Obituary for David (Stuart) Letham detailing an amazing life and the work he did to forward the Cytokinin field #cytokinin nam11.safelinks.protection.outlook.com?url=https%3A...

Once they had identified kinetin, they sought to improve their culture medium to take full advantage of the growth promoting effects of #auxin & #cytokinin, and to have a reliable bioassay. Graduate student Toshio Murashige took on this task to optimize the medium. He first focused on Tobacco sap.

Frontiers | The cytokinin histidine kinase receptors regulate nodulation, shoot and root development in Pisum sativum In this study, we expanded the understanding of cytokinin (CK) perception in legumes by generating and characterizing novel pea cytokinin receptor mutants ca...

📢 New publication 'The #cytokinin histidine kinase receptors regulate nodulation, shoot and root development in Pisum sativum' by Karen Velandia et al. in Frontiers in Plant Science 🧪🫛

doi.org/10.3389/fpls...

Chemical structure of kinetin from the 1955 paper. It reads: From the above and previously published evidence it was concluded that kinetin most probably is 6-furfurylaminopurine, I. The formula is C10H9N5O.

Eventually, Miller isolated 6-furfurylaminopurine from autoclaved DNA, which, due to its ability to promote cell division (cytokinesis), they called “Kinetin”. They also resolved the chemical structure. This was the first described #Cytokinin, and the second recognized #Phytohormone.

The authors of the two papers. Carlos O. Miller standing on the left, looking down upon a couple of glass beakers. Opposite him, from the back to the front, are Malcolm H. van Saltza, Francis Shigeo Okumura, Folke K. Skoog and Frank M. Strong. Below the photo are the headers of their two papers describing kinetin, the first cytokinin: “Kinetin, a cell division factor from desoxyribonucleic acid” by Carlos O. Miller, Folke K. Skoog, Malcolm H. van Saltza and Frank M. Strong, and “Structure and synthesis of kinetin” by Carlos O. Miller, Folke K. Skoog, Francis Shigeo Okumura, Malcolm H. van Saltza and Frank M. Strong. Both published in 1955 in the Journal of the American Chemical Society.

#PlantScienceClassics #20: Kinetin & Cytokinins. In 1955 Carlos Miller, Folke Skoog & co-workers describe the first #Cytokinin and its role in promoting cell division and growth promotion. #Phytohormones #PlantScience #PlantDevelopment

pubs.acs.org/doi/abs/10.1...
pubs.acs.org/doi/abs/10.1...

cis-Zeatin is an Active Cytokinin that Mediates Gene Expression and Delays Leaf Senescence in Tomato Under Salt Stress

Excited to have our latest work on cis-Zeatin, senescence, and salt in tomato on-line at Journal of Plant Growth Regulation! #cytokinin

Our latest article is out in the Plants special issue www.mdpi.com/journal/plan...

We explore how HD-ZIP II transcription factors shape reproductive development by modulating auxin and cytokinin homeostasis
www.mdpi.com/2223-7747/14...

#Auxin #Cytokinin #HDZIPs-II #PlantDevelopment #OpenAccess

Light quality, cytokinin type, and media affect the regeneration, growth, and fluorescence parameters of Syngonium podophyllum Schott “Emerald Green” in vitro plantlets The light source is a critical factor that influences shoot regeneration in in vitro culture. Using LED spectra is a tool to improve the quality of plant micropropagation. The objective of this stu...

#Light quality, #cytokinin type, & media affect regeneration, growth, & fluorescence parameters of #Syngonium podophyllum 'Emerald Green' in vitro plantlets.
To read this article in JHSB 100:6, visit: doi.org/10.1080/1462...

#Ornamental #micropropagation #Goosefoot #Arrowhead

Text summarising the paper by Hirano et al. and biography of the first author - Tomoko Hirano. Two images inserted, one showing the first author and the other, a photo of the Arabidopsis gall-induction assay with two induced galls highlighted with a white box-frame.

Having the gall to mimic insects... 🪳

Hirano et al. demonstrate how to artificially induce gall-like structures in host plants by applying a new insect-derived peptide in combination with #phytohormones #auxin & #cytokinin

🔗 doi.org/10.1093/pcp/...
🔗 academic.oup.com/pcp/pages/re...

#PlantScience

Very happy to have our latest multi-omics cytokinin work published - "trans-Zeatin N-glucosides Can Delay Salt Accelerated Leaf Senescence in Arabidopsis thaliana" in Plant Physiology and Biochemistry #cytokinin

Hormonal regulation of primary root development Dynamic hormone networks orchestrate Arabidopsis root meristem growth. In this review, Nittis et al. highlight recent advances in how these regulatory systems shape root development and discuss their ...

📜 Hormonal regulation of primary root development

🧑‍🔬 Michela De Nittis, Mirko De Vivo, @raffolab.bsky.social, Sabrina Sabatini

📔 @cp-cellreports.bsky.social

🔗 www.cell.com/cell-reports...

#️⃣ #PlantScience #RootBiology #PlantRoots #Phytohormones #Auxin #Cytokinin #PlantDevelopment

Plant Hormones

📣 Plant Hormones is offering APC #waivers from 2025 to 2027🔥 💯👏🎉

❇️Please consider submitting your relevant work to Plant Hormones

🔗 www.maxapress.com/ph

@mapjournals.bsky.social #hormones #phytohormones #ABA #polyamines #ethylene #cytokinin #melatonin #planthormones @academic-chatter.bsky.social

Leaves of Syngonium podophyllum

#Light quality, #cytokinin type, & media affect regeneration, growth, & fluorescence parameters of #Syngonium podophyllum 'Emerald Green' in vitro plantlets.
To read this new article in JHSB, visit: doi.org/10.1080/1462...

#Ornamental #micropropagation #Goosefoot #Arrowhead

Visiting my dear colleagues at #InstituteofExperimentalBotany #UEB great days spent talking about #phytohormones #auxin #cytokinin #roots #rootphenotyping #rootsoilinteractions #roothairs
@garciagj.bsky.social

📜 Cytokinin: from autoclaved DNA to two-component signaling

🧑‍🔬 Cristiana T. Argueso, Joseph J. Kieber

📔 The Plant Cell

🔗 academic.oup.com/plcell/advan...

#️⃣ (Feeds) #PlantScience #Phytohormones #PlantSciHis #Cytokinin #PlantDevelopment

Senior Author & #Sapienza University of Rome PI 🧑‍🔬 Raffaele Dello Ioio has also arrived on BlueSky:
👉 @raffolab.bsky.social 👈

If you are interested in #Phytohormones #Auxin #Cytokinin and #RootDevelopment, follow him!

Also, to celebrate, there is now a Phytohormone FEED:
bsky.app/profile/did:...