#arabidopsis — Public Fediverse posts

Liao et al. identify CycC1;1 as a -ve regulator of JA-induced #leaf senescence in #Arabidopsis, physically interacting with MYC2 in the nucleus to inhibit MYC2-mediated transcriptional activation of senescence-associated #genes.
https://doi.org/10.1111/jipb.70378
@WileyLifeSci
#PlantSci #botany

Alarm in der Wurzel

Wurzeln sind im Boden gut verborgen, aber keineswegs vor Angriffen geschützt. Insektenlarven oder Nematoden können sie verletzen und sich anschließend weiter durch das Wurzelsystem bewegen.

Für die Pflanze ist es deshalb sinnvoll, nicht nur am Ort der Verletzung zu reagieren, sondern auch benachbarte, noch unbeschädigte Wurzeln auf die mögliche Gefahr vorzubereiten. Wie die Information über eine Verletzung innerhalb des Wurzelsystems weitergegeben wird, war bislang allerdings nicht so gut verstanden.

Ein Forschungsteam der Uni Würzburg hat diesen Signalweg nun an der Ackerschmalwand Arabidopsis thaliana untersucht. Dafür verletzten die Forschenden einzelne Zellen oder größere Bereiche einer Seitenwurzel und zeichneten unter anderem elektrische Veränderungen und Kalziumsignale auf.

Dabei zeigte sich ein erstaunlich schneller Übertragungsweg. Durch die Verletzung fällt der Druck in den Zellen ab. Dieser Druckverlust breitet sich durch das verbundene Wurzelsystem aus und erreicht benachbarte Seitenwurzeln mit rund 75 Millimetern pro Sekunde.

Dort reagieren sogenannte mechanosensitive Ionenkanäle (z.B. MCA1) auf die Druckänderung. Die mechanische Reizung führt also zu einer Öffnung dieser Kanäle und einem entsprechenden Einstrom von Kalzium (Ca2+). Diese positive Ladung führt zu einer Aktivierung von Prozessen in der Zelle, die letzlich unter anderem zu einer Aktivierung von Genen für Abwehrreaktionen führen.

Auf diese Weise kann eine Verletzung auch in noch unbeschädigten Nachbarwurzeln Reaktionen auslösen und sie damit quasi vorsorglich auf eine drohende Gefahr vorbereiten.

Quelle:
Baudon et al. (2026), Science Advances, „MCA1 mechanosensitive channels enable fast communication of wound signals between lateral roots“

https://www.science.org/doi/epdf/10.1126/sciadv.aef2202

#arabidopsis #biologie #uniwürzburg #science #wissenschaft #wisskomm #anysci

"DBCLS BioHackathon 2026 report: QPX: Pathway analysis environment for non-model organisms" https://doi.org/10.37044/osf.io/7egfm_v1

#biohackathon #pathway #bioinformatics #BH26JP #rice #arabidopsis

"We report progress on Quest for Pathways with eXpression (QPX), a pathway analysis environment for non-model organisms, developed during the DBCLS BioHackathon 2026 (BH26). Building on prior BH23/BH25 work, we demonstrated PathLift, a tool that lifts WikiPathways GPML pathways to other species via ortholog mapping, using an Arabidopsis-to-rice mitochondrial complex I example." https://index.biohackrxiv.org/2026/09/19/7egfm.html

The growth of #plant leaves is highly dynamic and should be coordinated, but how is #leaf flatness preserved? @roederlab &co show that global coordination of growth across the leaf blade is required to maintain flatness in #Arabidopsis @PLOSBiology https://plos.io/3SZH0Gv

#Arabidopsis E3 ligase SNIPER8 promotes TPR1 turnover--regulation that's essential for maintaining #plant immune homeostasis and preventing autoimmune activation.

Read the full paper here--it's #OpenAccess!
https://doi.org/10.1111/jipb.70341
@WileyLifeSci

@ubcmsl
#PlantScience

Want to up your tissue culture game?🤔
🔎Hu et al. have the solution you've been looking for.

Their latest paper in #JIPB describes a CLE–RLK–LBD signaling module that promotes de novo shoot regeneration in #plants.
https://doi.org/10.1111/jipb.70300
@WileyLifeSci
#PlantSci #Arabidopsis

This study by Zheng et al. reveals an #evolutionarily conserved mechanism in which MBD8 orthologs act as cofactors of LDL2 orthologs to regulate histone demethylation and flowering time in #plants.
#Arabidopsis #rice #genes
https://doi.org/10.1111/jipb.70321
@WileyLifeSci
#PlantSci #JIPB #botany

Chinese scientists discover molecular amplifier that tunes plants' temperature response

https://1ban.news/thermomorphogenesis-arabidopsis-bzr1-blh1-pif4/
#1ban #thermomorphogenesis #arabidopsis #bzr1 #blh1 #science

New work by Walia et al. on #Arabidopsis InsP-kinases IPK1 and ITPK1, reveals that specific InsP-kinases are partly involved in modulating #plant PSR by fine-tuning the coordination between CRL and CSN activities.
https://doi.org/10.1111/jipb.70268
@WileyLifeSci
#PlantSci #JIPB #CellBiology #botany #OpenAccess

trigolactones are crucial endogenous #plant hormones that control #environmental #adaptation.
New work from Huang et al. improves our understanding of the players in SL-mediated #gene expression and plant #development.
https://doi.org/10.1111/jipb.70281
@WileyLifeSci
#Arabidopsis #JIPB #botany

The #Arabidopsis chaperonin CCT complex subunit CCT8 coordinates #cell division in the root meristem by regulating SEC31B abundance--modulating COPII-mediated trafficking of PIN proteins to support root #growth.
https://doi.org/10.1111/jipb.70277
@WileyLifeSci
#PlantSci #JIPB #development #bot

Peng et al. characterize #Arabidopsis SEC23A, a COPII complex component that mediates membrane trafficking b/t the endoplasmic reticulum and the Golgi apparatus, as a novel interactor of SIGMA FACTOR-BINDING PROTEIN 1 (SIB1).
https://doi.org/10.1111/jipb.70251
@WileyLifeSci
#PlantSci #JIPB #botany #OpenAccess

Wu et al. discuss recent work on systemic stomatal immunity (SSIM), a fast-acting, targeted #plant #defense mechanism in which #pathogen challenge triggers distal stomatal closure within hours.

https://doi.org/10.1111/jipb.70245
@WileyLifeSci
#PlantSci #JIPB #Arabidopsis #PlantPathology #botany

This study by Peng et al. highlights the potential use of 12-HOLA as a natural #plant growth regulator and marks the organ size regulator enzyme gene CYP78A9 as a target for #gene editing and #molecular breeding.
https://doi.org/10.1111/jipb.70243
@WileyLifeSci
#PlantSci #JIPB #Arabidopsis #botany

🛡️Xu et al. reveal a striking #evolutionary divergence in the regulatory mechanisms of salicylic acid #biosynthesis between N. benthamiana and #Arabidopsis.
⬇️Get a free sneak peek at this new work right here!
⚔️https://doi.org/10.1111/jipb.70214
@WileyLifeSci
#PlantScience #CropSci #JIPB

🌡️When the going gets🥵hot...GUN1 gets going.

🌱GUN1 helps relay heat-related cues to maintain #chloroplast biogenesis and support thermotolerance during early seedling #growth in #Arabidopsis.

🔗https://doi.org/10.1111/jipb.70127
@WileyLifeSci
#PlantSci #JIPB #ClimateEmergency #botany #OpenAccess

Large-scale ID of PPIs is an important focus of modern biological research.
New work by Huang et al. demonstrates the power of touch-down overlapping PCR coupled with HiFi long-read sequence (TDOP-seq).
https://doi.org/10.1111/jipb.70107
@WileyLifeSci
#PlantScience #Arabidopsis #rice #JIPB #botany

Ceramide synthases are crucial to sphingolipid #biosynthesis and multiple aspects of #plant #development and #pathogen #immunity.
In a fascinating new study, Zhang et al. explore regulation of CerS activity in #Arabidopsis.
🔗https://doi.org/10.1111/jipb.70081
@WileyLifeSci
#PlantSci #botany

#Arabidopsis root growth is known to be suppressed under low Pi conditions. Here, Zhang et al. report that this #growth inhibition is caused by the collapse of #auxin transport in the presence of accumulated iron.
https://doi.org/10.1111/jipb.70090
@WileyLifeSci
#PlantSci #JIPB #physiology #botany

Histone variant H3.14 responds to abiotic stress in Arabidopsis:
🌱 H3.14 expressed in root transition zone
🔬 Dual role: activates stress genes, represses
More at https://tnyp.me/S0eSd1Ut/m
#Arabidopsis #StressResponse #Chromatin #H3Variant #Pub2Post

H3.14's key role in Arabidopsis stress response:
🌱 H3.14 facilitates chromatin remodeling under stress
🌿 Exhibits unique binding in root transition zone
🧬 Initiates stress gene activation & growth gene repression
#Arabidopsis #StressResponse #Chromatin #H3.14 #Pub2Post https://tnyp.me/S0eSd1Ut/m

H3.14's key role in Arabidopsis stress response:
🌱 H3.14 facilitates chromatin remodeling under stress
🌿 Exhibits unique binding in root transition zone
🧬 Initiates stress gene activation & growth gene repression
#Arabidopsis #StressResponse #Chromatin #H3.14 #Pub2Post https://tnyp.me/S0eSd1Ut/m

H3.14's key role in Arabidopsis stress response:
🌱 H3.14 facilitates chromatin remodeling under stress
🌿 Exhibits unique binding in root transition zone
🧬 Initiates stress gene activation & growth gene repression
#Arabidopsis #StressResponse #Chromatin #H3.14 #Pub2Post https://tnyp.me/S0eSd1Ut/m

H3.14's key role in Arabidopsis stress response:
🌱 H3.14 facilitates chromatin remodeling under stress
🌿 Exhibits unique binding in root transition zone
🧬 Initiates stress gene activation & growth gene repression
#Arabidopsis #StressResponse #Chromatin #H3.14 #Pub2Post https://tnyp.me/S0eSd1Ut/m

H3.14's key role in Arabidopsis stress response:
🌱 H3.14 facilitates chromatin remodeling under stress
🌿 Exhibits unique binding in root transition zone
🧬 Initiates stress gene activation & growth gene repression
#Arabidopsis #StressResponse #Chromatin #H3.14 #Pub2Post https://tnyp.me/S0eSd1Ut/m

MAPK cascades help regulate #plant #growth, #development, and #stress responses.
In a new study published in #JIPB, Cai et al. reveal the function of a MAPKKK18–MAPKK3–MAPK1/2/7/14 module to regulate flowering time in #Arabidopsis.

https://doi.org/10.1111/jipb.70073
@WileyLifeSci
#PlantSci #botany

Now that we're all on the same wavelength...

New findings by Shi et al. 💡illuminate💡the pathway through which blue #light influences the #circadian #clock via the CRY2–PRR5 module😉

⏰https://doi.org/10.1111/jipb.70058

@WileyLifeSci
#PlantSci #development #Arabidopsis #cryptochrome #botany

GIGANTEA acts as a dynamic #signal integrator, integrating #environmental cues like temperature and photoperiod to regulate circadian control as well as flowering and #stress responses in #Arabidopsis.
https://doi.org/10.1111/jipb.70051
@WileyLifeSci
#PlantSci #growth #development #botany

Wu et al. use cryo-electron microscopy of a 1.4-MDa PSII-LHCII dimer and a 2.8-MDa tetramer in #Arabidopsis to gain insights into the dynamic assembly and excitation #energy redistribution within PSII arrays in higher #plants.
https://doi.org/10.1111/jipb.70045
@WileyLifeSci
#PlantSci #JIPB

Researchers studied #Arabidopsis to understand how plants adapt to fluctuating #boron levels, identifying genes linked to efficient nutrient uptake. Findings may support breeding resilient #rapeseed: http://go.tum.de/797069

#PlantGenetics

📷A. Heddergott

This #OA study by Nguyen et al. reveals a regulatory mechanism integrating cold signaling and #auxin response in the control of CRF3 expression in #Arabidopsis.

🪩https://doi.org/10.1111/jipb.70039

@WileyEcology
#PlantScience #JIPB #AbioticStress #ColdStress #plant #PlantHormones #hormone #botany #OpenAccess

Tang et al. characterize a previously unrecognized signaling module comprising OST1–MAP4K1/2–AHA2/SLAC1, which crucially modulates #ABA-mediated stomatal regulation in #Arabidopsis.

👄 https://doi.org/10.1111/jipb.70030

@wileyplantsci
#PlantScience #stress #water #plants #JIPB #botany

Wang et al. report that CLE19 suppresses brassinosteroid signaling output via the BSL-BIN2 module to maintain BES1 activity and #pollen exine patterning in #Arabidopsis.

🌺https://doi.org/10.1111/jipb.70024

@wileyplantsci
#PlantScience #plant #reproduction #hormone #OpenAccess #botany

A mystery 30+ years in the making!

In this #OpenAccess Brief Report, Wu et al. describe a novel physiological function of the #Arabidopsis
PPRD1 in #brassinosteroid #biosynthesis, and new possibilities for alternative #steroid reductases involved in steroid #metabolism.

🌱 https://doi.org/10.1111/jipb.70022

#PlantSci

💡Lee et al. demonstrate that the bZIP3 #transcription factor is important for CO-induced FT expression under long #photoperiod conditions in #Arabidopsis.

📑Read this #OpenAccess paper-and more-here!

➡️https://doi.org/10.1111/jipb.70014

🔗
@wileyplantsci
#PlantScience #JIPB #flowering #botany

The histone variant H3.14 is an early player in the abiotic stress response of Arabidopsis.

#Epigenetics #HistoneMarks #HistoneVariants #AbioticStress #Arabidopsis #PlantScience

https://www.sciencedirect.com/science/article/pii/S1534580725003740

Plants repress ROS1 expression to attenuate heat-induced transposon burst.

#Transposons #Retrotransposons #ROS1 #RepressorOfSilencing1 #HeatStress #ONSEN #Arabidopsis #PlantScience

https://www.nature.com/articles/s41477-025-02076-9

T-DNA insertions: more surprises than you think 🌱🧬.
PCR can miss extra T-DNAs & complex rearrangements. Long-read sequencing captures the full picture. Still super relevant for plant genomics!
🔗 https://doi.org/10.1186/s12864-021-07877-8
#PlantScience #Genotyping #LongReadSequencing #Arabidopsis @PuckerLab

Photoperiod sensitivity affects #flowering time and, ultimately, #yield. Wang et al. reveal new insights into how the LUX-SWI3C module regulates #photoperiod sensitivity in #Arabidopsis at the #epigenetic level.
https://doi.org/10.1111/jipb.13889
@wileyplantsci
#PlantSci #JIPB #botany

Long-read detection of transposable element mobilization in the soma of hypomethylated Arabidopsis thaliana individuals.

#Transposons #SomaticTransposition #Hypomethylation #MET1 #Arabidopsis #LongReadSequencing

https://link.springer.com/article/10.1186/s13059-025-03691-7

More #free #PlantScience? We thought you'd never ask!
Get a sneak peek at this remarkable work by Zhang et al. that reveals how scaffold #protein RACK1 regulates #root #growth and gravitropic response.
🔓👇
https://doi.org/10.1111/jipb.13858
@wileyplantsci
#JIPB #auxin #Arabidopsis #botany

Previous studies of extrachromosomal circular DNA #eccDNA in #plants are based on short-read seq. @vanderschuren-lab.bsky.social uses long-read seq to obtain a map of full-length eccDNAs from #Arabidopsis, identifying their genomic origins & epigenetic regulation @PLOSBiology plos.io/44Mq3RI

A plant's #microbiome can protect it against detrimental bacterial strains. This study shows that competition among #Pseudomonas #bacteria in synthetic bacterial communities determines how well they can protect #Arabidopsis; a single competitive strain can suffice @PLOSBiology https://plos.io/4o96mN1

In the greenhouse, #Arabidopsis with hyperactive ACD6 have stronger pathogen defenses but are smaller & make fewer seeds. @derekseveri @plantevolution &co show that in the open field both advantages & disadvantages of the allele disappear @PLOSBiology https://plos.io/465XPDR

And it gets a bonus point for discussing its genome and referencing The Arabidopsis Information Resource (TAIR).

#ArabidopsisThaliana #Arabidopsis

The FLC gene helps determine #FloweringTime variation in #Arabidopsis. Analysis of FLC mutants across 62 natural #genetic backgrounds shows how pan-genetic analysis of hub genes can reveal the extent of their broader genetic network @PLOSBiology https://plos.io/3ZkZNvV

Organisms have evolved complex and sophisticated #DNA damage response (DDR) mechanisms. In a new #JIPB Brief Comms feature, Yang et al. report on their efforts to identify new DDR regulators in plants
https://doi.org/10.1111/jipb.13910
@wileyplantsci
#PlantSci #Arabidopsis #clathrin #botany #endocytosis

New paper in MBE by Pfalz et al - genetic variation at a near-cryptic QTL for defense metabolites in Arabidopsis is shaped by balancing selection and ectopic gene conversion among duplicated O-methyltransferase genes.

🔗 https://doi.org/10.1093/molbev/msaf086

#evobio #molbio #arabidopsis #crisprcas9

This new #JIPB paper by Xu et al. illustrates the role of the SPL10–REV module in orchestrating #leaf curvature and the potential use in #molecular #breeding of #economically important traits in #vegetable #crops.
https://doi.org/10.1111/jipb.13893
@wileyplantsci
#PlantSci #Arabidopsis #Botany

Expression quantitative trait locus (eQTL) mapping studies are limited by the need to study a large number of individuals. This study develops a method to scale up #eQTL studies by performing single-nucleus #RNAseq of #Arabidopsis pollen @PLOSBiology https://plos.io/4jPZOzD

Discovery of compounds that delay #flowering could boost #crop yields.

#food_security #development #devernalizers #FLOWERING_LOCUS_C_gene #signalling #epigenetic #Arabidopsis

https://phys.org/news/2025-03-discovery-compounds-delay-boost-crop.html

How #nitrate overcomes #plant #hormone inhibition to boost #seed #germination.

#ABA #Arabidopsis #NLP_8 #signalling

https://phys.org/news/2025-03-nitrate-hormone-inhibition-boost-seed.html

How #light and #epigenetics cooperate to regulate #plant #growth.

#gene_expression #H3K27me3 #gene_silencing #Arabidopsis #phyB #hypocotyl #elongation

https://phys.org/news/2025-03-epigenetics-cooperate-growth.html

The #protein that helps #plants survive the #cold.

#crop_resilience #cryobiology #PORCUPINE #RNA_splicing #arabidopsis #SmE1_splicing

https://phys.org/news/2025-03-protein-survive-cold.html

Detailed analysis of #GORK #channel offers insights into #plant #water #regulation.

#stomata #Arabidopsis #potassium_channel #transmembrane_pore #VSD #cytosolic_C_linker #CNBHD #ankyrin #ANK

https://phys.org/news/2025-02-analysis-gork-channel-insights.html

6. 7/8 🌐📚 Future prospects: there was so little biochemical data for our specific proteins, we had to rely on genome-wide data (PBMs). We could then estimate Kd for ANY sequence. That means, also for sequence variants.

Our earlier Framework Model v2 (FMv2) and FM-Life models link the clock right up, through plant metabolism, growth, development and physiology, to seed-to-seed adaptation in real weather.

Anyone who assembles these parts gets to predict how an Arabidopsis genome sequence variant will be adapted to climatic conditions. With a full causal chain. The mechanisms of evolutionary adaptation.👀 #GoForIt

Sure it’s simplified and there’s much to validate but it’s there. DNA-binding Kd is just where we started, there’s more known biochemistry to add.

#Evolution #LifeCycle #QuantitativeBiology #Arabidopsis

How about some #free #PlantScience for your Friday?
In this sneak peek of their new study, Zhang et al. reveal how scaffold protein RACK1 regulates #root #growth and gravitropic response.
🔓👇
https://doi.org/10.1111/jipb.13858
@wileyplantsci
#JIPB #auxin #Arabidopsis #PINOID #botany

#CRISPR manipulation of #UFO #gene reveals complex #plant #flowering dynamics.

#Solanum #Arabidopsis #cis_regulatory_DNA

https://phys.org/news/2025-02-crispr-ufo-gene-reveals-complex.html

#FreeAccess...for a limited time!
Don't miss this sneak peek of a new study by Zhang et al. that uses an optimized #CRISPR/Cas9 system to create new #Brassica lines with broad-spectrum #PowderyMildew resistance!
https://doi.org/10.1111/jipb.13842
@wileyplantsci
#PlantSci #JIPB #Arabidopsis #botany

Intriguing: modeling and empirical data support that after whole genome duplication (autotetraploids) genetic variation rises, and mutation load increases because deleterious mutations are masked by additional chromosome copies
https://www.biorxiv.org/content/10.1101/2025.01.12.632621v1
#WholeGenomeDuplication #paralog #MolecularEvolution #PopulationGenetics #Arabidopsis