The Effects of Osmosis and Thermo-Priming on Salinity Stress Tolerance in Vigna radiata L.

Sustainability, Journal Year: 2022, Volume and Issue: 14(19), P. 12924 - 12924

Published: Oct. 10, 2022

A plant’s response to osmotic stress is a complex phenomenon that causes many abnormal symptoms due limitations in growth and development or even the loss of yield. The current research aimed analyze agronomical, physiological, biochemical mechanisms accompanying acquisition salt resistance Vigna radiata L. variety ‘Ramzan’ using seed osmo- thermopriming presence PEG-4000 4 °C under induced salinity stresses 100 150 mM NaCl. Seeds were collected from CCRI, Nowshera, sowing was undertaken triplicate at Department Botany, Peshawar University, during 2018–2019 growing season. Rhizospheric soil pH (6.0), E.C (2.41 ds/m), field capacity, moisture content level estimated present study. We observed results agronomic characteristics, i.e., shoot fresh weight dry T9 (4oC + NaCl), root T4 (PEG T5 T6 NaCl) highest, followed by lowest T1 (both weights) T2 (shoot weights). Similarly, maximum minimum T6, highest T6. agronomical parameters including masses (T4, T4), leaf area index, germination area, total biomass, vigor index treatment T9, relative water use efficiency highest. Plant physiological traits such as proline, SOD enhanced T1, carotenoids T2, chlorophyll protein levels T4, whereas sugar POD treatments T7 T8. principal component analysis enclosed 63.75% variation among all biological components. These confirmed positive osmopriming (PEG) (4 °C) on most features with great tolerance low-saline (PEG), °C), T8 while it susceptible case high application. found constraining impact several priming techniques improved low salinity, which regarded economically inexpensive initiated numerous metabolic processes plants, hence decreasing time. study will have major applications for combatting problem climate change Pakistan.

Language: Английский

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Salicylic acid mitigates salt induced toxicity through the modifications of biochemical attributes and some key antioxidants in capsicum annuum

Saudi Journal of Biological Sciences, Journal Year: 2022, Volume and Issue: 29(3), P. 1337 - 1347

Published: Jan. 17, 2022

Abiotic stress causes extensive loss to agricultural yield production worldwide. Salt is one of them crucial factor which leads decreased the through detrimental effect on growth and development crops. In our study, we examined a defense substance, salicylic acid (SA 1 mM) mature vegetative (60 Days after sowing) flowering (80 DAS) stage Pusa Sadabahar (PS) variety Capsicum annuum L. plants gown under different concentrations NaCl (25, 50, 75, 100 150 maintained in identical sets pots during whole experiment. Physiological studies indicated that increase root & shoot length, fresh dry weight, number branches per plant, (number fruits plant) salt + SA treatment. Biochemical studies, enzymatic antioxidants like CAT, POX, non-enzymatic antioxidant such as ascorbic (AsA content), carotenoids, phenolics, besides other compounds proline, protein, chlorophyll contents were studied at 10 days treatment stage. The addition led lowering general, all parameters but increased same stage, especially presence NaCl; although control I (without NaCl) remained lower value than II (with SA, without NaCl). Interestingly, total phenolics higher or whereas chlorophylls treatments with NaCl. Thus, physiological concentration (1 appears be significantly effective against addition, however, proline accumulates treated sets, help developing NaCl-induced drought tolerance.

Language: Английский

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The Efficiency of Humic Acid for Improving Salinity Tolerance in Salt Sensitive Rice (Oryza sativa): Growth Responses and Physiological Mechanisms

Gesunde Pflanzen, Journal Year: 2023, Volume and Issue: 75(6), P. 2639 - 2653

Published: April 29, 2023

Abstract High-yielding rice cultivars exhibit a great performance in non-saline fields; however, their growth and productivity are greatly reduced salt-affected lands. Humic acid has promising stress-mitigating potential can be effective improving salt tolerance salinity sensitive cultivars. Herein, seeds of Giza 177 (high-yielding but salt-sensitive cultivar) were primed 40 mg/l humic acid, sown, maintained. Then physiological responses the acid-primed plants to increased levels (EC: 0.55, 3.40, 6.77, 8.00 mS/cm) evaluated at reproductive stage. Increasing induced progressive retardation plant height, leaf area, fresh dry weights. Such was associated with Na + buildup shoot root, high electrolyte leakage accumulation malondialdehyde, total soluble sugars, sucrose, glucose, proline, proteins, flavonoids, phenolics. In contrast, K , /Na ratio, carbohydrates, activity catalase, peroxidase, polyphenol oxidase. enhanced under saline conditions. The acid-induced improvement reduction toxicity, increasing regulating osmolytes concentration, enhancing activities antioxidant enzymes thus reduce oxidative stress. These results indicate that successfully salinity-induced damage, improved metabolism, maintained active irrigation.

Language: Английский

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Bio-priming with salt tolerant endophytes improved crop tolerance to salt stress via modulating photosystem II and antioxidant activities in a sub-optimal environment

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: March 9, 2023

Abiotic stress is one of the major constraints which restrain plant growth and productivity by disrupting physiological processes stifling defense mechanisms. Hence, present work aimed to evaluate sustainability bio-priming salt tolerant endophytes for improving tolerance. Paecilomyces lilacinus KUCC-244 Trichoderma hamatum Th-16 were obtained cultured on PDA medium containing different concentrations NaCl. The highest (500 mM) fungal colonies selected purified. at 61.3 × 10-6 conidia/ml about 64.9 10-3 colony forming unit (CFU) used priming wheat mung bean seeds. Twenty- days-old primed unprimed seedlings subjected NaCl treatments 100 200 mM. Results indicate that both sustain resistance in crops, however T. significantly increased (141 209%) chlorophyll content (81 189%), over control under extreme salinity. Moreover, reduced levels (22 58%) oxidative markers (H2O2 MDA) corresponded with antioxidant enzymes like superoxide dismutase (SOD) catalase (CAT) activities 110%). Photochemical attributes quantum yield (FV/FM) (14 32%) performance index (PI) (73 94%) also enhanced bio-primed plants comparison stress. In addition, energy loss (DIO/RC) was considerably less (31 46%), corresponding lower damage PS II level plants. Also, increase I P steps OJIP curve P. showed availability more active reaction centers (RC) Infrared thermographic images resistant it concluded use specifically can be an effective approach mitigate cosnequences develop a potential crop

Language: Английский

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Seed priming mitigates high salinity impact on germination of bread wheat (Triticum aestivum L.) by improving carbohydrate and protein mobilization

Plant Direct, Journal Year: 2023, Volume and Issue: 7(6)

Published: June 1, 2023

Salinity is increasingly considered as a major environmental issue, which threatens agricultural production by decreasing yield traits of crops. Seed priming useful and cost-effective technique to alleviate the negative effects salinity enable fast uniform germination. In this context, we quantified with gibberellic acid (GP), calcium chloride (CP), mannitol (MP) on seed germination three bread wheat cultivars investigated their response when grown at high conditions (200 mM NaCl). Salt exposure strongly repressed imbibition potential extended time, whereas enhanced uniformity vigor. preconditioning alleviated disruption caused salt stress varying degrees. Priming mitigating effect was agent-dependent regard water status (CP MP), ionic imbalance reserve mobilization (GP). Na

Language: Английский

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