fusions are expressed in seed coat (A/a), embryo (B/b), hypocotyl (C/c), and cotyledons (D/d), 2-week-old root epidermis (E/e) including root hairs (F/f), leaf epidermis (G/g–I/i) including trichomes (G/g and H/h) and stomata (I/i), immature floral bud (including sepals, petals, stamens, and pistil) (J/j), mature gynoecium (valves, stigma, and style) (K/k), mature androecium (anther and filament) (L/l), pollen grains [(M/m and N/n), arrow], ovules (O/o), and funiculi [(O/o), arrow], petals (including veins) (P/p) and sepals (including veins) (Q/q). Red signals represent chlorophyll autofluorescence. At least three independent T3 homozygous lines were generated and analyzed, revealing similar fluorescence profiles.

🧬 RESEARCH 🧬

Specific domains of the Arabidopsis RS2Z splicing factors contribute to their nuclear localization, nucleocytoplasmic dynamics, and ability to contact protein partners and specific pyrimidine-rich RNA motifs - Fanara et al.

🔗 doi.org/10.1093/jxb/...

#PlantScience 🧪

Single-cell and spatial omics reveal progressive loss of xylem developmental complexity across seed plants Single-cell and spatial omics in conifers uncover conserved radial lineages but divergent axial trajectories with angiosperm-like and gymnosperm-specific f

Single-cell and spatial omics reveal progressive loss of xylem developmental complexity across seed plants (Peng Shuai, Jo-Wei Allison Hsieh, et al) doi.org/10.1093/plce... #PlantScience @aspbofficial

Parabéns @renatacferrari.bsky.social !!

Image shows two elongated cells with rounded tips. The cell periphery and internal structures are visible in different shades of orange. Some internal structures are very small, while others are very big and occupy a large part of the cell. Small cyan-colored ovoid chloroplasts are dotted around within the cells.

During my postdoc, I looked at hundreds of images like this 🤩
These are two apical caulonemal cells from moss Physcomitrium patens stained with MDY64 (shown in shades of orange). The natural autofluorescence of chlorophyll is in cyan.
#microscopymonday #moss #plantcells #plantmicroscopy

Hydathodes at the forefront of plant immunity against vascular pathogens Hydathodes are tiny plant organs that form an interface between the leaf surface and xylem vasculature. They facilitate excretion of xylem fluid under…

We wrote a review 📖 on hydathode immunity! Learn how bacteria exploit hydathodes to access the vasculature and open questions for future research.

📣 If you are curious about this topic, please consider applying for two open positions in my lab (until Nov23)! www.sciencedirect.com/science/arti...

A watercolor illustration showing the modern cultivars of squash descended from the ancestral Cucurbita pepo. C. pepo is in the middle, depicted as a round-ish speckled squash ripening from green to yellow-orange. Acorn squash, zucchini, pumpkin, delicata, pattypan, and yellow squash surround it in a circle, each connected to C. pepo by a line, like spokes in a wheel. Illustration by Ferris Jabr.

Cucurbita pepo is one of the oldest domesticated species. Over millennia, it has proved astoundingly versatile.

Just as Brassica oleracea gave us broccoli, kale, cabbage, Brussels sprouts etc, C. pepo morphed into the pumpkin, zucchini, delicata, pattypan, acorn, yellow squash and more!

Coming this week! @minyaaa.bsky.social @roederlab.bsky.social @naascarabidopsis.bsky.social 🌱 Join us for our upcoming workshop Quantifying Plant Morphogenesis: 4D Insights with MorphoGraphX!
Learn how to quantitatively analyze plant confocal imaging data using MorphoGraphX.

Leaf development engineering challenges and opportunities.

#TansleyReview: Unlocking #grass leaf development: foundations for tunable #cereal design

Trisha McAllister, Hilde Nelissen, Josh Strable and Annis Richardson 👇

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

#LatestIssue #PlantScience