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International Society for Plant Low Oxygen Research

@isplore

International Research Community interested in Plant Responses to Hypoxia & Flooding www.isplore.org

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Posts 14.11.2024
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Latest posts by International Society for Plant Low Oxygen Research @isplore

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What features are required to shape hypoxic niches enclosing meristems? We @viktoriiavoloboeva.bsky.social in collab @pieterverboven.bsky.social found that a combination of cuticle barrier, densely packed tissue and metabolic activity all uniquely contribute to maintain shoot apical meristem hypoxia

10.03.2026 15:49 👍 6 🔁 4 💬 2 📌 2
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Toward Dual-Stage Flood Resilience: Merging Anaerobic Germination and Submergence Tolerance in Rice Abstract. Flooding threatens rice (Oryza sativa L.) during the germination/establishment and vegetative growth stages. Rice mitigates these hazards via two

doi.org/10.1093/jxb/... #plantscience

03.03.2026 10:58 👍 2 🔁 2 💬 0 📌 0
Redirecting

The hypoxic niche enclosing the shoot apical meristem is shaped by a combination of morphological features and metabolic activity

doi.org/10.1016/j.mo... #plantscience

03.03.2026 10:32 👍 2 🔁 0 💬 0 📌 0
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Switching on and off the hypoxic response in plants Abstract. Hypoxia significantly impacts plant metabolism and growth by disrupting mitochondrial respiration, and oxygen sensing plays a vital role in regul

Happy to see our review online in @jxbotany.bsky.social 🌱

In this work, we provide an overview of the molecular mechanisms plants use to survive under low oxygen stress and during recovery after reoxygenation 🌊

doi.org/10.1093/jxb/...

25.02.2026 16:11 👍 9 🔁 6 💬 0 📌 0
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Chloroplast differentiation in epidermal cells: an environmental response supporting submerged photosynthesis in Rorippa aquatica While the epidermal cells of terrestrial plants typically lack chloroplasts, this is not the case for aquatic plants, a trait that likely evolved to enhance photosynthetic efficiency underwater. Amp...

nph.onlinelibrary.wiley.com/doi/10.1111/...
#plantscience

18.02.2026 06:10 👍 2 🔁 1 💬 0 📌 0
Functional divergence of the Arg/N-degron pathway between the crop Brassica rapa and the model plant Arabidopsis thaliana The ubiquitin-dependent Arg/N-degron pathway relates the stability of a substrate protein to the nature of its N-terminal amino acid residue or its biochemical modifications, with some N-terminal residues being recognized by specific E3 ubiquitin ligases, resulting in the ubiquitylation and degradation of the substrate protein. Work in the model plant Arabidopsis thaliana has shown that the Arg/N-degron pathway is a key regulator of plant responses to hypoxia, which can be either physiological or a stress in the context of waterlogging or submergence. The role of the Arg/N-degron pathway in hypoxia response is mediated via the oxygen-dependent degradation of group VII ETHYLENE RESPONSE FACTOR (ERFVII) transcription factors, which act as the master regulators of the hypoxia response program in plants. Analysis of Arabidopsis mutants for different enzymatic components of the Arg/N-degron pathway has also revealed its roles in the regulation of responses to other abiotic stresses (e.g. salt stress), as well as to pathogens. Although much has been learned from studies in Arabidopsis about the functions of the Arg/N-degron pathway, very little is known about this pathway in crops, including in Brassica crops such as oilseed rape, cabbage or turnip. To determine functional similarities and divergence of the Arg/N-degron pathway between Arabidopsis and Brassica crops, we isolated and characterized the first Arg/N-degron pathway mutants in Brassica rapa (turnip, pak choi), a diploid Brassica crop closely related to oilseed rape. We focused on two enzymatic components, namely the arginine-transferases ( ATE s) and the E3 ubiquitin ligase PROTEOLYSIS6 ( PRT6 ). Our results show both similarities and divergence of function for these Arg/N-degron pathway components in B. rapa compared to Arabidopsis. Specifically, ATE mutants in B. rapa arrest their development at the seedling stage, which contrasts with the mild phenotypic defects of the equivalent Arabidopsis mutants. Double mutant lines for two of the three PRT6 genes in B. rapa indicated a constitutive activation of hypoxia response genes at the transcriptional level, as shown in the single prt6 mutant in Arabidopsis. However, contrary to Arabidopsis, the B. rapa double mutants were more sensitive to waterlogging and hypoxia, and did not show differential response to salt stress or to biotic stress compared to the wild type. The functional divergence identified likely reflects variability in each species in the substrate repertoire and/or in the regulation of pathways or targets downstream of Arg/N-degron pathway substrates. Such differences could be driven by direct selective pressures at N-termini (e.g. gain or loss of a destabilizing N-terminal residue), or by species-specific proteases that may generate destabilizing neo-N-termini after cleavage. These similarities and differences highlight the difficulties in translating research findings from Arabidopsis to crops, even within the same plant family (Brassicaceae) and highlight the need to study pathways in crops. ### Competing Interest Statement The authors have declared no competing interest. Science Foundation Ireland, https://ror.org/0271asj38, 13/IA/1870, 20/FFP-P/8433 Irish Research Council, https://ror.org/051xex213, GOIPG/2017/2

Protein degradation in Turnip - an adapted Arg/N-degron pathway. Preprint from Brian Mooney et al. Emmanuelle Graciet lab. www.biorxiv.org/content/10.6...

30.01.2026 14:09 👍 6 🔁 5 💬 0 📌 0
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@ScienceAdvances @science.org

Using MAPPI for real-time whole-plant imaging, we reveal the earliest flooding response — a Ca²⁺ signal, expected, yet now directly visualised and strongest in young leaves...🔬📷

science.org/doi/10.1126/...

02.02.2026 06:40 👍 9 🔁 3 💬 0 📌 0
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1-Aminocyclopropane-1-carboxylic acid oxidase determines the fate of ethylene biosynthesis in a tissue-specific way The production of the plant hormone ethylene is controlled by the biosynthesis enzye ACO in a tissue-specific way, which modulates plant development and st

doi.org/10.1093/plph... #plantscience

01.02.2026 15:27 👍 6 🔁 6 💬 0 📌 0
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MITOGEN‐ACTIVATED PROTEIN KINASE9 fine‐tunes hypoxia signaling by phosphorylating ERF‐VII transcription factors in Arabidopsis In plants, hypoxia sensing is controlled by the stabilization of group VII ethylene response factors (ERF-VIIs), which are post-translationally activated by the mitogen-activated protein kinases (MA...

nph.onlinelibrary.wiley.com/doi/10.1111/... #plantscience

31.01.2026 13:23 👍 7 🔁 4 💬 0 📌 0
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NEW – Climate change and La Niña made ‘devastating’ southern African floods more intense | @ayeshatandon.carbonbrief.org @yaninequiroz.bsky.social

Read here: buff.ly/ksNRUK1

29.01.2026 04:00 👍 20 🔁 10 💬 0 📌 0
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Extreme rainfall over land exacerbated by marine heatwaves - Nature Communications This study shows that oceanic extreme warm events, termed marine heatwaves, exacerbate extreme rainfall over land by 20–30%, increasing flood risks for coastal regions.

New study shows that #marine #HeatWaves exacerbate extreme #rainfall over land by 20–30%, increasing #flood risks for #coastal regions. www.nature.com/articles/s41...

26.01.2026 09:48 👍 11 🔁 6 💬 0 📌 0

From root death to repatterning.
Today we heard @kevindaniel.bsky.social (from @hartman-plantlab.com) talk about Arabidopsis root shape plasticity under waterlogging stress.

Curious to hear more? You’ll have another chance next week at the ISRR Symposium.

📅 Jan 23 | 🕥 10:15
#PlantScience

23.01.2026 13:00 👍 12 🔁 8 💬 0 📌 0
PNAS Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

Plastid-to-nucleus communication under hypoxia involves group VII ethylene response factors in Arabidopsis thaliana
#plantscience

www.pnas.org/doi/abs/10.1...

19.01.2026 10:14 👍 5 🔁 1 💬 0 📌 0
Fig. 2.Generation of double LDH mutants. (A) Schematic representation of the two LDH proteins. The genomic region represented by the dotted line is the target of genome editing. (B, C) Selected double LDH mutants generated from the WT (line A) and the las3 mutant (line G) are shown. The genotypes of plants regenerated from transformed calli (T0 generation) are shown with waveform data from sequencing analysis.

Fig. 2.Generation of double LDH mutants. (A) Schematic representation of the two LDH proteins. The genomic region represented by the dotted line is the target of genome editing. (B, C) Selected double LDH mutants generated from the WT (line A) and the las3 mutant (line G) are shown. The genotypes of plants regenerated from transformed calli (T0 generation) are shown with waveform data from sequencing analysis.

🌾⚠️ RESEARCH ARTICLE ⚠️🌾

Analyses of multiple mutants of anaerobic metabolism enzymes demonstrated that defects in ethanol fermentation reduce arsenic levels in rice and identified a new low-arsenic rice - Hayashi et al.

🔗 doi.org/10.1093/jxb/...
#PlantScience 🧪

18.01.2026 09:12 👍 17 🔁 5 💬 0 📌 0

bsky.app/profile/newp...

07.01.2026 13:54 👍 3 🔁 0 💬 0 📌 0

Happy New Year! 2026 starts with 2 #plantscience single cell / nuclei papers describing hypoxia responses in Arabidopsis shoot and root tissues 🌱 bsky.app/profile/thep...

07.01.2026 13:53 👍 4 🔁 0 💬 1 📌 0
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New in Science of Plants: "Inferring hypoxia-responsive regulators of cell fate in plant meristems throughsingle-cell transcriptomics" rdcu.be/eXYvw

07.01.2026 11:49 👍 16 🔁 7 💬 0 📌 1
Hormone biosynthesis and signaling is altered by hypoxia in Arabidopsis thaliana roots.

Hormone biosynthesis and signaling is altered by hypoxia in Arabidopsis thaliana roots.

Discrete and cell-specific hypoxic responses in Arabidopsis roots resolved by single-nuclei transcriptomics

Hill et al.

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

07.01.2026 02:45 👍 18 🔁 10 💬 0 📌 1
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The convergent genomic dynamism for aquatic adaptation in vascular plants Chen et al. reveal accelerated evolutionary rates and substantial gene family co-expansions, not just losses, as convergent dynamism for aquatic plant adaptation and highlight divergent transcriptiona...

www.cell.com/current-biol...

05.01.2026 18:55 👍 2 🔁 0 💬 0 📌 0
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Heat stress accelerates the development of hypoxia and hypoxia-induced ferroptosis-like cell death in barley root tip under waterlogging The root tip is extremely sensitive to waterlogging, where the hypoxic conditions evoke an extensive cell death within a few hours. Using a pharmacolo…

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

04.01.2026 12:38 👍 1 🔁 0 💬 0 📌 0
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Molecular mechanisms and adaptive strategies for hypoxia tolerance in horticultural crops: beyond model systems - Horticulture Advances Waterlogging-induced hypoxia threatens horticultural crop production by disrupting metabolic processes, nutrient uptake, and plant health. Despite significant progress in model plants, such as Arabido...

Happy to share the new insights of our group.
@ateeqmuhammad.bsky.social @isplore.bsky.social
#plantscience

20.12.2025 07:05 👍 7 🔁 2 💬 0 📌 0
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A cis-regulatory element of the PHYTOCHROME A gene confers the submergence escape capacity for amphibious plants - Nature Communications How did amphibious plants evolve the convergent strategy to escape submergence by fast shoot elongation? Yang et al. reveal the pivotal role of a cis-regulatory element in the PHYA promoter in promoti...

Cool paper #plantscience
www.nature.com/articles/s41...

16.12.2025 20:09 👍 13 🔁 6 💬 0 📌 0
Validate User

doi.org/10.1093/plph...

13.12.2025 16:01 👍 0 🔁 0 💬 0 📌 0
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End of the year celebrations with lab 🎄🎊

13.12.2025 09:19 👍 31 🔁 3 💬 0 📌 1

Functional divergence of the Arg/N-degron pathway between the crop Brassica rapa and the model plant Arabidopsis thaliana https://www.biorxiv.org/content/10.64898/2025.12.04.692320v1

09.12.2025 06:02 👍 9 🔁 5 💬 0 📌 0
Fig. 1.Heat plot showing the distribution of concentration for identified sugars (A), organic acids (B), and amino acids (C) with more than 2-fold difference between three tissues at the beginning of the incubation period (t=0 h). The scale for each plot ranges from 1/4.5 to 2.5 times the mean of the metabolite concentration in the three tissues. Tissues not measured are marked in grey.

Fig. 1.Heat plot showing the distribution of concentration for identified sugars (A), organic acids (B), and amino acids (C) with more than 2-fold difference between three tissues at the beginning of the incubation period (t=0 h). The scale for each plot ranges from 1/4.5 to 2.5 times the mean of the metabolite concentration in the three tissues. Tissues not measured are marked in grey.

⬇️ SPECIAL ISSUE RESEARCH ⬇️

🍅 Hypoxia in red tomato fruit enhances glycolysis, fermentation, GABA shunt, & accumulation of alanine & glycine, with columella tissue showing the highest metabolic activity & sensitivity to low oxygen stress- Li et al.

🔗 doi.org/10.1093/jxb/...
#PlantScience 🧪

02.12.2025 08:49 👍 10 🔁 4 💬 1 📌 0
Redirecting

Our latest publication
Physiological and transcriptomic dissection of submergence tolerance in cabbage highlights ERF-VII and N-degron regulation
doi.org/10.1016/j.en...

02.12.2025 05:35 👍 3 🔁 3 💬 0 📌 0
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Future extreme precipitation amplified by intensified mesoscale moisture convergence - Nature Geoscience Extreme daily precipitation events over land could increase by about 41% by 2100 under a high-emissions scenario with an increase in mesoscale moisture convergence, according to an ensemble of climate...

⚒️ Article: Extreme daily precipitation events over land could increase by 41% by 2100 with an increase in mesoscale moisture convergence

www.nature.com/articles/s41...

18.11.2025 16:30 👍 11 🔁 6 💬 1 📌 0
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TgRAV1–TgWRKY74–TgACS13 module fine‐tunes ethylene biosynthesis to modulate waterlogging‐induced root vitality in the gymnosperm Torreya grandis Under waterlogging stress, the TgRAV1–TgWRKY74 regulatory module in Torreya grandis modulates expression of the ethylene biosynthesis gene TgACS13 through multiple mechanisms to control ethylene accu....

doi.org/10.1111/jipb...

26.11.2025 05:52 👍 2 🔁 1 💬 0 📌 0
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Recent advances in the mechanism, transduction and function of oxygen sensing in plants Abstract. Response to reduced ambient oxygen is a key component of plant adaptation in natural and farmed environments and is regulated by oxygen dependent

Recent advances in the mechanism, transduction and function of oxygen sensing in plants
#nendrule #hypoxia #plantscience
academic.oup.com/jxb/advance-...

22.11.2025 12:49 👍 20 🔁 10 💬 0 📌 1