Effect of gibberellic acid and titanium dioxide nanoparticles on growth, antioxidant defense system and mineral nutrient uptake in wheat

Autor: Tahira Yasmeen, Muhammad Zia ur Rehman, Azka Iftikhar, Atif A. Bamagoos, Muhammad Asrar, Shafaqat Ali, Khalid Mahmud Hussaini, Hesham F. Alharby, Muhammad Rizwan, Basmah M. Alharbi
Rok vydání: 2021
Předmět:
inorganic chemicals
Antioxidant
Health
Toxicology and Mutagenesis
medicine.medical_treatment
0211 other engineering and technologies
Cereals
02 engineering and technology
010501 environmental sciences
medicine.disease_cause
01 natural sciences
Environmental pollution
Antioxidants
chemistry.chemical_compound
Nutrient
mental disorders
medicine
Soil Pollutants
GE1-350
Food science
Gibberellic acid
Triticum
0105 earth and related environmental sciences
Titanium
021110 strategic
defence & security studies
Minerals
Toxicity
Chemistry
Public Health
Environmental and Occupational Health
technology
industry
and agriculture
food and beverages
Biological Transport
General Medicine
Nutrients
respiratory system
APX
Pollution
Gibberellins
Phytohormones
Environmental sciences
Plant Leaves
Oxidative Stress
Point of delivery
TD172-193.5
Chlorophyll
Titanium dioxide
Nanoparticles
Oxidative stress
Zdroj: Ecotoxicology and Environmental Safety, Vol 221, Iss, Pp 112436-(2021)
ISSN: 1090-2414
Popis: Nanoparticles (NPs), as a novel source of industrial materials, have been extensively used in recent years which ultimately ends up in soils and may cause toxic effects on plants. Gibberellic acid (GA), phytohormone, has ability to minimize abiotic stresses in plants. The role of GA in minimizing titanium dioxide (TiO2) NPs stress in plants is still unknown. In current study, soil was spiked with TiO2 NPs (0, 100, 200, 400, 600 mg/kg) while GA was foliar-sprayed at different concentrations during wheat growth. The findings revealed that TiO2 NPs increased the growth, chlorophyll contents, and nutrient (P, K, Fe, Mn) concentrations in tissues till 400 mg/kg and then decrease was observed at 600 mg/kg level of NPs whereas the values of these parameters were higher compared to control irrespective of NPs levels. The NPs enhanced the antioxidant activities (SOD, POD, CAT, APX) and reduced the oxidative stress (EL, H2O2, MDA) in leaves over the control. Foliar GA further improved the growth, yield, nutrients and antioxidant activities while minimized the oxidative stress compared to respective sole NPs- treatments. The interactive effects of NPs and GA were dose dependent. The results proved that studied doses of TiO2 NPs were not toxic to wheat plants except the highest level (600 mg/kg) used and GA positively affected the yield of wheat under TiO2 NPs application. The GA can be used to improve crop growth in the presence of NPs which, however, needs further investigation at higher doses of TiO2 NPs in various crops.
Databáze: OpenAIRE
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