Harnessing plant growth-promoting rhizobacteria, Bacillus subtilis and B. aryabhattai to combat salt stress in rice: a study on the regulation of antioxidant defense, ion homeostasis, and photosynthetic parameters

Frontiers in Plant Science, Год журнала: 2024, Номер 15

Опубликована: Июнь 13, 2024

Introduction The ongoing global expansion of salt-affected land is a significant factor, limiting the growth and yield crops, particularly rice ( Oryza sativa L). This experiment explores mitigation salt-induced damage in (cv BRRI dhan100) following application plant growth-promoting rhizobacteria (PGPR). Methods Rice seedlings, at five- six-weeks post-transplanting, were subjected to salt stress treatments using 50 100 mM NaCl seven-day intervals. Bacterial cultures consisting endophytic PGPR Bacillus subtilis B. aryabhattai ) an epiphytic administered three critical stages: transplantation 42-day-old vegetative stage five weeks post-transplantation, panicle initiation seven post-transplantation. Results Salt induced osmotic stress, ionic imbalances, oxidative plants, with consequent negative effects on growth, decrease photosynthetic efficiency, changes hormonal regulation, along increased methylglyoxal (MG) toxicity. treatment alleviated salinity by improving antioxidant defenses, restoring equilibrium, enhancing water balance, increasing nutrient uptake, attributes, bolstering hormone synthesis, MG detoxification. Discussion These findings highlight potential bolster physiological biochemical functionality serving as effective buffer against stress–induced damage. showed greatest benefits, while both had commendable mitigating plants.

Язык: Английский

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Alleviating salinity stress in canola (Brassica napus L.) through exogenous application of salicylic acid

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

Опубликована: Июнь 27, 2024

Abstract Canola, a vital oilseed crop, is grown globally for food and biodiesel. With the enormous demand growing various crops, utilization of agriculturally marginal lands emerging as an attractive alternative, including brackish-saline transitional lands. Salinity major abiotic stress limiting growth productivity most causing insecurity. Salicylic acid (SA), small-molecule phenolic compound, essential plant defense phytohormone that promotes immunity against pathogens. Recently, several studies have reported SA was able to improve resilience withstand high salinity. For this purpose, pot experiment carried out ameliorate negative effects sodium chloride (NaCl) on canola plants through foliar application SA. Two varieties Faisal (V1) Super (V2) were assessed their performance during exposure salinity i.e. 0 mM NaCl (control) 200 NaCl. Three levels (0, 10, 20 mM) applied spray. The experimental design used study completely randomized (CRD) with three replicates. salt reduced shoot root fresh weights up 50.3% 47% respectively. In addition, chlorophyll b contents decreased 61–65%. Meanwhile, treatment diminished enhanced weight (49.5%), dry (70%), chl. (36%) (67%). Plants treated showed increased both enzymatic (superoxide dismutase (27%), peroxidase (16%) catalase (34%)) non-enzymatic antioxidants total soluble protein (20%), sugar (17%), (22%) flavonoids (19%), anthocyanin (23%), endogenous ascorbic (23%). Application also osmolytes glycine betaine (31%) free proline (24%). concentration Na + ions concomitantly K Ca 2+ absorption in plants. Overall, treatments quite effective reducing By comparing canola, it observed variety V2 (Super) grew better than V1 (Faisal). Interestingly, proved be ameliorating

Язык: Английский

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Investigating the growth promotion potential of biochar on pea (Pisum sativum) plants under saline conditions

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

Опубликована: Май 13, 2024

Abstract Pea, member of the plant family Leguminosae, play a pivotal role in global food security as essential legumes. However, their production faces challenges stemming from detrimental impacts abiotic stressors, leading to concerning decline output. Salinity stress is one major factors that limiting growth and productivity pea. biochar amendment soil has potential alleviating oxidative damage caused by salinity stress. The purpose study was evaluate may mitigate adverse effect on treatments this were, (a) Pea varieties; (i) V1 = Meteor V2 Green Grass, Stress, (b) Control (0 mM) (ii) (80 (c) Biochar applications; Control, 8 g/kg (56 g) (iii) 16 (112 g). demonstrated considerable reduction morphological parameters Shoot root length decreased (29% 47%), fresh weight dry shoot (85, 63%) (49, 68%), well area leaf reduced (71%) among both varieties. Photosynthetic pigments (chlorophyll , b carotenoid contents under 80 mM up (41, 63, 55 76%) varieties compared control. Exposure pea plants increased enhancing hydrogen peroxide malondialdehyde content (79 89%), while activities as, (56% 59%) catalase (CAT), superoxide dismutase (SOD), peroxidase (POD) were applications 59, 86%) non-enzymatic antioxidants anthocyanin flavonoids improved 67%). Organic osmolytes such total soluble proteins, sugars, glycine betaine (57, 83, 140%) amendment. Among uptake mineral ions, Na + greater (144 73%) saline-stressed control, Ca 2+ K (175, 119%) (77, 146%) biochar-treated plants. Overall findings revealed found be effective reducing toxicity causing reactive oxygen species ions improving growth, physiological anti-oxidative (Fig. 1).

Язык: Английский

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Enhancing Plant Stress Resilience with Osmolytes and Nanoparticles

Journal of soil science and plant nutrition, Год журнала: 2024, Номер 24(2), С. 1871 - 1906

Опубликована: Май 23, 2024

Язык: Английский

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Modulation of the polyamines, osmolytes and antioxidant defense system to ameliorate drought stress tolerance in Hordeum vulgare L. using ascorbic acid

South African Journal of Botany, Год журнала: 2024, Номер 171, С. 726 - 736

Опубликована: Июль 6, 2024

Язык: Английский

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Ascorbic acid on the induction of salt stress tolerance in guava in the seedling formation phase

Plant Physiology and Biochemistry, Год журнала: 2025, Номер 220, С. 109506 - 109506

Опубликована: Янв. 23, 2025

Язык: Английский

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Development of transgenic wheat plants withstand salt stress via the MDAR1 gene

GM crops & food, Год журнала: 2025, Номер 16(1), С. 173 - 187

Опубликована: Фев. 10, 2025

In light of the fact that climate change has emerged as one difficulties confronting global food system, researchers are obligated to work toward developing fundamental crops, particularly wheat, combat environmental stress, including drought and salt. present study, genetic engineering was used transfer Arabidopsis MDAR1 gene, which controls buildup ascorbic acid (AsA) make bread wheat less likely be sensitive salt stress. The biolistic bombardment cDNA from thaliana plant encodes into Bobwhite 56 cultivar plants. A molecular investigation performed on six different transgenic lines confirm integration transgene, copy number, expression transgene. There were three copies there no association found between number transgene All data generated or analyzed during this study included in published article [and its supplementary information files].the presence expression. Compared plants not transgenic, amount accumulated twice high. ROS concentrations significantly lower compared non-transgenic under both control stress conditions, effectively reducing oxidative By cultivating T2 a greenhouse, we able determine whether they tolerate potentially damaging effects (200 mm). concluded consistently expressed gene become tolerant with improvement growth characteristics.

Язык: Английский

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Effect of Salinity Stress on Plant Growth Parameters and Antioxidant Activity In Some Cucumber Cultivars (Cucumis sativus L.) Grown Under In Vitro Conditions

Türk Tarım ve Doğa Bilimleri Dergisi, Год журнала: 2025, Номер 12(2), С. 531 - 542

Опубликована: Апрель 16, 2025

In this study, effects of salinity (NaCl) at different concentrations (0, 50, 100, 150, 200, 250, 300 mM) on the growth cucumber plants were determined in vitro conditions. The study was carried out plant tissue culture laboratory Agricultural Sciences and Technology Faculty Sivas Science University (Sivas, Türkiye) . Experiments conducted with 3 varieties. Mureshige Skoog (MS) used as basic nutrient medium. During some parameters evaluated such germination rate (%), salt tolerance index stem fresh dry weight (g), root actual water content lengths visual scale values. Also, antioxidant capacity by DPPH ABTS. When effect NaCl doses varieties evaluated, highest obtained from HD medium (173.21 μmol TE g-1 dw) analysis HC (251.06 ABTS analysis. variety 1 (94.36%) HA (96.05%). content, average 2 (91.16%) (91.71%). length (26.40 mm) (24.48 mm). Considering results although there differences among varieties, increase concentration negatively affected cucumber.

Язык: Английский

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Resilient mechanism of strigolactone (GR24) in regulating morphological and biochemical status of maize under salt stress

Biocatalysis and Agricultural Biotechnology, Год журнала: 2024, Номер 60, С. 103340 - 103340

Опубликована: Авг. 5, 2024

Язык: Английский

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Ascorbic Acid Mitigates Salt Stress in Tomato Seedlings by Enhancing Chlorophyll Synthesis Pathways

Agronomy, Год журнала: 2024, Номер 14(8), С. 1810 - 1810

Опубликована: Авг. 16, 2024

Salt stress is a critical abiotic factor that adversely affects plant growth and productivity by impairing photosynthesis. This study explores the impact of exogenous ascorbic acid (AsA) on photosynthetic performance tomato seedlings (Solanum lycopersicum L. cv. Ligeer 87-5) under salt stress. Hydroponic experiments were conducted in solar greenhouse, where subjected to following five treatments: Control, NaCl, NaCl + AsA, lycorine (LYC), LYC AsA. Our findings demonstrate significantly reduced chlorophyll carotenoid contents, levels synthesis precursors (5-aminolevulinic (ALA), porphobilinogen (PBG), uroporphyrinogen III (Urogen III), protoporphyrin IX (Proto IX), magnesium (Mg-Proto protochlorophyllide (Pchl)), essential elements (Mg, Fe, Mn, Zn, Mo, P) both roots leaves. These reductions led substantial decline net rate (Pn) compromised photosystem II (PSII). In contrast, AsA application enhanced content pigment elements, improved stomatal aperture gas exchange efficiency, boosted Furthermore, treatment mitigated negative effects protecting PSII, increased light energy utilization alleviated non-stomatal limitations. The inhibitor exacerbated detrimental stress, further reducing efficiency. conclusion, plays vital role enhancing tolerance stabilizing biosynthesis, facilitating element absorption, optimizing function. provides new approach feasible measures for improving resistance yield, which significant crop productivity, managing saline soils, promoting sustainable agricultural practices.

Язык: Английский

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