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Posts by International Society for Plant Low Oxygen Research

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...

www.pnas.org/doi/full/10....

4 days ago 0 0 0 0

Synthetic hypoxia sensing in Arabidopsis from @syno2xis.bsky.social & @vinayshukla.bsky.social

Prolyl hydroxylase-dependent proteolysis enables the orthogonal hypoxia responses in plants

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

1 week ago 20 7 0 0
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Oxygen deprivation due to flooding brings many changes in plant physiology.

SNP2Prot hosted Dr Romy Schmidt-Schippers from Uni Bielefeld today. Her work demonstrated key proteins and cellular pathways that adapt upon flood induced hypoxia.

#Hypoxia #RCD1 #Arabidopsis #O2 #OxygenSensing #Evolution

2 weeks ago 11 3 0 0

Physiological responses of submerged freshwater macrophytes to multiple stressors www.biorxiv.org/content/10.64898/2026.03...

4 weeks ago 2 1 0 0

We reviewed one of our favorite proteins Phytoglobin1 and its crucial role in hypoxia acclimation and development for the @isplore.bsky.social special issue in @jxbotany.bsky.social @uuplants.bsky.social check it out!

4 weeks ago 11 7 0 0
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Phytoglobin 1 in plant hypoxia acclimation and development: Integrating oxygen sensing, NO homeostasis and redox balance Abstract. Hypoxia is integral to the plant life cycle, occurring during both development and environmental stresses like flooding. The class I phytoglobins

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

4 weeks ago 3 1 0 0

For every 1°C of warming, the atmosphere can hold approximately 7% more moisture. Just sayin’.

1 month ago 613 284 9 8
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Floodproof mustards: Adaptation strategies in wild Brassicaceae #plantscience

doi.org/10.1093/jxb/...

1 month ago 1 0 0 0
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A synthetic ERFVII-dependent circuit in yeast sheds light on the regulation of early hypoxic responses of plants | PNAS Plants face hypoxic conditions either chronically, as particular tissues are characterized by fluctuating or stable low oxygen levels, or acutely, ...

Finally officially out!!

www.pnas.org/doi/10.1073/...

We moved the main oxygen sensing machinery from plants to yeast and we learned a few things!

1 month ago 18 9 3 1
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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

1 month ago 20 14 3 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

1 month ago 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

1 month ago 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/...

1 month ago 10 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

2 months ago 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...

2 months ago 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/...

2 months ago 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

2 months ago 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

2 months ago 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

2 months ago 20 9 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...

2 months ago 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

2 months ago 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...

3 months ago 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 🧪

3 months ago 17 5 0 0

bsky.app/profile/newp...

3 months ago 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...

3 months ago 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

3 months ago 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/...

3 months ago 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...

3 months ago 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...

3 months ago 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

4 months ago 7 2 0 0