PGPR-Mediated Salt Tolerance in Maize by Modulating Plant Physiology, Antioxidant Defense, Compatible Solutes Accumulation and Bio-Surfactant Producing Genes

Plants, Journal Year: 2022, Volume and Issue: 11(3), P. 345 - 345

Published: Jan. 27, 2022

Salinity stress is a barrier to crop production, quality yield, and sustainable agriculture. The current study investigated the plant growth promotion, biochemical molecular characterization of bacterial strain Enterobacter cloacae PM23 under salinity (i.e., 0, 300, 600, 900 mM). E. showed tolerance up 3 M NaCl when subjected stress. Antibiotic-resistant Iturin C (ItuC) bio-surfactant-producing genes (sfp srfAA) were amplified in PM23, indicating its multi-stress resistance potential biotic abiotic stresses. Moreover, upregulation stress-related (APX SOD) helped mitigate improved growth. Inoculation enhanced growth, biomass, photosynthetic pigments Bacterial distinctive growth-promoting traits such as indole-3-acetic acid (IAA), siderophore, ACC deaminase, exopolysaccharides production To alleviate stress, inoculation radical scavenging capacity, relative water content, soluble sugars, proteins, total phenolic, flavonoid content maize compared uninoculated (control) plants. elevated levels antioxidant enzymes osmoprotectants (Free amino acids, glycine betaine, proline) noticed inoculated plants control significantly reduced oxidative markers These findings suggest that tolerant could enhance by mitigating salt provide baseline ecofriendly approach address for

Language: Английский

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Bacillus mycoides PM35 Reinforces Photosynthetic Efficiency, Antioxidant Defense, Expression of Stress-Responsive Genes, and Ameliorates the Effects of Salinity Stress in Maize

Life, Journal Year: 2022, Volume and Issue: 12(2), P. 219 - 219

Published: Jan. 30, 2022

Soil salinity is one of the abiotic constraints that imbalance nutrient acquisition, hampers plant growth, and leads to potential loss in agricultural productivity. Salt-tolerant growth-promoting rhizobacteria (PGPR) can alleviate adverse impacts salt stress by mediating molecular, biochemical, physiological status. In present study, bacterium Bacillus mycoides PM35 showed resistance up 3 M NaCl exhibited features. Under stress, halo-tolerant B. significant traits, such as production indole acetic acid, siderophore, ACC deaminase, exopolysaccharides. Inoculation alleviated plants enhanced shoot root length under (0, 300, 600, 900 mM). The enhancing photosynthetic pigments, carotenoids, radical scavenging capacity, soluble sugars, protein content inoculated maize compared non-inoculated plants. addition, significantly boosted antioxidant activities, relative water content, flavonoid, phenolic osmolytes while reducing electrolyte leakage, H2O2, MDA control Genes conferring tolerance (CzcD, sfp, srfAA genes) were amplified PM35. Moreover, all reactions are accompanied upregulation stress-related genes (APX SOD). Our study reveals capable promoting growth increasing

Language: Английский

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Bacillus thuringiensis PM25 ameliorates oxidative damage of salinity stress in maize via regulating growth, leaf pigments, antioxidant defense system, and stress responsive gene expression

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: July 28, 2022

Soil salinity is the major abiotic stress that disrupts nutrient uptake, hinders plant growth, and threatens agricultural production. Plant growth-promoting rhizobacteria (PGPR) are most promising eco-friendly beneficial microorganisms can be used to improve responses against biotic stresses. In this study, a previously identified B. thuringiensis PM25 showed tolerance up 3 M NaCl. The Halo-tolerant Bacillus demonstrated distinct enhance activities under stress. Antibiotic-resistant Iturin C ( ItuC ) bio-surfactant-producing sfp srfAA genes confer stresses were also amplified in PM25. Under stress, physiological molecular processes followed by over-expression of stress-related (APX SOD) results detected inoculation substantially improved phenotypic traits, chlorophyll content, radical scavenging capability, relative water content significantly increased antioxidant enzyme levels inoculated maize as compared uninoculated plants. addition, PM25-inoculation dramatically soluble sugars, proteins, total phenols, flavonoids reduced oxidative burst Furthermore, PM25-inoculated plants had higher compatible solutes than controls. current plays an important role reducing influencing defense systems genes. These findings suggest multi-stress tolerant could growth mitigating salt which might innovative tool for enhancing yield productivity.

Language: Английский

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Nano-Priming Techniques for Plant Physio-Biochemistry and Stress Tolerance

Journal of Plant Growth Regulation, Journal Year: 2023, Volume and Issue: 42(11), P. 6870 - 6890

Published: April 8, 2023

Language: Английский

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Bacterial-Mediated Salinity Stress Tolerance in Maize (Zea mays L.): A Fortunate Way toward Sustainable Agriculture

ACS Omega, Journal Year: 2023, Volume and Issue: 8(23), P. 20471 - 20487

Published: May 26, 2023

Sustainable agriculture is threatened by salinity stress because of the low yield quality and crop production. Rhizobacteria that promote plant growth modify physiological molecular pathways to support development reduce abiotic stresses. The recent study aimed assess tolerance capacity impacts Bacillus sp. PM31 on growth, physiological, responses maize stress. In comparison uninoculated plants, inoculation improved agro-morphological traits [shoot length (6%), root (22%), height (16%), fresh weight (39%), dry (29%), leaf area (11%)], chlorophyll [Chl a (17%), Chl b (37%), total chl (22%)], carotenoids (15%), proteins (40%), sugars (43%), relative water (11%), flavonoids phenols (23%), radical scavenging (13%), antioxidants. PM31-inoculated plants showed reduction in oxidative indicators [electrolyte leakage (12%), H2O2 (9%), MDA (32%)] as compared under increased level osmolytes [free amino acids (36%), glycine betaine proline (11%)]. enhancement was further validated profiling PM31. Moreover, these mechanisms were accompanied upregulation stress-related genes (APX SOD). Our found has crucial substantial role reducing through processes, which may be used an alternative approach boost production yield.

Language: Английский

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Nanoparticle-mediated defense priming: A review of strategies for enhancing plant resilience against biotic and abiotic stresses

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 213, P. 108796 - 108796

Published: June 10, 2024

Language: Английский

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Nanoprimers in sustainable seed treatment: Molecular insights into abiotic-biotic stress tolerance mechanisms for enhancing germination and improved crop productivity

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175118 - 175118

Published: Aug. 2, 2024

Language: Английский

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Physiological and biochemical effects of biochar nanoparticles on spinach exposed to salinity and drought stresses

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(9), P. 14103 - 14122

Published: Jan. 25, 2024

Language: Английский

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Differences in growth, ionomic and antioxidative enzymes system responded to neutral and alkali salt exposure in halophyte Haloxylon ammodendron seedlings

Plant Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: 220, P. 109492 - 109492

Published: Jan. 9, 2025

Language: Английский

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Seed Priming with Carbon Nanomaterials Improves the Bioactive Compounds of Tomato Plants under Saline Stress

Plants, Journal Year: 2022, Volume and Issue: 11(15), P. 1984 - 1984

Published: July 30, 2022

The consumption of food with a high content bioactive compounds is correlated the prevention chronic degenerative diseases. Tomato exceptional nutraceutical value; however, saline stress severely affects yield, quality fruits, and agricultural productivity this crop. Recent studies have shown that seed priming can mitigate or alleviate negative effects caused by type stress. However, use carbon nanomaterials (CNMs) in technique has not been tested for purpose. In present study, tomato nanotubes (CNTs) graphene (GP) (50, 250, 500 mg L−1) two controls (not sonicated sonicated) were evaluated based on photosynthetic pigments leaves; physicochemical parameters fruits; presence enzymatic non-enzymatic antioxidant compounds, carotenoids, biomarkers such as hydrogen peroxide (H2O2) malondialdehyde (MDA) leaves fruits plants without (50 mM NaCl). results show combination CNTs GP increased chlorophylls (9.1–21.7%), ascorbic acid (19.5%), glutathione (≈13%), proteins (9.9–11.9%), phenols (14.2%) leaves. addition activity enzymes (CAT, APX, GPX, PAL). Likewise, there was also slight increase H2O2 (by 20.5%) MDA (3.7%) Salinity affected fruits. physico-chemical both stressed non-stressed modified GP. Higher contents total soluble solids (25.9%), (up to 144.85%), flavonoids 37.63%), (≈28%), lycopene (12.4–36.2%) observed. subjected modifies improves defense system, suggesting possible protection plant from impacts salinity. analysis mechanism action CNMs through priming, greater depth suggested, perhaps omics sciences.

Language: Английский

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