Looking forward to show new results from @barleymicrobreed.bsky.social @bokuvienna.bsky.social -can we translate root gravitropic dynamics to predict field foraging patterns? #roots #barley #rootarchitecture #rootphenotyping #gravitropism @marketapernis.bsky.social thx for the invitation @ceitec.eu

How do you find a gravity-sensing system nobody knew existed? First, knock out all 4 Arabidopsis LAZY genes so the plants can't stand up. Then, mutagenize thousands of those plants, and look for the one that pops back up! One aa change (S149F in SLQ1), and a whole new pathway emerges. #gravitropism

#gravitropism. Er-Pm contact site protein SLQ1 vs LAZY

The ability of roots to control their growth direction will never stop to amaze me 😀 #gravitropism #roots #barley #rootphenotyping monitoring dynamics of root growth changes on soil (frames every 10 min during 1h, 1DAG primary root, 2nd time gravistimulated in a row)

Auxin Hormone Drives Root Bending Toward Gravity

Researchers at Nottingham and Shanghai Jiao Tong found an auxin‑activated gene that stiffens cell walls on the lower root side, causing downward bending. The study appears in Science Advances. getnews.me/auxin-hormone-drives-roo... #auxin #gravitropism #rootbiology

🌱 Scientists have revealed that the plant hormone auxin enables roots to bend and grow downwards, aiding in gravitropism, a crucial survival mechanism for plants in overcoming soil obstacles. Link: https://tinyurl.com/22mkaanw #PlantScience #Gravitropism #SustainableAgriculture

The PIN2 ortholog in barley modifies root gravitropism and architecture PIN-FORMED (PIN2) regulates root system architecture in barley. Gene editing was used to create novel genetic variants. Outcomes show wider root systems without impacting canopy development. In-dept...

acsess.onlinelibrary.wiley.com/doi/full/10....

#pinformed2 #pin2 mutant in #barley shows modified #roots growth dynamic, changes in #gravitropism and #rootarchitecture

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.

#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 transcription factor NF‐YA10 determines the area explored by Arabidopsis thaliana roots and directly regulates LAZY genes The NF-YA10 transcription factor participates in the control of genes involved in the gravitropic response of lateral roots in Arabidopsis and shapes the root system architecture by modulating the ar...

📜 The transcription factor NF-YA10 determines the area explored by Arabidopsis thaliana roots and directly regulates LAZY genes

🧑‍🔬 Andana Barrios, Federico Ariel, et al.

📔 @theplantjournal.bsky.social

🔗 onlinelibrary.wiley.com/doi/10.1111/...

#️⃣ #PlantScience #PlantDevelopment #Gravitropism

Diverse geotropic responses in the orchid family The architectural and functional innovations required to achieve fast gravitropism in flowering plants are lost in terrestrial and epiphytic orchids, but present in the early diverged orchid subfamil....

📜 Diverse geotropic responses in the orchid family

🧑‍🔬 Jhun‐Chen Chen, Yung‐I. Lee, Su‐Chiung Fang, et al.

📔 Plant, Cell & Environment

🔗 onlinelibrary.wiley.com/doi/10.1111/...

#️⃣ #PlantScience #PlantDevelopment #Gravitropism #Epiphytes

Reading recommendation by #ambassadorISRRWP6 @gwenkirschner.bsky.social
Aerial #roots epiphytic orchid Phalaenopsis aphrodite lack #gravitropism due to absence of starch granules, the PIN2 gene, #auxin redistribution, suggesting diverse geotropic responses of orchid family
doi.org/10.1111/pce....

Words of the day - #Gravitropism and #phototropism

KIPK and KIPK-LIKE1 suppress overbending during negative hypocotyl gravitropic growth bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution

📜 KIPK and KIPK-LIKE1 suppress overbending during negative hypocotyl gravitropic growth

🧑‍🔬 Yao Xiao, @uhammes.bsky.social, Claus Schwechheimer, et al.

📔 @biorxiv-plants.bsky.social

🔗 www.biorxiv.org/content/10.1...

#️⃣ #PlantScience #Gravitropism #PlantDevelopment

Defying Gravity: WEEP promotes negative gravitropism in peach trees by establishing asymmetric auxin gradients Polar auxin transport associated with gravitropism and lateral shoot and root orientation requires the highly conserved WEEP protein in peach.

📜 Defying Gravity: WEEP promotes negative gravitropism in peach trees by establishing asymmetric auxin gradients

🧑‍🔬 Andrea R. Kohler, Courtney A. Hollender, et al.

📔 Plant Physiology

🔗 academic.oup.com/plphys/advan...

#️⃣ (Feeds) #PlantScience #Phytohormones #Gravitropism #PlantPhysiology

LAZing Around: The Intricate Dance of Amyloplast Sedimentation and Gravity Sensing in Plants

📜 LAZing Around: The Intricate Dance of Amyloplast Sedimentation and Gravity Sensing in Plants

🧑‍🔬 Ning Zhang, Songtao Gui, Yonghong Wang

📔 Molecular Plant

🔗 www.sciencedirect.com/science/arti...

#️⃣ (Feeds) #PlantScience #PlantDevelopment #Gravitropism #RootBiology #Auxin