Silica-Activated Redox Signaling Confers Rice with Enhanced Drought Resilience and Grain Yield

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Under a changing climate, enhancing the drought resilience of crops is critical to maintaining agricultural production and reducing food insecurity. Here, we demonstrate that seed priming with amorphous silica (SiO2) nanoparticles (NPs) (20 mg/L) accelerated germination speed, increased seedlings vigor, promoted seedling growth rice under polyethylene glycol (PEG)-mimicking conditions. An orthogonal approach was used uncover mechanisms enhanced tolerance, including electron paramagnetic resonance, Fourier transform infrared spectroscopy (FTIR), metabolomics, transcriptomics. It revealed unique surface chemistry silica, characterized by an enrichment silanol siloxane groups, can catalyze reactive oxygen species. This, in turn, initiates redox signaling activates downstream drought-responsive genes. In addition, silica-primed seeds exhibited significant 18 amino acids 6 sugars compared those undergoing hydropriming, suggesting mobilization stored energy reserves. The drought-tolerance trait observed vegetative tissues 35 day-old plants, where this tolerance associated catabolism anabolism antioxidants. A separated field trial showed SiO2NPs not only grain yield 7.77% (p = 0.051) 6.48% 0.066), respectively, normal conditions but also acid content. These results simple cost-effective nanoseed-priming convey life cycle-long while simultaneously increasing nutrition quality, providing effective sustainable strategy cultivate climate-resilient crops.

Language: Английский

---

Impact of Climate Change on Agroecosystems and Potential Adaptation Strategies

Land, Journal Year: 2023, Volume and Issue: 12(6), P. 1117 - 1117

Published: May 23, 2023

Agriculture is currently one of the leading economic sectors most impacted by climate change. Due to its great field application and susceptibility meteorological variability, effects change on agriculture have significant social consequences for human well-being. Moreover, increasing need land spaces population growth has produced strong competition between food urbanization, a loss agroecosystem that supports security. This review aims understand main risks generated in agricultural production potential strategies can be applied increase agriculture’s resilience. Agricultural risk linked decrease productivity foods, weed overgrowth at crops expense, parasites, water availability, soil alteration, negative impact costs consequent adopted cultivars, reduction pollination process, intense fires, alteration product quality. Thus, provisioning ecosystem services, reducing security terms quantity quality future generations. Finally, this review, we report adaptation resilience adverse environments Mainly, highlight new technologies, such as breeding technologies agrivoltaic smart applications, which, combined with agroecosystems, reduce following (for example, drought events low availability water). We suggest combination natural capital defined an “innovation-based solution” able support service flow agroecosystems.

Language: Английский

---

Exogenous γ-aminobutyric acid improves the photosynthesis efficiency, soluble sugar contents, and mineral nutrients in pomegranate plants exposed to drought, salinity, and drought-salinity stresses

BMC Plant Biology, Journal Year: 2023, Volume and Issue: 23(1)

Published: Nov. 6, 2023

γ-aminobutyric acid (GABA), as a regulator of many aspects plant growth, has pivotal role in improving stress resistance. However, few studies have focused on the use GABA increasing plants' resistance to interactional stresses, such drought-salinity. Therefore, focus this study was examine effect foliar application (0, 10, 20, and 40 mM) growth indices physio-biochemical parameters plants two pomegranate cultivars, 'Rabab' 'Atabaki' exposed drought, salinity, drought-salinity.Under conditions, photosynthetic capacity including transpiration rate, net intercellular carbon dioxide concentration, stomatal conductance water vapour, mesophyll conductance, significantly reduced. This resulted decrease root morphological traits fresh dry weight, diameter, volume, well weight aerial part plants. reversed negative effects caused by treatments maintained capacity. induced accumulation compatible osmolytes, total soluble carbohydrate, starch, glucose, fructose, sucrose, charge providing energy for cellular defense response against abiotic stresses. Analysis mineral nutrients shown that increases absorption potassium, potassium/sodium, magnesium, phosphorus, manganese, zinc, iron. As concentration increased up mM, prevented uptake toxic ions, sodium chloride.These findings highlight potential biostimulant strategy enhance tolerance.

Language: Английский

---

Tree crown defoliation in forest monitoring: concepts, findings, and new perspectives for a physiological approach in the face of climate change

Forestry An International Journal of Forest Research, Journal Year: 2024, Volume and Issue: 97(2), P. 194 - 212

Published: Jan. 5, 2024

Abstract Recurrent climate-driven disturbances impact on the health of European forests that reacted with increased tree dieback and mortality over course last four decades. There is therefore large interest in predicting understanding fate survival under climate change. Forest conditions are monitored within pan-European ICP Forests programme (UN-ECE International Co-operative Programme Assessment Monitoring Air Pollution Effects Forests) since 1980s, crown defoliation being most widely used parameter. Defoliation not a cause-specific indicator vitality, there need to connect levels physiological functioning trees. The responses connected species-specific concern, among others, water relations, photosynthesis carbon metabolism, growth, mineral nutrients leaves. indicators measure variables forest monitoring programs must be easy apply field current state-of-the-art technologies, replicable, inexpensive, time efficient regulated by ad hoc protocols. ultimate purpose provide data feed process-based models predict threats due This study reviews problems perspectives realization systematic assessment proposes set suitable for future application programs.

Language: Английский

---

A Smart Pesticide-Controlled Release Platform with Dual Stimuli-Responsive Functions for Enhanced Treatment of Plant Black Shank

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(12), P. 15143 - 15155

Published: March 14, 2024

Realizing controllable input of botanical pesticides is conducive to improving pesticide utilization, reducing residues, and avoiding environmental pollution but extremely challenging. Herein, we constructed a smart pesticide-controlled release platform (namely, SCRP) for enhanced treatment tobacco black shank based on encapsulating honokiol (HON) with mesoporous hollow structured silica nanospheres covered pectin chitosan oligosaccharide (COS). The SCRP has loading capacity 12.64% HON could effectively protect from photolysis. Owing the pH- pectinase-sensitive property pectin, smartly in response low pH or rich pectinase environment shank-affected area. Consequently, inhibits infection P. nicotianae controlled rate up 87.50%, which mainly due SCRP's capability accumulating ROS, changing cell membrane permeability, affecting energy metabolism. In addition, biocompatible, COS layer enables show significant growth-promoting effect tobacco. These results indicate that development stimuli-responsive system plant disease control great potential value practical agriculture production.

Language: Английский

---

Exploring Biomarkers for Malaria: Advances in Early Detection and Asymptomatic Diagnosis

Biosensors, Journal Year: 2025, Volume and Issue: 15(2), P. 106 - 106

Published: Feb. 12, 2025

Malaria is a tropical disease caused by the Plasmodium parasite, which was responsible for 249 million cases worldwide in 2022. currently diagnosed using RDTs, PCR-based methods, or blood smear microscopy. Ideal biomarkers have been identified malaria, with potential improving treatment, diagnosis, and overall clinical outcomes. This review discusses types of existing opportunities new to be used as diagnostic components detecting Plasmodium, including terms sensitivity, detection limit, specificity, species that can detected. Following comparison, five main ideal malaria were identified, namely HRP2, pLDH, hemozoin, aldolase, pGDH. These distinguished themselves markedly from others specificity detection, sensitivity analysis, use non-invasive samples. Several other biomarkers, such CRP, Ang-1, Ang-2, PCT, show their ability differentiate severity, levels these determined body comparison parasitemia. Of hemozoin aldolase still developed regarding samples different species. Further research on PCT needed evaluate potential.

Language: Английский

---

Omics: A new, promising technologies for boosting crop yield and stress resilience in African agriculture

Plant Stress, Journal Year: 2024, Volume and Issue: 11, P. 100366 - 100366

Published: Jan. 17, 2024

African agricultural systems are now in crucial need to assure food for the overgrowing population. To meet this challenges, we better way identify and modify key proteins genes involved yield potential, nutrient value, stress tolerance crops like maize, sorghum, soybeans, cassava, rice, etc. The deep understanding of metabolomics, transcriptomics, proteomics, genomics has proven be a useful tool increasing crop resilience Africa. However, there is very little information available regarding recent use omics technology increase yields This review provided advances plants molecular profiling techniques enhance our breeding strategies grown study will plant technologies inform strategies.

Language: Английский

---

Physiology of gamma-aminobutyric acid treated Capsicum annuum L. (Sweet pepper) under induced drought stress

PLoS ONE, Journal Year: 2023, Volume and Issue: 18(8), P. e0289900 - e0289900

Published: Aug. 17, 2023

There is now widespread agreement that global warming the source of climate variability and a danger poses significant challenge for 21st century. Climate crisis has exacerbated water deficit stress restricts plant's growth output by limiting nutrient absorption raising osmotic strains. Worldwide, Sweet pepper among most important vegetable crops due to its medicinal nutritional benefits. Drought negative impacts on sweet (Capsicum annuum L.) production. Although, γ aminobutyric acid (GABA) being an endogenous signaling molecule metabolite high physio-molecular activity in cells could induce tolerance regimes, but little known about influence development when applied exogenously. The current study sought comprehend effects foliar GABA application vegetative development, as well physiological biochemical constituents Capsicum L. A Field experiment was carried out during 2021 growing season (0, 2, 4mM) concentrated solutions were sprayed two genotypes including Scope F1 Mercury, under drought 50% 30% field capacity. Results showed exogenous supplementation significantly improved attributes such as, shoot root length, fresh dry weight, ratio (RSR), relative content (RWC) while decreasing electrolyte leakage (EL). Furthermore, positive effect chlorophyll a, b, a/b total (TCC), carotenoids (CC), soluble protein (SPC), sugars (SSC), proline (TPC), catalase (CAT), ascorbate peroxidase (APX) observed. at 2mM yielded highest values these variables. In both genotypes, (POD) superoxide dismutase (SOD) increased with those antioxidant enzymes treated plants compared non-treated plants. comparison rest treatments, solution had improvement morphological traits, composition. conclusion, can improve productivity regimes. addition, ameliorated levels osmolytes activities involved defense mechanism.

Language: Английский

---

Response Mechanism of Extracellular Polymeric Substances Synthesized by Alternaria sp. on Drought Stress in Alfalfa (Medicago sativa L.)

Journal of Agricultural and Food Chemistry, Journal Year: 2024, Volume and Issue: 72(30), P. 16812 - 16824

Published: July 18, 2024

This study investigates how extracellular polymeric substances (EPS) synthesized by dark septate endophytic (DSE) improve alfalfa's drought resistance. Drought stress was simulated in hydroponic culture, and roots were treated with different EPS concentrations to determine their effects on tolerance applicable concentrations. Hydroponic solutions 0.25 0.50% alleviated leaf wilting increased total plant fresh weight 35.8 57.7%, respectively. SEM shows that attached the may have served protect root system. treatment significantly depressed MDA contents of roots, stems, leaves. Roots responded increasing soluble sugar antioxidant enzyme activities, while mitigating stem synthesizing lipid compounds, amino acids, organic acid metabolites. Five metabolites been reported be associated growth, namely 3-

Language: Английский

---

Biological Outliers in Plant Stress Responses: Hormonal Outliers Unmask Specific Resilience Strategies in the Mediterranean Shrub Cistus albidus

Journal of Plant Growth Regulation, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Language: Английский

---