#ABA-mediated
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pierremarcdelaux.bsky.social
The modes of action of ABA receptors is definitely not in an evolutionary stasis! I like how this paper shows that 🌱 evolution is a super dynamic process. 🔽

@currentbiology.bsky.social @jandevries.bsky.social (and others I can't find on bsky!)

www.cell.com/current-biol...
Abscisic acid receptors functionally converge across 500 million years of land plant evolution
Zimran et al. highlight a case of functional convergence in ABA-mediated signaling, which regulates dehydration responses across terrestrial plants: ABA receptors, which evolved from ligand-independen...
www.cell.com
February 3, 2025 at 9:50 AM
biorxiv-plants.bsky.social
NPF4.6-mediated ABA transport modulates stomatal responses to fluctuating light https://www.biorxiv.org/content/10.64898/2025.12.30.697139v1
December 31, 2025 at 7:02 PM
plantphys.bsky.social
Deciphering vital transcription factors in cytokinin- and ABA-mediated postharvest leaf senescence of Brassica rapa (Ze-xiang Zeng (曾泽湘) , Yuan Rong (荣源) , Xiao-lan Wang (汪小兰) , Ya-ting Zhao (赵亚婷) , et al) doi.org/10.1093/plph... #PlantScience @aspbofficial
Deciphering vital transcription factors in cytokinin- and ABA-mediated postharvest leaf senescence of Brassica rapa
Cytokinin and abscisic acid antagonistically regulate transcription factor-mediated reactive oxygen metabolism to control postharvest leaf senescence in Ch
doi.org
July 3, 2026 at 6:29 PM
annmemmott.bsky.social
Oh dear.
Another worrying paper from Autism Journal (National Autistic Society's publication). journals.sagepub.com/doi/10.1177/...
This is an Applied Behaviour Analysis (ABA) paper, funded by Autism Speaks.
It discusses how to stop children running away, dangerously, from caregivers (elopement)/
A Randomized Trial of Caregiver-Mediated Function-Based Elopement Treatment for Autistic Children - Mindy Scheithauer, Joanna Lomas Mevers, Lawrence Scahill, Sarah Slocum Freeman, Colin Muething, Chel...
Elopement is a common and dangerous behavior among autistic children. Behavioral treatments can reduce elopement, but most evidence comes from small-N evaluatio...
journals.sagepub.com
April 5, 2025 at 9:44 AM
mplantpcom.bsky.social
Plant Com Nov 2025 issue online🎉Cover story: Organ-level gene-regulatory networks inferred from transcriptomic data reveal context-specific regulation and highlight novel regulators of ripening and ABA-mediated responses in tomato. Image by Josefa Ormeño. cell.com/plant-commun...
November 15, 2025 at 12:51 PM
danvec.bsky.social
Humidity-driven ABA depletion determines plant-pathogen competition for leaf water

www.nature.com/articles/s41...
Humidity-driven ABA depletion determines plant-pathogen competition for leaf water - Nature Communications
Bacterial pathogens exploit humidity to promote leaf water-soaking and infection. Here Yasuda et al. show that plants counter this by triggering CYP707A3-mediated ABA depletion, yet bacterial effector...
www.nature.com
December 22, 2025 at 11:05 PM
plant-sci.bsky.social
🌱🧬 SnRK2.6 phosphorylates and stabilizes PTRE1, which boosts 26S proteasome activity during ABA signaling. Loss of PTRE1 increases ABI5 levels and enhances ABA sensitivity.

A dual mechanism fine tunes ABA responses #plantscience @mplantpcom.bsky.social
www.cell.com/plant-commun...
SnRK2.6-mediated phosphorylation stabilizes proteasome regulator 1 (PTRE1) to enhance 26S proteasome activity and coordinate ABA signaling in Arabidopsis
This study reports that abscisic acid (ABA) activates sucrose nonfermenting 1-related kinase 2.6 (SnRK2.6), which phosphorylates proteasome regulator 1 (PTRE1) and inhibits its degradation, thereby st...
www.cell.com
June 12, 2026 at 5:54 AM
abioticstress.bsky.social
StALKBH10B-Mediated #RNA m6A Modification Inhibits #Potato #Salt Tolerance by Targeting #Flavonoids and #ABA Signalling #Pathways

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

@plantbiotechj.bsky.social @sebiology.bsky.social @aabiologists.bsky.social @flavonoide.bsky.social @epiplantpath.bsky.social
StALKBH10B‐Mediated RNA m6A Modification Inhibits Potato Salt Tolerance by Targeting Flavonoids and ABA Signalling Pathways
N6-methyladenosine (m6A) is the most prevalent methylation modification present in mRNAs, which has been confirmed to participate in many developmental and biological processes. However, the biologic...
onlinelibrary.wiley.com
March 21, 2026 at 11:10 AM
jxbotany.bsky.social
🥑🌱 RESEARCH 🌱🥑

Immature fruitlet abscission in avocado is mediated by a hormone-driven and transcriptome reprogramming that activates a senescence program of development in the seed coat to trigger abscission - Haberman et al.

🔗 doi.org/10.1093/jxb/...

#PlantScience 🧪
Fig. 9.Differential expression of seed-dormancy signaling genes during fruitlet growth arrest in avocado. (A, B) Representative images of (A) a persisting and (B) a recently abscised fruitlet; EM, embryo; the red arrowhead indicates the seed coat. (C) Schematic diagram of dormancy signaling pathways. (D) Heatmaps of differentially expressed of ABA-associated dormancy-signaling genes in the seed coat, pericarp, and embryo during natural growth arrest (NGA), defoliation-induced early growth arrest (DEGA), and defoliation-induced late growth arrest (DLGA), as described in Fig. 3. (E) Heatmaps of differential expression of FT- and MFT-associated genes. The heatmaps show the log2(fold-change) of expression according to the colour gradient. Genes with a log2(fold-change)≤1 were assigned a value of 0. n=5.
September 30, 2026 at 11:00 AM
plantcellphysiol.bsky.social
HYPNO(S)therapy for bryophytes...

Yoshimura et al. uncover the MpHYPNOS-mediated transcriptional networks controlling gemma dormancy in #Marchantia: ABA-independent & -dependent pathways that suppress germination & enhance desiccation tolerance, respectively

doi.org/10.1093/pcp/...

#PlantScience
graphical abstract showing integrated control of two pathways (ABA-independent and ABA-dependent) by the MpHYPNOS BHLH protein, which collectively regulates gemma dormancy in Marchantia. Image taken from Nami Yoshimura, Hirotaka Kato, Mikako Yoshikawa, Yuuki Sakai, Hideyuki Matsuura, Kosaku Takahashi, Daisuke Takezawa, Takehiko Kanazawa, Tomoyuki Furuya, Takashi Ueda, Yuki Kondo, Hidehiro Fukaki, Kimitsune Ishizaki, Transcriptional control of gemma dormancy via dual pathways in Marchantia polymorpha, Plant and Cell Physiology, Volume 67, Issue 8, August 2026, Pages 1287–1298, https://doi.org/10.1093/pcp/pcag071
September 15, 2026 at 3:27 PM
jxbotany.bsky.social
🧬 SPECIAL ISSUE REVIEW 🧬

Histone H3 methylation plays a critical role in regulating plant responses to abiotic stresses such as drought, salinity, temperature, light, cadmium, and nutrient stress 🧂🌡️☀️💧

📝 Yu et al.

🔗 doi.org/10.1093/jxb/...

#PlantScience 🧪
Fig. 1 (shortened, full legend in paper): The role of H3K4 methylation in regulating plant responses to abiotic stresses. (A) The H3K4 demethylase JMJ17 negatively regulates dehydration responses by modulating OST1 expression and ABA-mediated stomatal closure. Under non-ABA conditions, WRKY40 recruits JMJ17 to the ABI5 promoter to remove the H3K4me3 mark (Huang et al., 2019; T.J. Wang et al., 2021). Upon ABA perception, WRKY40 dissociates, activating ABI5 expression via HY5, thereby enhancing stress adaptation (T.J. Wang et al., 2021). JMJ27 and JMJ29 positively regulate drought-responsive genes, while the histone methyltransferases ATX1 and SDG708 induce NCED gene expression, enhancing drought tolerance (Chen et al., 2021; Q. Wang et al., 2021; J. Zhang et al., 2023). Conversely, ATX4 and ATX5 negatively regulate drought responses by activating AHG3 expression (Liu et al., 2018). (B) JMJ15 represses WRKY46 and WRKY70 during salt stress via H3K4me3 demethylation.
November 8, 2025 at 10:49 AM
tkozawa.bsky.social
Great work by Ma et al. (2025) on how NRT1.1B, a traditionally recognized #nitrate receptor, can directly perceive extracellular #AbscisicAcid (ABA) in a nitrate-antagonistic manner, thus enabling 🌾plants to integrate nutrient and abiotic stress cues (N level & drought)
www.cell.com/cell/fulltex...
Figure 7. NRT1.1B integrates compound environmental signals in plants. (M) A proposed model of nitrate-ABA coordinated responses mediated by NRT1.1B. Under low-nitrate conditions without ABA, NLP4 interacts with SPX4 and is sequestered in the cytoplasm. ABA perception enhances the NRT1.1B-SPX4 interaction, thereby promoting NLP4 release and translocation into the nucleus, and ultimately activates downstream ABA responses. Under high-nitrate conditions, nitrate competes with ABA for NRT1.1B binding, and NRT1.1B shifts to sense the nitrate signal.
August 12, 2025 at 7:24 PM
commsbio.nature.com
Single-cell profiling in rubber tree saplings to water-deficit stress identifies seven bark cell types and ABA-mediated drought responses, including uniform ABF2/3/4 induction.

www.nature.com/articles/s42...
Transcriptomic response analysis of rubber tree saplings to water-deficit stress at single-cell resolution - Communications Biology
Single-cell profiling in rubber tree saplings to water-deficit stress identifies seven bark cell types and ABA-mediated drought responses, including uniform ABF2/3/4 induction.
www.nature.com
November 4, 2025 at 7:37 PM
jxbotany.bsky.social
ABI5, crucial for ABA signalling in seed germination, is negatively regulated by RACK1, which aids ABI5 degradation and suppresses its activity.
#PlantScience 🧪 doi.org/10.1093/jxb/...
Working model for RACK1-mediated regulation of seed germination and the early stages of plant development. In the mature seeds where ABA is highly accumulated, ABI5 is induced and then phosphorylated by SnRK2 kinases to activate downstream signalling to active downstream genes including EM1 and EM6, and to repress RACK1; in the germinating seeds and seedlings where ABA rapidly decreases, RACK1 is induced through an unknown mechanism; increasing RACK1 can interact with phosphorylated ABI5 to reduce transcriptional activity of ABI5. In addition, RACK1 can also interact with DWA1/2, leading to degradation of ABI5 and consequently promotion of seed germination and seedling growth.
June 11, 2024 at 2:31 PM
plantphys.bsky.social
Ethylene-mediated CsWRKY41 regulates the PYL-PP2C module to promote adventitious root formation in cucumber under waterlogging stress (Qiming Hu , Boyan Jin , Yuanyuan Bian , Zhuyuan Yang , Xiaodong Yang , Xuehao Chen , Xiaohua Qi , Xuewen Xu) doi.org/10.1093/plph... #PlantScience @aspbofficial
Ethylene-mediated CsWRKY41 regulates the PYL-PP2C module to promote adventitious root formation in cucumber under waterlogging stress
The Ethylene-responsive WRKY transcription factor CsWRKY41 regulates waterlogging-triggered adventitious root formation in cucumber through the ABA signali
doi.org
September 12, 2026 at 8:47 PM
suaybuestuen.bsky.social
Another piece of the ABA–autophagy puzzle. Here, NBR1-mediated selective autophagy promotes ABI5 turnover to restrict bacterial susceptibility under warming, complementing recent our recent work (www.biorxiv.org/content/10.6...) on autophagic regulation of ABA receptors. ♻️🌱🦠
Selective autophagy promotes bacterial immunity under warming through NBR1-dependent regulation of ABI5
Elevated temperatures compromise plant immunity and increase susceptibility to bacterial pathogens through extensive reprogramming of hormone signaling pathways. Although autophagy contributes to both...
www.biorxiv.org
July 2, 2026 at 3:32 PM
rcsbpdb.bsky.social
Many plant stress responses are mediated by a signaling pathway activated by abscisic acid (ABA), a small-molecule hormone synthesized by plant tissue under drought conditions.
More at September's Molecule of the Month:
PDB101: Molecule of the Month: Abscisic Acid Receptor
Regulating drought tolerance in plants
pdb101.rcsb.org
September 2, 2025 at 3:48 PM
somssich.bsky.social
📜 Abscisic acid receptors functionally converge across 500 million years of land plant evolution

🧑‍🔬 Gil Zimran, Assaf Mosquna, Yufei Sun, et al.

📔 @currentbiology.bsky.social

🔗 www.cell.com/current-biol...

#️⃣ #PlantScience #Phytohormones #PlantEvolution #PlantEvoDevo
Abscisic acid receptors functionally converge across 500 million years of land plant evolution
Zimran et al. highlight a case of functional convergence in ABA-mediated signaling, which regulates dehydration responses across terrestrial plants: ABA receptors, which evolved from ligand-independen...
www.cell.com
February 5, 2025 at 7:54 AM
biorxiv-plants.bsky.social
ABI5-mediated ABA signaling enhances aliphatic glucosinolates biosynthesis by transcriptionally suppressing BR signaling factors in Arabidopsis https://www.biorxiv.org/content/10.64898/2026.03.10.710799v1
March 12, 2026 at 6:03 PM
plantphys.bsky.social
Strigolactones inhibit axillary bud outgrowth through transcription factor MdSPL6-mediated regulation of ABA levels in apple (Xingqiang Fan, Huixia Li, Yao Xiong, Doudou Chen, Yuqing Zhang, Haochen Sun, Yi Wang, Zhenhai Han, Wei Li) doi.org/10.1093/plph... #PlantScience @aspbofficial
Strigolactones inhibit axillary bud outgrowth through transcription factor MdSPL6-mediated regulation of ABA levels in apple
Strigolactones inhibit apple axillary bud outgrowth by promoting MdSPL6-dependent activation of MdHB53 and MdTCP18, which elevates ABA levels and defines a
doi.org
November 24, 2025 at 5:47 PM
natplants.nature.com
New Article: "N6-methyladenosine-mediated feedback regulation of abscisic acid perception via phase-separated ECT8 condensates in Arabidopsis" rdcu.be/dAvYN

In response to ABA, m6A reader ECT8 sequesters m6A-modified ABA receptor PYL7 mRNA in stress granules. #PlantScience
March 6, 2024 at 4:39 PM
mplantpcom.bsky.social
Organ-level gene regulatory networks inferred from transcriptomic data reveal context-specific regulation and highlight novel regulators of ripening and ABA-mediated responses in tomato #resource #PlantCommunications cell.com/plant-commun...
September 4, 2025 at 12:42 PM
newphyt.bsky.social
StHAB1-mediated ABA signaling potentiates the sensitivity to long-distance signal StSP6A to promote tuberization in potato

Wang et al.

nph.onlinelibrary.wiley.com/share/VDSQCB...
Proposed model for StHAB1 participating in potato (Solanum tuberosum) development.
February 17, 2026 at 7:35 AM
rnamod.bsky.social
Cellular signal-responsive m5C editing by an inducible split CRISPR platform

RNA (New York, N.Y.) · Dong et al.
doi.org/10.1261/rna.081049.126
#RNAsky #RNAmods
Cellular signal-responsive m5C editing by an inducible split CRISPR platform
Here, we present a temporally and conditionally controlled m⁵C writing platform engineered through integrating abscisic acid (ABA)-mediated chemically induced proximity with split-dCas13b-NSUN2/NSUN6 technology.
doi.org
September 2, 2026 at 9:07 PM
nacholescano.bsky.social
7/7
💡 Our results identify NBR1-mediated degradation of ABI5 as a temperature-dependent mechanism that restrains ABA-associated susceptibility to maintain immunity under warming
📷Working model below ⬇️
🌱Comments and feedback are very welcome!
Great teamwork from everyone ! 😊
July 2, 2026 at 3:06 PM