Effect of titanium dioxide nanoparticle spraying on anatomical properties of Aptenia cordifolia
Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
BIOCONF20_325
تاریخ نمایه سازی: 28 اردیبهشت 1398
Abstract:
Nanoparticles are atomic or molecular collections with a minimum dimension of 1 to 100 nanometers, which have different physicochemical properties compared to their normal fabric. Today, the widespread use of these nanoparticles causes in their release into the environment. The plants as major members of the ecosystem are also affected by these nanoparticles. Due to the photocatalytic features of Titanium dioxide, it is one of the most widely used nanoparticles. In this study, the effect of titanium dioxide spraying on Aptenia cordifolia, according to completely randomized design has been examined. This examination has been operated with three replications in four concentrations (0, 0.01, 0.03 and 0.05%) of nanoparticles in different stages of the plant development. The results indicated that the number of stomata on the dorsal epidermis of the leaf did not influenced of nanoparticles, but, the number of stomata on the ventral epidermis has been increased in treated plants. The high concentration of titanium dioxide treatment caused some anatomical changes, such as increasing the diameter of the vascular apertures in the root and reducing the diameter of the vascular cylindrical region in the stem of the treated plants compared to the control plant. The diameter of vascular craters also decreased in plants under treatment with 0.05% nanoparticles compared with other plants. It seems that, decreasing diameter of vessels is the probability of increasing wall thickness due to lignin precipitation.
Keywords:
Authors
Laleh Ahmadi
Department of Plant Biology, Faculty of Natural Science, University of Tabriz
Elham Mohajel Kazemi
Department of Plant Biology, Faculty of Natural Science, University of Tabriz
Hanieh Mohajjel Shoja
Department of Plant Biology, Faculty of Natural Science, University of Tabriz