Drought stress responses and inducing tolerance by seed priming approach in plants

Saha, Debanjana; Choyal, Prince; Mishra, Udit Nandan; Dey, Prajjal; Bose, Bandana; MD, Prathibha; Gupta, N. K.; Mehta, Brijesh K.; Kumar, Pawan; Pandey, Saurabh; Chauhan, Jyoti; Singhal, Rajesh Kumar

doi:10.1016/j.stress.2022.100066

Cited by 33 publications

(8 citation statements)

References 154 publications

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“…Similarly, at all alkalinity stages, the activities of SOD upsurge with silicon concentration and they hiked from 4.12 to 13.2 (25 mM), 7.3 to 22.0 (50 mM), and 10.5 to 39.7 (75 mM), respectively. Further, seed priming improves the antioxidant defense mechanism via moderating the antioxidant enzymes (Saha et al, 2022). Peroxidase activity Significant influence of alkali stress levels and silicon levels on peroxidase activity over non-stressed soil and non-primed (Figure 4).…”

Section: Antioxidants Activity Superoxide Dismutasementioning

confidence: 99%

Impact of Silicon Seed Priming on Osmoregulants, Antioxidants, and Seedling Growth of Maize Grown under Chemo-Stress

Natarajan,

Venkataraman,

Pitchamuthu

et al. 2022

World Journal of Environmental Biosciences

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Seed priming with silicon is an effective approach in combating stress conditions and pave way for good growth. A pot experiment was conducted with treatment schedule viz., Silicon seed priming @ 0, 1, and 2mM through silicon metasilicates and alkalinity stress levels viz., 0,25,50 and 75 mM produced by totaling with sodium carbonate. The trial was taken up through FCRD and replicated thrice with maize var CO8. The crop was grown up to the vegetative stage. The outcome of the experiment was that osmoregulants and anti-oxidants were higher in maize plants that did not receive silicon. The phenol and soluble protein contents increased by silicon priming under normal and alkali stress soil, while proline content was reduced. At all-silicon levels, osmoprotectants showed a positive trend with an increase in stress levels and maximum increase in phenol content (60.4µg/g) and soluble protein (30.2 mg/g DW) was seen with 75 mM alkaline stress in the presence of 2 mM silicon. Anti-oxidant enzymes like SOD, peroxidase, and catalase activities increased with stress levels and increased further in the presence of silicon priming. At all-silicon levels, peroxidase, SOD, and catalase activities in maize increased with stress levels andthe highest value of 48.1 units mg -1 protein, 0.412 U mg -1 and 17.2 U mg -1 , respectively was noticed with 75 mM in the presence of 2mM Si. Maize seedling growth and dry weight showed a negative trend under alkali stress and turn over effect was observed with seed priming of maize seeds with silicon.

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Section: Antioxidants Activity Superoxide Dismutasementioning

confidence: 99%

Impact of Silicon Seed Priming on Osmoregulants, Antioxidants, and Seedling Growth of Maize Grown under Chemo-Stress

Natarajan,

Venkataraman,

Pitchamuthu

et al. 2022

World Journal of Environmental Biosciences

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“…Drought is an abiotic stress that occurs when plants are subjected to prolonged water deficit. That stress could have various origins (atmospheric due to low precipitation, agricultural linked to irrigation systems, soil because of surface and underground water scarcity, and physiological resulting from high transpiration) [ 35 ]. At the vegetative stage, drought affects the crucial metabolic processes, which have a repercussion on the final plant growth.…”

Section: Discussionmentioning

confidence: 99%

Functional Dissection of the Physiological Traits Promoting Durum Wheat (Triticum durum Desf.) Tolerance to Drought Stress

Ltaief

Krouma

2023

Plants

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In Tunisia’s arid and semi-arid lands, drought stress remains the most critical factor limiting agricultural production due to low and irregular precipitation. The situation is even more difficult because of the scarcity of underground water for irrigation and the climate change that has intensified and expanded the aridity. One of the most efficient and sustainable approaches to mitigating drought stress is exploring genotypic variability to screen tolerant genotypes and identify useful tolerance traits. To this end, six Tunisian wheat genotypes (Triticum durum Desf.) were cultivated in the field, under a greenhouse and natural light, to be studied for their differential tolerance to drought stress. Many morpho-physiological and biochemical traits were analyzed, and interrelationships were established. Depending on the genotypes, drought stress significantly decreased plant growth, chlorophyll biosynthesis, and photosynthesis; stimulated osmolyte accumulation and disturbed water relations. The most tolerant genotypes (salim and karim) accumulated more potassium (K) and proline in their shoots, allowing them to maintain better tissue hydration and physiological functioning. The osmotic adjustment (OA), in which potassium and proline play a key role, determines wheat tolerance to drought stress. The calculated drought index (DI), drought susceptible index (DSI), drought tolerance index (DTI), K use efficiency (KUE), and water use efficiency (WUE) discriminated the studied genotypes and confirmed the relative tolerance of salim and karim.

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“…Plants inoculated with rhizobial isolates had higher proline levels when water was scarce. The up-regulation of the proline biosynthetic pathway resulted in a larger concentration of proline in the cell, which aids in the preservation of the cell water status and protects the membranes during drought stress (Saha et al, 2022).…”

Section: Proline Accumulation Under Drought Stressmentioning

confidence: 99%

Impact of Silicon and Some Rhizobial Species on Growth and Productivity of Tomato Under Different Irrigation Periods-North Sinai

Habib

Abdelaziz²,

Hagab³

et al. 2022

Egyptian Journal of Desert Research

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rrigation period is one of the significant factors affecting the growth, productivity, and yield of tomato plants. The study of increasing the period irrigation on tomato production is an important study of the effect of drought. The present investigation was carried out during the seasons of 2020/2021 in newly reclaimed arid land in the Agricultural Experimental Station of the Desert Research Center at Baloza Station, North Sinai Governorate (31° 32 03 N and 32° 362 03 E). The experimental results indicated that the increase in irrigation periods and foliar spraying foliar with silicon and microbial rhizobia in addition to the recommended doses of mineral fertilizers led to an increase in the yield of fresh and dry yield of tomato fruit and the nutrients content of leaves and fruits significantly increased. The average of tomato fruits accumulated in excess of biomass as total protein and total antioxidant content were increased by foliar spraying with silicon and also by inoculation of roots of the seedling by rhizobia. Proline content and water usage efficiency (WUE) in fruits were enhanced by various irrigation regimes. In comparison to the control, the irrigation water use efficiency (WUE) and proline content rose with the application of silicon and rhizobia but with less irrigation time. The microbial densities and activity under drought stress were boosted by the simultaneous application of silicon and rhizobia. It is notable that, soil dehydrogenase increased significantly with increasing irrigation period from 60 to 120 min, the highest mean values (1.031 μmol triphenyl formazan/g dry soil) were recorded at 120 min of field capacity of water requirement.

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Drought stress responses and inducing tolerance by seed priming approach in plants

Cited by 33 publications

References 154 publications

Impact of Silicon Seed Priming on Osmoregulants, Antioxidants, and Seedling Growth of Maize Grown under Chemo-Stress

Impact of Silicon Seed Priming on Osmoregulants, Antioxidants, and Seedling Growth of Maize Grown under Chemo-Stress

Functional Dissection of the Physiological Traits Promoting Durum Wheat (Triticum durum Desf.) Tolerance to Drought Stress

Impact of Silicon and Some Rhizobial Species on Growth and Productivity of Tomato Under Different Irrigation Periods-North Sinai

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