Stress resilience in plants: the complex interplay between heat stress memory and resetting

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

Published: Jan. 23, 2025

Summary Heat stress (HS) poses a major challenge to plants and agriculture, especially during climate change‐induced heatwaves. Plants have evolved mechanisms combat HS remember past stress. This memory involves lasting changes in specific responses, enabling better anticipate react future heat events. is multi‐layered cellular phenomenon that, addition epigenetic modifications, protein quality control, metabolic pathways broader physiological adjustments. An essential aspect of modulating timely resetting, which restores defense responses baseline levels optimizes resource allocation for growth. Balancing with resetting enables withstand while maintaining growth reproductive capacity. In this review, we discuss regulatory layers highlighting their critical balance enhancing resilience plant fitness. We primarily focus on the model Arabidopsis thaliana due limited research other species outline key areas study.

Language: Английский

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Auxin‐dependent regulation of cell division rates governs root thermomorphogenesis

The EMBO Journal, Journal Year: 2023, Volume and Issue: 42(11)

Published: April 18, 2023

Abstract Roots are highly plastic organs enabling plants to adapt a changing below‐ground environment. In addition abiotic factors like nutrients or mechanical resistance, plant roots also respond temperature variation. Below the heat stress threshold, Arabidopsis thaliana seedlings react elevated by promoting primary root growth, possibly reach deeper soil regions with potentially better water saturation. While above‐ground thermomorphogenesis is enabled thermo‐sensitive cell elongation, it was unknown how modulates growth. We here show that able sense and independently of shoot‐derived signals. This response mediated yet thermosensor employs auxin as messenger relay signals cycle. Growth promotion achieved primarily increasing division rates in apical meristem, depending on de novo local biosynthesis temperature‐sensitive organization polar transport system. Hence, cellular target ambient differs fundamentally between shoot tissues, while remains same.

Language: Английский

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Embracing plant plasticity or robustness as a means of ensuring food security

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

Published: Jan. 7, 2025

The dual challenges of global population explosion and environmental deterioration represent major hurdles for 21st Century agriculture culminating in an unprecedented demand food security. In this Review, we revisit historical concepts plasticity canalization before integrating them with contemporary studies genotype-environment interactions (G×E) that are currently being carried out at the genome-wide level. doing so address both fundamental questions regarding G×E potential strategies to best secure yields current future climate scenarios. Breeding adaptive crop cultivars under changing scenario is anything but easy. Here, authors review their integration genotype-environmental objective facilitate breeding.

Language: Английский

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Impact of Nutrient Stress on Plant Disease Resistance

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(4), P. 1780 - 1780

Published: Feb. 19, 2025

Plants are constantly exposed to abiotic and biotic stresses that seriously affect crop yield quality. A coordinated regulation of plant responses combined abiotic/biotic requires crosstalk between signaling pathways initiated by each stressor. Interconnected further finetune stress allow the respond such effectively. The nutritional status might influence disease resistance strengthening or weakening immune responses, as well through modulation pathogenicity program in pathogen. Here, we discuss advances our understanding interactions nutrient stress, deficiency excess, context current agricultural practices. introduction chemical fertilizers pesticides was a major component Green Revolution 1960s greatly boosted production. However, massive application agrochemicals also has adverse consequences on environment animal/human health. Therefore, an in-depth connections caused overfertilization (or low bioavailability nutrients) is timely novel field research with important implications for control species. Optimizing management practices tailored specific environmental conditions will be crucial maximizing production using environmentally friendly systems.

Language: Английский

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Epigenetic and transcription factors synergistically promote the high temperature response in plants

Trends in Biochemical Sciences, Journal Year: 2023, Volume and Issue: 48(9), P. 788 - 800

Published: June 29, 2023

Language: Английский

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MicroRNA156 conditions auxin sensitivity to enable growth plasticity in response to environmental changes in Arabidopsis

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: March 22, 2023

MicroRNAs (miRNAs) play diverse roles in plant development, but whether and how miRNAs participate thermomorphogenesis remain ambiguous. Here we show that HYPONASTIC LEAVES 1 (HYL1)-a key component of miRNA biogenesis-acts downstream the thermal regulator PHYTOCHROME INTERACTING FACTOR 4 temperature-dependent plasticity hypocotyl growth Arabidopsis. A hyl1-2 suppressor screen identified a dominant dicer-like1 allele rescues hyl1-2's defects biogenesis thermoresponsive elongation. Genome-wide transcriptome analysis revealed microRNA156 (miR156) its target SQUAMOSA PROMOTER-BINDING-PROTEIN-LIKE 9 (SPL9) to be critical regulators thermomorphogenesis. Surprisingly, perturbation miR156/SPL9 module disengages seedling responsiveness warm temperatures by impeding auxin sensitivity. Moreover, miR156-dependent sensitivity also operates shade avoidance response at lower temperatures. Thus, these results unveil as previously uncharacterized genetic circuit enables environmental temperature light changes.

Language: Английский

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Epigenetics and plant hormone dynamics - a functional and methodological perspective

Journal of Experimental Botany, Journal Year: 2024, Volume and Issue: 75(17), P. 5267 - 5294

Published: Feb. 19, 2024

Abstract Plant hormones, pivotal regulators of plant growth, development, and response to environmental cues, have recently emerged as central modulators epigenetic processes governing gene expression phenotypic plasticity. This review addresses the complex interplay between hormones mechanisms, highlighting diverse methodologies that been harnessed decipher these intricate relationships. We present a comprehensive overview understand how phytohormones orchestrate modifications, shaping adaptation survival strategies. Conversely, we explore ensure hormonal balance regulate signalling pathways key hormones. Furthermore, our investigation includes search for novel genes are regulated by under control processes. Our offers contemporary epigenetic–plant hormone crosstalk, emphasizing its significance in potential agronomical applications.

Language: Английский

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Shining light on plant growth: recent insights into phytochrome-interacting factors

Journal of Experimental Botany, Journal Year: 2024, Volume and Issue: 76(3), P. 646 - 663

Published: June 15, 2024

Light serves as a pivotal environmental cue regulating various aspects of plant growth and development, including seed germination, seedling de-etiolation, shade avoidance. Within this regulatory framework, the basic helix-loop-helix transcription factors known phytochrome-interacting (PIFs) play an essential role in orchestrating responses to light stimuli. Phytochromes, acting red/far-red receptors, initiate cascade events leading degradation PIFs (except PIF7), thereby triggering transcriptional reprogramming facilitate photomorphogenesis. Recent research has unveiled multiple post-translational modifications that regulate abundance and/or activity PIFs, phosphorylation, dephosphorylation, ubiquitination, deubiquitination, SUMOylation. Moreover, intriguing findings indicate can influence chromatin modifications. These include modulation histone 3 lysine 9 acetylation (H3K9ac), well occupancy variants such H2A.Z (associated with gene repression) H3.3 activation), intricately downstream expression response cues. This review summarizes recent advances understanding signaling pathways, major focus on

Language: Английский

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KAI2 Can Do: Karrikin Receptor Function in Plant Development and Response to Abiotic and Biotic Factors

Plant and Cell Physiology, Journal Year: 2023, Volume and Issue: 64(9), P. 984 - 995

Published: July 15, 2023

The α/β hydrolase KARRIKIN INSENSITIVE 2 (KAI2) functions as a receptor for yet undiscovered phytohormone, provisionally termed KAI2 ligand (KL). In addition, it perceives karrikin, butenolide compound found in the smoke of burnt plant material. KAI2-mediated signaling is involved regulating seed germination and shaping seedling adult morphology, both above below ground. It also governs responses to various abiotic stimuli stresses shapes biotic interactions. being linked an elaborate cross-talk with other phytohormone pathways such auxin, gibberellin, abscisic acid, ethylene salicylic acid signaling, addition light nutrient starvation signaling. Further connections will likely be revealed future. This article summarizes recent advances unraveling function its interaction pathways.

Language: Английский

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Heat stress in plants: sensing, signalling and ferroptosis

Journal of Experimental Botany, Journal Year: 2024, Volume and Issue: unknown

Published: July 10, 2024

In the current context of global warming, high temperature events are becoming more frequent and intense in many places around world. this context, understanding how plants sense respond to heat is essential develop new tools prevent plant damage address food security, as threatening agricultural sustainability. This review summarizes integrates our underlying cellular, physiological, biochemical molecular regulatory pathways triggered under moderately extremely conditions. Given that temperatures can also trigger ferroptosis, study cell death mechanism constitutes a strategic approach understand might overcome otherwise lethal events.

Language: Английский

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