Influence of Exogenous Melatonin on the Physiological Traits of Camellia hainanica Seedlings Under Polyethylene Glycol-Induced Drought Stress

Plants, Год журнала: 2025, Номер 14(5), С. 676 - 676

Опубликована: Фев. 22, 2025

This study investigated the effects of exogenous melatonin (MT) on physiological responses Camellia hainanica seedlings under drought stress, using drought-tolerant variety “Hai Da 1” and drought-sensitive “Wan Hai as test materials. Seedlings were treated with MT at concentrations 0, 50, 100, 150, 200, 250 μmol/L through irrigation, followed by stress induced polyethylene glycol (PEG-6000). The results revealed that alleviated growth damage caused PEG-simulated leaf relative conductivity malondialdehyde (MDA) content showing an initial decrease increase concentration rose. In contrast, water content, chlorophyll antioxidant enzyme activity, secondary metabolite levels, carbohydrate initially increased then declined increasing concentration. Treatment 200 notably reduced MDA 40–50%, enhanced activity 20–30%, levels 11–42% in variety. These findings identified optimal for mitigating C. seedlings, providing a foundation its practical application production further research into resistance mechanisms mediated MT.

Язык: Английский

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Enhancing wheat growth under chromium toxicity using gibberellic acid and microbial inoculants as modulating agents

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Март 11, 2025

Язык: Английский

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Enhancing bread wheat resilience to cadmium and drought stress: insights from physiological, morphological, and transcriptomic responses to biochar and 24-epibrassinolide application

Biochar, Год журнала: 2025, Номер 7(1)

Опубликована: Март 17, 2025

Язык: Английский

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Improving growth of Solanum melongena L. exposed to lead (Pb) stress using gibberellic acid in combination with Agrobacterium fabrum

Plant Stress, Год журнала: 2024, Номер 13, С. 100503 - 100503

Опубликована: Май 31, 2024

Lead (Pb), as heavy metal, poses substantial threats to plant health, impeding growth, disrupting nutrient uptake, and inducing oxidative stress. Its interference with crucial processes such photosynthesis water combined its capacity accumulate in tissues, results stunted development compromised overall productivity. To address this issue, the application of gibberellic acid (GA3) emerges an effective amendment, promoting seed germination, stem elongation, flowering. Additionally, inoculation rhizobacteria, specifically Agrobacterium fabrum (A. fabrum), offers resistance, improved enhanced growth under conditions metal toxicity. Therefore, present study was designed investigate impact GA3 A. on Solanum melongena L. cultivated Pb The experiment comprised four treatments: control, fabrum, 30 mg/L (30GA3), + 30GA3, applied replications following a completely randomized design. Results indicated that 30GA3 significantly shoot root length, fresh dry weight over control Furthermore, notable increase chlorophyll contents, stomatal conductance, transpiration rate, photosynthetic rate stress validated effectiveness 30GA3. improvements N, P, K concentration roots shoots confirmed efficacious functioning from In conclusion, is recommended amendment for mitigation

Язык: Английский

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Minimization of heavy metal toxicity in radish (Raphanus sativus) by strigolactone and biochar

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Июнь 13, 2024

Abstract Due to the high solubility of Cd in water, it is considered a potential toxin which can cause cancer humans. In plants, associated with development oxidative stress due generation reactive oxygen species. To overcome this issue, roles different plant hormones are vital. Strigolactones, one such natural hormones, show promise alleviating cadmium toxicity by mitigating its harmful effects. Acidified biochar (AB) also effectively mitigate via ion adsorption and pH buffering. However, combined effects strigolactone AB still need in-depth investigations context existing literature. This study aimed assess individual impacts SLs (0 25 µM) 0.75% w/w) on radish growth under toxicity, i.e., 0 20 mg Cd/kg soil. Using fully randomized design (CRD), each treatment was administered four replicates. comparison control soil contamination, results showed that µM + significantly improved following: shoot length (~ 17%), root 47%), fresh weight 28%), dry 96%), chlorophyll 43%), b 31%), total 37%). It noted more pronounced decreasing antioxidant activities than Cd/ kg toxicity. performing far better sole application plants. conclusion, regulating activities, increase cadmium-contaminated soils.

Язык: Английский

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A systematic study on synergistic effect of biochar-compost in improving soil function and reducing cadmium toxicity in Spinacia oleracea L.

Environmental Technology & Innovation, Год журнала: 2024, Номер 36, С. 103775 - 103775

Опубликована: Авг. 8, 2024

With its direct or indirect reliance on agriculture for a living, the Indian economy is heavily dependent this industry. Food insecurity result of decreased productivity due to growing contamination and pollution. Biochar an organic carbon bound environment friendly material known enhancing soil functions plant growth. On other hand, compost organic, nutrient-rich product that formed by aerobic process used as amendment. Both these have numerous benefits amendment in soil-plant system. This complete study effects applying biochar separately combination at ratios 0 %, 1 2 % cadmium contaminated (0 mg/kg, 4 mg/kg 8 Cd). Their effect was studied characteristics, seed germination, morphology, photosynthetic pigments, oxidative stress, enzymatic non-enzymatic antioxidant activity spinach grown Chhattisgarh state, India. The results depicted beneficial improving productivity. Compost mixtures improved quality Cd concentration. When comparing biochar-compost either alone, morphological changes chlorophyll content increased greater extent their combined application. Proline activities were similarly enhanced mixture. showed effective potential growth development polluted soil.

Язык: Английский

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Mitigation of salinity-induced adverse effects through exogenous application of gibberellic acid in turnip ( Brassica rapa L.)

Cogent Food & Agriculture, Год журнала: 2024, Номер 10(1)

Опубликована: Авг. 21, 2024

Soil salinity is the primary factor restricting plant growth and development. In this study, morpho-physiological, biochemical, molecular responses of turnip seedlings to three distinct salt stress treatments were investigated: no 0 mM, moderate at 80 severe 160 mM. Gibberellic acid applied in different concentrations: control, 1 2 The dry fresh weights, shoot root lengths, carotenoid chlorophyll levels, K+ ion accumulation, antioxidant enzyme activity all decreased by stress, particularly 200 However, it accelerated buildup Na+ ions oxidative damage. Application gibberellic enhanced development under stress. Compared with acid-2mM recorded highest increase roots shoots length (16.79–10.80%), weights (15.21–28.39%), a b (7.49–15.94%), SOD POD (16.92–10.85%), yield weight diameter (18.33–10.11%) during levels. This treatment also reduced MDA H2O2 content (15.12–10.58%), leaves (20.20–5.44%). Based on these findings, concentration mM may be useful tool for enhancing growth.

Язык: Английский

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Transcriptome and Metabolome Analyses Reveal the Molecular Mechanisms of Albizia odoratissima’s Response to Drought Stress

Plants, Год журнала: 2024, Номер 13(19), С. 2732 - 2732

Опубликована: Сен. 29, 2024

Albizia odoratissima is a deciduous tree species belonging to the family Leguminosae. It widely distributed in southern subtropical and tropical areas of China has important ecological economic value. The growth metabolic processes A. are affected by drought stress, but molecular mechanisms remain unknown. Therefore, this study investigated physicochemical properties, gene expression, metabolites seedlings under stress. results show that, leaves seedlings, stress reduced moisture content, chlorophyll photosynthetic efficiency, superoxide dismutase (SOD) activity, gibberellin (GA) indoleacetic acid (IAA) contents while increasing catalase (CAT) peroxidase (POD) activities malondialdehyde (MDA), proline, soluble sugar, protein contents. Within CK5 (Day 5 control group) vs. T5 treatment), CK10 T10, CK15 T15, CK20 T20 groups (CK: group; T: total 676 differentially expressed genes (DEGs) were upregulated 518 DEGs downregulated, 228 143 differential accumulation (DAMs) identified T10 groups. These mainly involved amino alkaloid metabolism pathways seedlings. In biosynthesis pathways, relative expression levels AoproA (Aod04G002740, ORTHODONTIC APPLIANCE), AoOAT (Aod07G015970, ORNITHINE-OXO-ACID TRANSAMINASE), AoAOC3 (Aod12G005010/08G003360/05G023920/08G003000/08G003010, AMINE OXIDASE COPPER CONTAINING 3) increased, which concurrently promoted arginine, piperine, cadaverine, lysine. Furthermore, some key transcription factors response using weighted co-expression network analyses (WGCNA) method. findings reveal that respond improving capacities antioxidant system secondary metabolism.

Язык: Английский

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Mitigation of drought-induced stress in sunflower (Helianthus annuus L.) via foliar application of Jasmonic acid through the augmentation of growth, physiological, and biochemical attributes

BMC Plant Biology, Год журнала: 2024, Номер 24(1)

Опубликована: Июнь 22, 2024

Abstract Drought stress poses a significant threat to agricultural productivity, especially in areas susceptible water scarcity. Sunflower ( Helianthus annuus L.) is widely cultivated oilseed crop with considerable potential globally. Jasmonic acid, plant growth regulator, plays crucial role alleviating the adverse impacts of drought on morphological, biochemical, and physiological characteristics crops. Experimental detail includes sunflower varieties (Armani Gold, KQS-HSF-1, Parsun, ESFH-3391), four levels (0, 25%, 50%, 75% stress), three 40ppm, 80ppm) jasmonic acid. The 0% 0ppm acid were considered as control treatments. experimental design was completely randomized replicates. significantly reduced all varieties. However, exogenous application at concentrations 40ppm 80ppm enhanced parameters, shoot root length (1.93%, 19%), fresh weight (18.5%, 25%), chlorophyll content (36%), photosynthetic rate (22%), transpiration (40%), WUE (20%), MDA (6.5%), Phenolics (19%), hydrogen peroxide (7%) proline (28%) glycine betaine (15–30%) under water-stressed conditions, which closely linked increase stomatal activity stimulated by Furthermore, JA 80 ppm found be most appropriate dose reduce effect It concluded that foliar has enhance tolerance improving sunflower.

Язык: Английский

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Physiological response of microalga Dunaliella parva when treated with MeJA, GA3

PLoS ONE, Год журнала: 2024, Номер 19(10), С. e0308730 - e0308730

Опубликована: Окт. 22, 2024

DpAP2 is a transcription factor regulating carotenoid biosynthesis pathway. It was speculated that MeJA significantly decreased expression of gene, then the decreasing inhibited some key enzyme genes such as PSY , PDS and GGPS in In contrast, it GA3 increased increasing To increase content carotenoid, we evaluated effect overexpression on accumulation D . parva Transgenic showed higher (3.18 mg/g DW) compared with control group (2.13 at 9 d. The dosage effects exogenous hormones were found cells treated different concentrations (10, 20, 50, 100 μM) μM). high (10–100 relative significantly. On contrary, when 10, 50 μM GA3, which promoted carotenoid. Therefore, inferred there hierarchical regulation from hormone, factor, gene to biosynthesis. Carotenoid enhanced by (1.4930 fold control) substances (1.5889 control), laid foundation for massive carotenoids microalgae. future, further studies required demonstrate complex regulatory network.

Язык: Английский

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