Alleviation of drought stress by melatonin foliar treatment on two flax varieties under sandy soil

Sadak, Mervat Shamoon; Bakry, Bakry Ahmed

doi:10.1007/s12298-020-00789-z

Cited by 58 publications

(27 citation statements)

References 64 publications

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“…They found that the flax varieties differed in yield components and seed productivity, Moreover, the variability among flax varieties may be expected because of the differences of these varieties in origin and growth habit, where, these flax varieties are grown for double purpose crop oil and fibres under the conditions of this trails. Moreover, these obtained results were following those obtained 9,[29][30][31][32] on different plant species in many regions of the world.…”

Section: Discussionsupporting

confidence: 84%

Glutathione Stimulates Growth and Productivity of Some Flax Varieties Grown under Sandy Soil

Bakr¹,

Sadak²,

Yo³

et al. 2021

Asian J. of Plant Sciences

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Background and Objective: Linseed is a double purpose plant and propagated as fibre, oil or double purpose plant in different countries.Glutathione is a highly significant and prevailing non-protein thiol produced in plant cells. This investigation was an attempt to evaluate the physiological role of exogenous application of glutathione on growth, some physiological indices and productivity of seven varieties of flax plants grown under sandy soil conditions. Materials and Methods: Two field experiments were carried out at the experimental station of the National Research Centre, in the 2018/2019 and 2019/2020 winter seasons, with split-plot design. Foliar applications of different concentrations of glutathione at rates were 50, 100 and 200 mg LG 1 . Results: Data clearly show significant varietal differences among the seven tested flax (Sakha-1, Sakha-2, Sakha-3, Sakha-5, Sakha-6, Giza-11 and Amon) varieties in growth, some biochemical aspects, yield and its components. Results clearly show the superiority of Sakha-5 and Sakha-1 varieties in yield and its components Moreover, results show the enhancing role of glutathione treatments on the growth and yield of the tested flax varieties through improving different physiological aspects Glutathione, 200 mg LG 1 recorded the highest values of general studied parameters. Conclusion:In conclusion, foliar treatments of different flax cultivars with glutathione in different concentrations improved the studied growth, biochemical parameters, yield and quality traits as compared with their corresponding controls of different flax varieties under sandy soil conditions.

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Section: Discussionsupporting

confidence: 84%

Glutathione Stimulates Growth and Productivity of Some Flax Varieties Grown under Sandy Soil

Bakr¹,

Sadak²,

Yo³

et al. 2021

Asian J. of Plant Sciences

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“…To maintain the osmotic potential under saline conditions, halophytes typically accumulate organic solutes and inorganic ions (e.g., Na + , K + , and Cl − ) in leaves (Guo et al, 2019 ). These osmoprotectants may provide protection for cells by raising the osmotic potential, stabilizing proteins and membranes, and maintaining the relatively higher water content under stressful conditions (Sadak and Bakry, 2020 ). In this study, cotyledons of non-salt-grown S. aralocaspica seedlings were able to maintain Na + and K + homeostasis for at least 4 weeks after emergence, whereas the level of organic solutes was significantly reduced in the cotyledons with the development progression, implying that seedlings (cotyledons) grow normally after emergence without requiring excess osmolytes in various biological processes.…”

Section: Discussionmentioning

confidence: 99%

The Developmental Delay of Seedlings With Cotyledons Only Confers Stress Tolerance to Suaeda aralocaspica (Chenopodiaceae) by Unique Performance on Morphology, Physiology, and Gene Expression

Cao

Chen

et al. 2022

Front. Plant Sci.

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Cotyledons play an important role in seedling establishment, although they may just exist for a short time and become senescent upon the emergence of euphylla. So far, the detailed function of cotyledons has not been well understood. Suaeda aralocaspica is an annual halophyte distributed in cold deserts; its cotyledons could exist for a longer time, even last until maturity, and they must exert a unique function in seedling development. Therefore, in this study, we conducted a series of experiments to investigate the morphological and physiological performances of cotyledons under salt stress at different developmental stages. The results showed that the cotyledons kept growing slowly to maintain the normal physiological activities of seedlings by balancing phytohormone levels, accumulating osmoprotectants and antioxidants, and scavenging reactive oxygen species (ROS). Salt stress activated the expression of osmoprotectant-related genes and enhanced the accumulation of related primary metabolites. Furthermore, differentially expressed transcriptional profiles of the cotyledons were also analyzed by cDNA-AFLP to gain an understanding of cotyledons in response to development and salt stress, and the results revealed a progressive increase in the expression level of development-related genes, which accounted for a majority of the total tested TDFs. Meanwhile, key photosynthetic and important salt stress-related genes also actively responded. All these performances suggest that “big cotyledons” are experiencing a delayed but active developmental process, by which S. aralocaspica may survive the harsh condition of the seedling stage.

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“…Still, most importantly, MT was discovered to enhance the non-enzymatic GSH-AsA cycle in plants. Furthermore, MT activates antioxidative enzymes such as APX, CAT, SOD, peroxide dismutase, peroxidase, dehydroascorbate reductase (DHAR), and GSH reductase during osmotic stress [ 58 , 59 , 60 ].…”

Section: Combined Hm Toxicity and Osmotic Stress In Plantsmentioning

confidence: 99%

Applications of Metabolomics for the Elucidation of Abiotic Stress Tolerance in Plants: A Special Focus on Osmotic Stress and Heavy Metal Toxicity

Mashabela

Masamba

Kappo

2023

Plants

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Plants undergo metabolic perturbations under various abiotic stress conditions; due to their sessile nature, the metabolic network of plants requires continuous reconfigurations in response to environmental stimuli to maintain homeostasis and combat stress. The comprehensive analysis of these metabolic features will thus give an overview of plant metabolic responses and strategies applied to mitigate the deleterious effects of stress conditions at a biochemical level. In recent years, the adoption of metabolomics studies has gained significant attention due to the growing technological advances in analytical biochemistry (plant metabolomics). The complexity of the plant biochemical landscape requires sophisticated, advanced analytical methods. As such, technological advancements in the field of metabolomics have been realized, aided much by the development and refinement of separatory techniques, including liquid and gas chromatography (LC and GC), often hyphenated to state-of-the-art detection instruments such as mass spectrometry (MS) or nuclear resonance magnetic (NMR) spectroscopy. Significant advances and developments in these techniques are briefly highlighted in this review. The enormous progress made thus far also comes with the dawn of the Internet of Things (IoT) and technology housed in machine learning (ML)-based computational tools for data acquisition, mining, and analysis in the 4IR era allowing for broader metabolic coverage and biological interpretation of the cellular status of plants under varying environmental conditions. Thus, scientists can paint a holistic and comprehensive roadmap and predictive models for metabolite-guided crop improvement. The current review outlines the application of metabolomics and related technological advances in elucidating plant responses to abiotic stress, mainly focusing on heavy metal toxicity and subsequent osmotic stress tolerance.

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Alleviation of drought stress by melatonin foliar treatment on two flax varieties under sandy soil

Cited by 58 publications

References 64 publications

Glutathione Stimulates Growth and Productivity of Some Flax Varieties Grown under Sandy Soil

Glutathione Stimulates Growth and Productivity of Some Flax Varieties Grown under Sandy Soil

The Developmental Delay of Seedlings With Cotyledons Only Confers Stress Tolerance to Suaeda aralocaspica (Chenopodiaceae) by Unique Performance on Morphology, Physiology, and Gene Expression

Applications of Metabolomics for the Elucidation of Abiotic Stress Tolerance in Plants: A Special Focus on Osmotic Stress and Heavy Metal Toxicity

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