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💡Great insight from PCP Editor @jennyrussinova.bsky.social on the use of #brassinosteroids to precision engineer crops
-see original post below

Find out more about BRs in action in our special issue
➡️ academic.oup.com/pcp/issue/65...

Organised by B. Poppenberger, J. Russinova & S Savaldi-Goldstein

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Fig. 8: Summary of the roles of BIN2-PCK1 regulatory module in Arabidopsis and sorghum/maize.

a) Brassinolide activates PCK1, by inhibiting BIN2 phosphorylation, to promote the conversion of lipids into sugar for Arabidopsis seedling establishment.

b) BR and light regulate PCK1 in bundle sheath cells (BSC) for photosynthesis in sorghum and maize. CO2 is fixed by PEP carboxylase (PEPC) to make OAA in mesophyll cells (MC). OAA is then converted to Asp and transported to BSC, where OAA is decarboxylated by PCK1, thus releasing CO2 for photosynthesis. PEP returns to the MC for the next round of C4 cycle.

Fig. 8: Summary of the roles of BIN2-PCK1 regulatory module in Arabidopsis and sorghum/maize. a) Brassinolide activates PCK1, by inhibiting BIN2 phosphorylation, to promote the conversion of lipids into sugar for Arabidopsis seedling establishment. b) BR and light regulate PCK1 in bundle sheath cells (BSC) for photosynthesis in sorghum and maize. CO2 is fixed by PEP carboxylase (PEPC) to make OAA in mesophyll cells (MC). OAA is then converted to Asp and transported to BSC, where OAA is decarboxylated by PCK1, thus releasing CO2 for photosynthesis. PEP returns to the MC for the next round of C4 cycle.

Great preprint by Zhang, Aizezi et al. (2025) on how #brassinosteroids promote phosphoenolpyruvate carboxykinase (PCK) activity for sugar synthesis in C3 and C4 plants, by inhibiting BIN2-mediated PCK phosphorylation at two conserved residues (Ser-62 and Thr-66). 🌱🌽

www.biorxiv.org/content/10.1...

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#SeedBio
Brassinosteroids in seeds have potential roles. Review covers BRs' functions in seed dev't. Need more research.
Details: maxapress.com/article/doi/10.48130/see...
#Brassinosteroids #SeedDevelopment

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A new paper by our talented lab member Hitaishi Khandal highlights the differential effects of #Brassinosteroids on root biomass and architecture.

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#SeedBio

Brassinosteroids in seeds: Higher content, distinct in dicots. Review on roles in seed devt. More research needed.

#Brassinosteroids #SeedDevelopment

Details: maxapress.com/article/doi/...

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And we’re off!

PCP EIC Tetsuya Higashiyama and Editor @jennyrussinova.bsky.social kick-start the @oxfordunipress.bsky.social sponsored session on intercellular and inter-organismal signalling at #JSPPKanazawa2025 meeting

#PlantScience #Conference
#Brassinosteroids

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Uneven hormone distribution in plants regulates cell division and growth, biologists discover New research from an international team of plant biologists, led by researchers at the VIB-UGent Center for Plant Systems Biology, has revealed crucial insights into the role brassinosteroids—essentia...

Uneven #hormone distribution in #plants regulates #cell_division and #growth, biologists discover.

#Brassinosteroids #signalling #cell_cycle #agriculture #scRNAseq

phys.org/news/2025-03...

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Final version of Topical Review "Take a deep BReath: Manipulating brassinosteroid homeostasis helps cereals adapt to environmental stress" by Karolina Zolkiewicz and @damiangruszka.bsky.social has just been published (OA) in Plant Physiology @plantphys.bsky.social #brassinosteroids #cereals🧬🌾

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😀Just been notified that our manuscript on #brassinosteroids by Karolina Zolkiewicz and @damiangruszka.bsky.social had been accepted for publication as #TopicalReview in Plant Physiology @plantphys.bsky.social Details will be revealed ASAP.

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Sex on Steroids: How Brassinosteroids Shape Reproductive Development in Flowering Plants Abstract. Since the discovery of brassinolide in the pollen of rapeseed, brassinosteroids (BRs) have consistently been associated with reproductive traits.

🌱Sex on Steroids…

Lima and Figueiredo explain how #Brassinosteroids could hold the key to improving crop traits and yield through their multifaceted regulation of the plant reproductive cycle (incl. fertility, hybridization barriers & seed development) 🌼🌱

📖 doi.org/10.1093/pcp/...

#PlantScience

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Composite image showing a photo of first-author, Gabriel Gómez-Ocampo (left), four graphs showing hypocotyl length under four different conditions (4 middle panels) and 20 images of hypocotyls at different time points and under different growth conditions (2 end panels on the right).

Composite image showing a photo of first-author, Gabriel Gómez-Ocampo (left), four graphs showing hypocotyl length under four different conditions (4 middle panels) and 20 images of hypocotyls at different time points and under different growth conditions (2 end panels on the right).

Shady goings on in the plant world….

Great work by Gómez-Ocampo & Colleagues who show how AtBBX21 inhibits hypocotyl elongation by reducing BR sensitivity & controlling BR homeostasis & shade-light induced genes.

📖EIC Choice: doi.org/10.1093/pcp/...

#PlantScience #Phytohormones #Brassinosteroids

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The whole and its parts: cell-specific functions of brassinosteroids Brassinosteroid (BR) phytohormones operate at both the cellular and organ levels, and impart distinct transcriptional responses in different cell types and developmental zones, with distinct effects o...

📜 The whole and its parts: cell-specific functions of brassinosteroids

🧑‍🔬 @zivaardening.bsky.social, Sigal Savaldi-Goldstein, et al.

📔 Trends in Plant Science

🔗 www.cell.com/trends/plant...

#️⃣ #PlantScience #PlantDevelopment #Brassinosteroids #Phytohormones

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Aerial image showing a 10-leaf Arabidopsis thaliana wild-type plant (right) and a much smaller mutant plant with curled inward facing leaves (left) defective in brassinosteroid hormone perception.

Aerial image showing a 10-leaf Arabidopsis thaliana wild-type plant (right) and a much smaller mutant plant with curled inward facing leaves (left) defective in brassinosteroid hormone perception.

📢Latest Special Issue on #Brassinosteroids – from Biosynthesis & Signalling to Crop Improvement 🌱

Editors: Brigitte Poppenberger, Eugenia (Jenny) Russinova, Sigal Savaldi-Goldstein
📖 doi.org/10.1093/pcp/...

Photo & credit: BR perception in action c/o Eun-Ji Kim, Russinova lab. #PlantScience

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Similar to FER, &, of course, the original do-it-all co-receptor BAK1, MIK2 is now also linked to more & more processes.

The authors show a link to #Auxin. So, like BAK1 linking Immunity & Development (via #Brassinosteroids), MIK2 now seems to do the same with different pathways.

#PlantScience 👇

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