Survival mechanisms of plants under hypoxic stress: Physiological acclimation and molecular regulation

Journal of Integrative Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

Hypoxia (low-oxygen tension) caused by complete submergence or waterlogging is an abiotic stress factor that severely affects the yield and distribution of plants. To adapt to survive under hypoxic conditions, plants employ several physiological molecular strategies integrate morphological acclimation, metabolic shifts, signaling networks. Group VII ETHYLENE RESPONSE FACTORS (ERF-VIIs), master transcription factors, have emerged as a hub for regulating plant hypoxia sensing signaling. Several mitogen-activated protein kinases calcium-dependent recently been reported be involved in potentiating via interaction with phosphorylation ERF-VIIs. Here, we provide overview current knowledge on regulatory network ERF-VIIs their post-translational regulation determining responses reoxygenation, primary focus recent advancements understanding how molecules, including ethylene, long-chain acyl-CoA, phosphatidic acid, nitric oxide, are ERV-VII activities. Furthermore, propose future directions investigating intricate crosstalk between growth resilience, which central guiding breeding agricultural management promoting flooding tolerance

Language: Английский

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Disulfidptosis: a novel cell death modality induced by actin cytoskeleton collapse and a promising target for cancer therapeutics

Cell Communication and Signaling, Journal Year: 2024, Volume and Issue: 22(1)

Published: Oct. 11, 2024

Disulfidptosis is a novel discovered form of programmed cell death (PCD) that diverges from apoptosis, necroptosis, ferroptosis, and cuproptosis, stemming disulfide stress-induced cytoskeletal collapse. In cancer cells exhibiting heightened expression the solute carrier family 7 member 11 (SLC7A11), excessive cystine importation reduction will deplete nicotinamide adenine dinucleotide phosphate (NADPH) under glucose deprivation, followed by an increase in intracellular stress aberrant bond formation within actin networks, ultimately culminating collapse disulfidptosis. involves crucial physiological processes eukaryotic cells, such as uptake, NADPH metabolism, dynamics. The Rac1-WRC pathway-mediated polymerization also implicated this due to its contribution formation. However, precise mechanisms underlying disulfidptosis role tumors are not well understood. This probably multifaceted functionalities SLC7A11 complexities downstream pathways driving review describes critical roles summarizes recent research advancements potential Moreover, less-studied aspects newly process highlighted stimulate further investigations field.

Language: Английский

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Cold exposure transiently increases resistance of Arabidopsis thaliana against the fungal pathogen Botrytis cinerea

Physiological and Molecular Plant Pathology, Journal Year: 2025, Volume and Issue: unknown, P. 102579 - 102579

Published: Jan. 1, 2025

Language: Английский

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Proteasomes accumulate in the plant apoplast where they participate in microbe-associated molecular pattern (MAMP)-triggered pathogen defense

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 14, 2025

Abstract Akin to mammalian extracellular fluids, the plant apoplastic fluid (APF) contains a unique collection of proteins, RNAs, and vesicles that drive many physiological processes ranging from cell wall assembly defense against environmental challenges. Using an improved method enrich for Arabidopsis APF, we better define its composition discover APF harbors active proteasomes though microscopic detection, proteasome-specific activity immunological assays, mass spectrometry showing selective enrichment core protease. Functional analysis (ex)-proteasomes reveals they help promote basal pathogen through proteolytic release microbe-associated molecular patterns (MAMPs) such as flg22 bacterial flagellin induce protective reactive-oxygen-species (ROS) bursts. Flagellin-triggered ROS is also strongly suppressed by enigmatic Pseudomonas syringae virulence effector syringolin-A blocks ex-proteasome activity. Collectively, provide deep catalog apoplast proteins evidence ex-proteasomes participate in evolving arms race between pathogens their hosts.

Language: Английский

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Mite Infestation Induces a Moderate Oxidative Stress in Short-Term Soybean Exposure

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 590 - 590

Published: Feb. 14, 2025

Phytophagous mites are herbivores that feed on various economically important plants, such as soybean [Glycine max (L.) Merril]. Thus, our objective is to evaluate the oxidative stress stage of plants infested by Tetranychus ludeni Zacher. Leaflets from three trifoliate leaves were pooled form composite samples for each exposure time and evaluated at following evaluation times: 0 h, 20 min, 6 12 24 48 h. In initial phase infestation (20 min), an burst was observed, represented prominent hydrogen peroxide accumulation rather than superoxide radicals. This occurred in parallel a strong increase antioxidant activities catalase, ascorbate peroxidase, glutathione S-transferase, but not dismutase. These changes likely reflected enhanced activation signaling pathways involved response. After this phase, min decrease S-transferases activities, despite levels remaining significantly elevated, along with marked transient reduced content proline. Interestingly, dismutase activity increased after h lipid peroxidation, whereas remained elevated until infestation. By final evaluation, infestation, some redox indicators altered relation control state moderate stress. unprecedented way, data suggest T. triggered response plants. findings highlight proper monitoring management can reduce economic losses without resorting aggressive chemical interventions.

Language: Английский

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Aboveground whole‐plant live imaging method for nitric oxide (NO) reveals an intricate relationship between NO and H₂O₂

New Phytologist, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Nitric oxide (NO) is a key regulator of plant development, growth, and responses to the environment. Together with hydrogen peroxide (H2O2), NO modifies structure function proteins, controlling redox signaling. Although has been studied extensively at cellular subcellular levels, very little known about changes in content whole-plant level. Here, we report on development an aboveground live imaging method for NO. Using mutants altered as well donor/scavenger, demonstrate specificity detection Arabidopsis thaliana plants were found produce basal level under control conditions. levels accumulated enzymatically following heat stress applied entire plant, systemic manner different locally stimuli. Similar or opposing accumulation patterns also H2O2 during response Our findings reveal that accumulates local stimulus. In addition, they shed new light intricate relationships between H2O2. The reported opens way multiple future studies NO's role biology.

Language: Английский

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The local environment influences salt tolerance differently in four Salicornia europaea L. inland populations

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 16, 2025

Language: Английский

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Advances in cotton harvesting aids

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: April 24, 2025

During the cotton harvesting stage, application of chemical harvest aids, such as thidiazuron and ethephon, facilitates defoliation boll maturation, serving a crucial management tool in modern cultivation systems. This paper reviews recent advancements ripening research; delves into physiological mechanisms underlying defoliation, fiber development; summarizes effects major defoliants herbicide-type desiccants on plants. It also explores roles hormones genes that are involved process identifies key factors influencing effectiveness aids. Additionally, this offers recommendations scientific prospects for optimizing technologies future. Through these contributions, it aims to provide valuable insights research efficient mature cotton, stimulate innovation technologies, enhance quality yield reduce labor costs, contribute sustainable development industry.

Language: Английский

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Exogenous Calcium Enhances Castor Tolerance to Saline–Alkaline Stress by Regulating Antioxidant Enzyme Activity and Activating Ca²⁺ and ROS Signaling Crosstalk

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(23), P. 12717 - 12717

Published: Nov. 26, 2024

Saline-alkaline stress is a major factor limiting agricultural development, with calcium (Ca

Language: Английский

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New Insights into the Connections between Flooding/Hypoxia Response and Plant Defenses against Pathogens

Plants, Journal Year: 2024, Volume and Issue: 13(16), P. 2176 - 2176

Published: Aug. 6, 2024

The impact of global climate change has highlighted the need for a better understanding how plants respond to multiple simultaneous or sequential stresses, not only gain fundamental knowledge integrate signals and mount coordinated response stresses but also applications improve crop resilience environmental stresses. In recent years, there been stronger emphasis on molecular mechanisms underlying crosstalk between signaling pathways transcriptional programs that underpin plant responses combination flooding (or resulting hypoxic stress) with pathogen infection is particularly relevant due frequent co-occurrence both in nature. This review focuses (i) experimental approaches challenges associated study combined flooding/hypoxia infection, (ii) influences immunity defense pathogens, (iii) contributes shaping soil microbiome linked plants’ ability fight infection.

Language: Английский

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