Prashanth Ramachandran
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prshanth.bsky.social
Prashanth Ramachandran
@prshanth.bsky.social
88 followers 220 following 0 posts
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
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Reposted by Prashanth Ramachandran
apmahonen.bsky.social
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...
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...
www.nature.com
March 26, 2025 at 3:35 PM
Reposted by Prashanth Ramachandran
somssich.bsky.social
#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.
March 19, 2025 at 3:14 PM
Reposted by Prashanth Ramachandran
mattbnt.bsky.social
🚨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!
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.
nature.com
March 5, 2025 at 4:43 PM
Reposted by Prashanth Ramachandran
maizel-lab.org
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
February 17, 2025 at 12:13 PM