Scholarlink

<p>Globally, salinity is one of the major abiotic stresses affecting agricultural production. Nanotechnology is the best solution to the continuously growing world population and improves the tolerance and productivity of the crop. The present study aimed to determine the effects of various treatments of glutamic acid-capped hydroxyapatite nanoparticles (Glu-HANPs) on the morpho-physio-chemical parameters of <i>Helianthus annuus</i> L. under different concentrations of induced salt stress. Glu-HANPs were biologically synthesized and characterized using X-ray Diffraction Analysis (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM). The pot experiment was conducted in the botanical garden of, University of Peshawar. The seeds of <i>H. annuus</i> were primed with various concentrations of nanoparticles (10, 50, 100&#xa0;mg/L) and grown in pots under varying concentrations of salts (0.05, 0.1, 0.2&#xa0;M). The results showed that salinity stress reduced the morphological and biochemical parameters of <i>H. annuus</i>. However, application of Glu-HANPs alleviated salt stress effects. Morphological parameters improved, including germination (40.7%), fresh biomass (44.7%), dry biomass (16.7%), moisture content (51%), and leaf area (40%). Physiochemical parameters also increased, with chlorophyll a (42%), chlorophyll b (32.6%), carotenoids (27.3%), proteins (49.7%), and carbohydrates (59.4%) higher than both control and salt-stressed plants. Further, antioxidant enzymes were enhanced at the highest concentrations of both Glu-HANPs and salinity, including peroxidase (POD) (59.4%), superoxide dismutase (SOD) (77.9%), catalase (35.3%), and ascorbic peroxidase (56.6%), while lipid peroxidation decreased by up to 12%. The outcomes of the present study indicate that Glu-HANPs significantly influenced biochemical and physiological parameters of <i>H. annuus</i> under salinity stress. This study demonstrates the possibility of glutamic acid-capped hydroxyapatite nanoparticles as an eco-friendly technology of improving sunflowers’ resistance to salt stress. In order to verify Glu-HANPs effectiveness and safety in a variety of environmental settings, future research should concentrate on field-scale validation and molecular-level studies.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The ameliorative effects of glutamic acid-capped hydroxyapatite nanoparticles on the physio-chemical parameters of sunflower (Helianthus annuus L.) under induced salt stress

  • 期刊论文

  • 发表日期：

    2026年2月9日

查看全文
  • Seemab Akhtar,
  • Irfan Ullah,
  • Muhammad Adnan,
  • Javed Nawab,
  • Rehman Ullah

摘要

Globally, salinity is one of the major abiotic stresses affecting agricultural production. Nanotechnology is the best solution to the continuously growing world population and improves the tolerance and productivity of the crop. The present study aimed to determine the effects of various treatments of glutamic acid-capped hydroxyapatite nanoparticles (Glu-HANPs) on the morpho-physio-chemical parameters of Helianthus annuus L. under different concentrations of induced salt stress. Glu-HANPs were biologically synthesized and characterized using X-ray Diffraction Analysis (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM). The pot experiment was conducted in the botanical garden of, University of Peshawar. The seeds of H. annuus were primed with various concentrations of nanoparticles (10, 50, 100 mg/L) and grown in pots under varying concentrations of salts (0.05, 0.1, 0.2 M). The results showed that salinity stress reduced the morphological and biochemical parameters of H. annuus. However, application of Glu-HANPs alleviated salt stress effects. Morphological parameters improved, including germination (40.7%), fresh biomass (44.7%), dry biomass (16.7%), moisture content (51%), and leaf area (40%). Physiochemical parameters also increased, with chlorophyll a (42%), chlorophyll b (32.6%), carotenoids (27.3%), proteins (49.7%), and carbohydrates (59.4%) higher than both control and salt-stressed plants. Further, antioxidant enzymes were enhanced at the highest concentrations of both Glu-HANPs and salinity, including peroxidase (POD) (59.4%), superoxide dismutase (SOD) (77.9%), catalase (35.3%), and ascorbic peroxidase (56.6%), while lipid peroxidation decreased by up to 12%. The outcomes of the present study indicate that Glu-HANPs significantly influenced biochemical and physiological parameters of H. annuus under salinity stress. This study demonstrates the possibility of glutamic acid-capped hydroxyapatite nanoparticles as an eco-friendly technology of improving sunflowers’ resistance to salt stress. In order to verify Glu-HANPs effectiveness and safety in a variety of environmental settings, future research should concentrate on field-scale validation and molecular-level studies.