The reactive influences of pre-sowing He-Ne laser seed irradiation and drought stress on growth, fatty acids, phenolic ingredients, and antioxidant properties of Celosia argentea

Ali, Sami I.; Gaafar, Alaa A.; Metwally, Sami A.; Habba, Ibrahim E.; khalek, Marwa Refaat Abdel

doi:10.1016/j.scienta.2019.108989

Cited by 21 publications

(20 citation statements)

References 38 publications

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“…These outcomes are consistent with other studies that have reported the negative effect of drought stress on the unsaturated-to-saturated fatty acid ratio of other crops like C. argentea. He-Ne laser see treatment improved this ratio in the present sunflower samples, in accordance with previous reports Ali et al (2020).…”

Section: Fatty Acid Profilesupporting

confidence: 93%

“…Plants may experience growth promotion or inhibition in such conditions. The response is mediated by a balance between growth promoters or inhibitors (Lymperopoulos et al, 2018;Ali et al, 2020). In the present work, the He-Ne laser seed treatments seemed to increase the level of growth promoters of sunflowers via phytochrome activation.…”

Section: Growth and Yieldmentioning

confidence: 49%

“…In recent years, many crops have been raised from He-Nelaser-treated seeds, including Arabidopsis (Dudareva et al, 2020), maize (Hasan et al, 2020), Celosia argentea (Ali et al, 2020), and sunflowers (Perveen et al, 2011). All of them have shown improved growth after He-Ne laser seed treatment, although the extent of the beneficial effects and the necessary He-Ne laser exposure time differ from species to species (Ali et al, 2020). Plant leaves are highly plastic and play a crucial role in responses to the immediate environment and stimuli.…”

Section: Growth and Yieldmentioning

confidence: 99%

“…Recent environmental fluctuations have reduced rainfall, particularly in arid and semiarid areas, thus generating stress in plants, namely stunted plant growth, physiology, and yield. Reduced crop yield under low water availability is associated with metabolic variations in plants (Ali et al, 2020;Arslan et al, 2020). To resolve this issue, drought-tolerant crops are grown in the affected areas.…”

Section: Introductionmentioning

confidence: 99%

“…Primary and secondary plant metabolism responds to variations in the applied light spectrum. This response is species and dose specific (Ali et al, 2020;Danziger and Bernstein, 2021). Metabolomic profiling is one of the advanced, sensitive, and reliable technologies.…”

Section: Introductionmentioning

confidence: 99%

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He-Ne Laser Seed Treatment Improves the Nutraceutical Metabolic Pool of Sunflowers and Provides Better Tolerance Against Water Deficit

et al. 2021

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Water-scarce areas are continually increasing worldwide. This factor reduces the quantity and quality of crops produced in affected areas. Physical seed treatments are considered economical and ecofriendly solutions for such problems. It was hypothesized that a moderately drought-tolerant crop grown from seeds treated with a He-Ne laser utilizes water-limited conditions better than plants grown from untreated seeds. A field study was conducted, growing a moderately drought tolerant crop (sunflower) with supportive seed treatment (He-Ne laser treatment at 300 mJ) for 0, 1, 2, and 3 min. Thirty-day-old plants were subjected to two irrigation conditions: 100% (normal) and 50% (water stress). Harvesting was done at flowering (60-day-old plants) at full maturity. The sunflowers maintained growth and yield under water limitation with a reduced achene number. At 50%, irrigation, there was a reduction in chlorophyll a, a+b and a/b; catalase activity; soluble sugars; and anthocyanin, alongside elevated proline. The improved chlorophyll a, a+b and a/b; metabolisable energy; nutritional value; and yield in the plants grown from He-Ne-laser-treated seeds support our hypothesis. Seeds with 2-min exposure to a He-Ne laser performed best regarding leaf area; leaf number; leaf biomass; chlorophyll a, a+b and a/b; per cent oil yield; 50-achene weight; achene weight per plant; carotenoid content; and total soluble phenolic compound content. Thereafter, the leaves from the best performing level of treatment (2 min) were subjected to high-performance-liquid-chromatography-based phenolic profiling and gas-chromatography-based fatty acid profiling of the oil yield. The He-Ne laser treatment led to the accumulation of nutraceutical phenolic compounds and improved the unsaturated-to-saturated fatty acid ratio of the oil. In conclusion, 2-min He-Ne laser seed treatment could be the best strategy to improve the yield and nutritional value of sunflowers grown in water-limited areas.

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Section: Fatty Acid Profilesupporting

confidence: 93%

Section: Growth and Yieldmentioning

confidence: 49%