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Prashanth Ramachandran

@prshanth.bsky.social

Interested in the evolution of information processing and decision making pathways in plants 🌱 | Experimental Philosopher 🧐 Postdoctoral Associate, Dinneny lab, Stanford University, USA PhD, Carlsbecker lab, Uppsala University, Sweden

Posts Replies Media

Reposted by Prashanth Ramachandran

Ari Pekka Mähönen @apmahonen.bsky.social · 26/03/2025

It's out! Detailed transcriptome atlas of mature Arabidopsis root undergoing secondary growth. Fantastic work by Munan Lyu and Hiroyuki Iida + other lab members, wonderful collab with @bertderybel.bsky.social lab on the scRNAseq analysis. @treebiocoe.bsky.social 1/x www.nature.com/articles/s41...

nature.com

The dynamic and diverse nature of parenchyma cells in the Arabidopsis root during secondary growth - Nature Plants

A combination of lineage tracing and single-cell RNA sequencing reveals how xylem and phloem parenchyma cells in the secondary tissue of Arabidopsis root mature gradually. Upon root barrier injury, th...

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Reposted by Prashanth Ramachandran

Marc Somssich @somssich.bsky.social · 19/03/2025

#PlantScienceClassics #19: Root gravitropism: 120 years ago the starch-statolith theory was described, ~100 years ago the Cholodny-Went theory proposed, and 25 years ago the directional auxin flow was mapped as reverse fountain in the root tip. #Phytohormones #Gravitropism #Auxin #PlantScience

The title pages of the three papers: "Ueber die Art der Wahrnehmung des Schwerkraftreizes bei den Pflanzen" by Bohumil Řehoř Němec (1900), "Ueber die Perception des geotroplschen Reizes" by Gottlieb Johann Friedrich Haberlandt (1900), and "AUX1 regulates root gravitropism in Arabidopsis by facilitating auxin uptake within root apical tissues" by Alan Marchant et al. (1999). On the left, an sketch from Haberlandt, showing a set of cells from a root that was tilted by 13 degrees. The starch granules are visible inside the cells and have shifted from the center to the corners of the cells that is now pointing down along the gravitropic force. On the right is a sketch from Marchant, showing a root tip with arrows that indicate the auxin flow: Down toward the QC inside the vasculature, then out to the sides and back up toward the shoot in the outer tissues. When the root is slightly tilted, the shoot-ward auxin flow is redirected to the lower side, where it inhibits cell elongation. Hence, the cells on the opposite side elongate more, which leads to root bending.

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Reposted by Prashanth Ramachandran

Matthias Benoit @mattbnt.bsky.social · 05/03/2025

🚨New paper published in @nature.com! Using pan-genetics across the Solanum genus🍅🥔🍆we reveal why gene duplications🧬are major contingencies in crop engineering. My postdoc work in the Lippman lab @CSHL, collab. with @katiejenike.bsky.social @mikeschatz.bsky.social chatz.bsky.social and many others!

nature.com

Solanum pan-genetics reveals paralogues as contingencies in crop engineering - Nature

Gene duplication and subsequent paralogue diversification are major obstacles to genotype-to-phenotype predictability.

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Reposted by Prashanth Ramachandran

Maizel lab @maizel-lab.org · 17/02/2025

Delighted to unveil the poster and speakers list of the Mechanism of Plant Development meeting. 2 keynotes by @bradylabs.bsky.social & @nikogeldner.bsky.social to honour the legacy of P. Benfey & J. Chory. Congrats to @minyaaa.bsky.social for her beautiful Mimulus image. ➡️ tinyurl.com/24fsjq6a

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