The Interaction Between ABA and Sugar Signalling Regulates Stomatal Production in Systemic Leaves by Controlling Sucrose Transport

Plant Cell & Environment, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

ABSTRACT A key feature of stress responses [closely relative to the phytohormone abscisic acid (ABA)] and associated acclimation in plants is dynamic adjustments related optimisation carbohydrate content between sink source organs. The production stomata, which consist a pore two adjacent guard cells, are central plant adaptation changing environment conditions. In this context, ABA core modulator environmentally determined stomatal development. It well established that reduces aperture but addition, hormone also enhances production. For example, when grown at very high CO 2 levels, Arabidopsis lines with defects biosynthesis have reduced By contrast, under standard conditions, these biosynthetic mutants show increased However, molecular mechanism(s) underpinning regulation remain largely unknown. review, we summarise current knowledge concerning sucrose transport signalling relating Further, provide fresh insights into possible function photosynthetic product induced‐ABA as balancer accumulation organs, control thereby adjust plants, by controlling systems.

Язык: Английский

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Comprehensive Genomic Analysis of Trihelix Transcription Factor Genes and Their Expression Underlying Abiotic Stress in Euphrates Poplar (Populus euphratica)

Plants, Год журнала: 2025, Номер 14(5), С. 662 - 662

Опубликована: Фев. 21, 2025

Trihelix transcription factors (TTFs) are light-sensitive proteins characterized by a triple-helix structure that play crucial role in regulating plant growth and development, especially response to abiotic stressors, such as drought salinity. This intriguing family of has been the focus extensive functional studies across various species. Despite their recognized significance, trihelix Populus euphratica not thoroughly explored, warranting more attention. study identifies 35 full-length genes euphratica, which grouped into five categories (GT-1, GT-γ, GT-2, SIP1, SH4) based on conserved motifs structural similarities, these unevenly distributed 19 linkage groups chromosomes. A syntenic analysis was conducted P. comparing it other The promoters contain numerous stress-responsive cis-elements, indicating potential for respond stress. RT-qPCR discovered significant induction gene salt stress, with 21 PeuTTF exhibiting distinct expression levels under conditions responsive Notably, heightened PeuTTF6, PeuTTF9, PeuTTF20 observed both roots leaves during suggesting TTF is connected plant’s conditions. Additionally, increases were noted PeuTTF2, PeuTTF31, PeuTTF32, may be convoluted These discoveries highlight improving tolerance plants. We offer new perspectives evolutionary trends variants we establish groundwork understanding properties salt-stressed drought-stressed provides opportunities advancement desert poplar agriculture have wider ramifications tree breeding techniques targeted at performance durability, particularly dry areas.

Язык: Английский

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Optimizing Root Phenotypes for Compacted Soils: Enhancing Root‐Soil‐Microbe Interactions

Plant Cell & Environment, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Soil compaction impedes root growth, reduces crop yields, and threatens global food security sustainable agriculture. Addressing this challenge requires a comprehensive understanding of root-soil interactions in compacted environments. This review examines key traits-architectural, anatomical, biochemical, biomechanical-that enhance plant resilience soils. We discuss how these traits influence penetration the formation more favorable soil pore structures, which are crucial for alleviating stress. Additionally, we explore molecular mechanisms underlying adaptation, identifying genetic biochemical factors that contribute to stress-tolerant phenotypes. The emphasizes role root-microbe boosting adaptability under compaction. By integrating insights, propose framework breeding crops with resilient systems thrive high strength, supporting agricultural practices essential amidst environmental challenges.

Язык: Английский

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Physiological and transcriptomic analysis of the effect of overexpression of the NTPIP2;4 gene on drought tolerance in tobacco

BMC Plant Biology, Год журнала: 2025, Номер 25(1)

Опубликована: Янв. 16, 2025

Aquaporins are widely present in the plant kingdom and play important roles response to abiotic adversity stresses such as water temperature extremes. In this study, we investigated regulatory role of NTPIP2;4 on drought tolerance tobacco at physiological transcriptional levels. experiment, constructed an NtPIP2;4 overexpression vector genetically transformed variety 'K326' investigate mechanism gene regulating transcriptomic Physiological analyses showed that plants low wilting under conditions compared wild-type (WT), enhanced superoxide dismutase (SOD) catalase (CAT) activities, lower levels anion (O2-), malondialdehyde (MDA), hydrogen peroxide (H2O2) than control, significantly higher proline (Pro) content control. The leaves overexpressing controls after were subjected transcriptome sequencing, RNA-seq analysis a total 1752 differentially expressed genes (DEGs) obtained conditions, with 1005 DEGs up-regulated 747 down-regulated genes. enriched mainly MAPK signaling pathway, hormone signal transduction amino sugar nucleotide metabolism, starch sucrose metabolism plant-pathogen interaction pathways. We also pathway auxin found transcript relevant pathways changed, hypothesized might regulate resistance through expression induced by auxin. This study demonstrates can enhance plants, which will provide basis for research function creation new germplasm resources.

Язык: Английский

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The Role of Phytohormones in Mediating Drought Stress Responses in Populus Species

International Journal of Molecular Sciences, Год журнала: 2025, Номер 26(8), С. 3884 - 3884

Опубликована: Апрель 19, 2025

Drought stress substantially impacts the development and viability of Populus spp., which are essential for forestry bioenergy production. This review summarizes describes functions phytohormones, such as abscisic acid, auxins, ethylene, in modulating physiological molecular responses to water scarcity. Drought-induced ABA-mediated stomatal closure root extension adaptation processes. Furthermore, auxin-ABA (abscisic acid) interactions augment flexibility, whereas ethylene regulates antioxidant defenses alleviate oxidative stress. The advantageous function endophytic bacteria, specifically plant growth-promoting rhizobacteria (PGPR), can drought resistance spruce trees by enhancing nutrient absorption stimulating development. Structural adaptations encompass modifications architecture, including enhanced length density, uptake efficiency. Similarly, Arbuscular Mycorrhizal Fungi (AMF) significantly enhance resilience forest trees. AMF establishes symbiotic relationships with roots, improving uptake, particularly phosphorus, during conditions. morphological alterations at root-soil interface interaction soil moisture reserves. examines complex mechanisms these hormones influence shortage, aiming offer insights into prospective techniques tolerance common tree species highlights importance hormone control influencing adaptive prominent stress, providing significant implications research practical applications sustainable agriculture. These findings lay groundwork spp. biotechnological means illuminating hormonal networks that confer resistance.

Язык: Английский

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Propionic Acid Signalling Modulates Stomatal Opening and Drives Energy Metabolism to Enhance Drought Resistance in Wheat (Triticum aestivum L.)

Plant Cell & Environment, Год журнала: 2025, Номер unknown

Опубликована: Апрель 29, 2025

ABSTRACT Drought stress caused by global climate change severely imperils crop productivity and increases environmental deterioration. Wheat ( Triticum aestivum L.) is an important worldwide food crop. resistance in wheat encompasses functional gene transcription, metabolism, hormone signalling, protein modifications. However, the underlying mechanisms which these regulatory responses are coordinated remain unknown. Herein, we report a drought‐resistance network triggers dynamic metabolic flux conversion from propionic acid (PA) to tricarboxylic (TCA) cycle through beta‐oxidation of fatty acids stimulates crosstalk various hormonal signals. It also possible that P300/CREB regulates histone acetylation confer drought wheat. Exogenous PA drives TCA glycolysis promotes stomatal closure hormones crosstalk. From Aegilops tauschii Cosson (the diploid progenitor common wheat) wheat, this novel function serves as survival strategy against changes, was validated field experiments. Our results highlight new comprehensive systemic effects genes, metabolomics, modification on provide insights into improving agroecological environment.

Язык: Английский

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Microbe-mediated stress resistance in plants: the roles played by core and stress-specific microbiota

Microbiome, Год журнала: 2025, Номер 13(1)

Опубликована: Май 4, 2025

Plants in natural surroundings frequently encounter diverse forms of stress, and microbes are known to play a crucial role assisting plants withstand these challenges. However, the mining utilization plant-associated stress-resistant microbial sub-communities from complex microbiome remains largely elusive. This study was based on communities over 13 weeks under four treatments (control, drought, salt, disease) define shared core microbiota stress-specific microbiota. Through co-occurrence network analysis, dynamic change networks were constructed, revealing distinct trajectories corresponding different treatments. Moreover, by simulating species extinction, impact selective removal robustness quantitatively assessed. It found that varying environmental conditions, made significant potential contributions maintenance stability. Our assessment utilizing null neutral models indicated assembly predominantly driven deterministic processes, whereas governed stochastic processes. We also identified features functional perspectives: tended enhance ability organisms multiple types stresses associated with mechanisms mitigating specific stresses. Using culturomic approach, 781 bacterial strains isolated, nine selected construct SynComs. These experiments confirmed containing effectively assist coping Collectively, we not only systematically revealed dynamics variation patterns rhizosphere various stresses, but sought constancy changes, plant stress tolerance, ultimately aimed at beneficial inoculation strategies for plants. research provides novel insights into understanding microbe-mediated resistance process Video Abstract.

Язык: Английский

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OsNAL11 and OsBURP12 Affect Rice Seed Germination at Low Temperature

Plant Cell & Environment, Год журнала: 2025, Номер unknown

Опубликована: Май 4, 2025

ABSTRACT Cold stress is one of the major disasters that severely affect agricultural production. Heat shock protein 40 (HSP40) and BURP proteins are involved in cold response. However, physiological molecular mechanisms heat family regulating seed germination at low temperature rarely reported. Under stress, rate, index potential nal11 burp12 mutants were lower than those wild type (ZH11), seedlings grew slowly. The interaction between OsNAL11 OsBURP12 was confirmed by yeast two‐hybrid, Split‐LUC, BiFC Co‐IP assays. Further analysis revealed compared with ZH11, had reduced reactive oxygen species scavenging ability during low‐temperature germination. Meanwhile, higher endogenous ABA levels exhibited PG (polygalacturonase) activity pectin content These results suggest likely to regulate under mainly modulating cell wall modification, which deepens understanding regulation mechanism rice stress.

Язык: Английский

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