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Uptake of zinc and its effects on nutrient and chlorophyll content in seedlings | ||
| Caspian Journal of Environmental Sciences | ||
| مقالات آماده انتشار، اصلاح شده برای چاپ، انتشار آنلاین از تاریخ 21 مرداد 1404 اصل مقاله (534.98 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22124/cjes.2025.8970 | ||
| نویسندگان | ||
| Majid Maani1؛ Mir Mozaffar Fallah Chai* 2؛ Fatemeh Shariati3 | ||
| 1PhD Student, Department of Forestry, Lahijan Branch, Islamic Azad University, Lahijan, Iran | ||
| 2Department of Forestry, Lahijan Branch, Islamic Azad University, Lahijan, Iran | ||
| 33. Department of Environment, Lahijan Branch, Islamic Azad University, Lahijan, Iran | ||
| چکیده | ||
| Phytoremediation is a method in which plants are used to absorb contaminants. Heavy metals significantly affect plant distributions by competing with nutrients and limiting plant growth. In this study, three-year-old seedlings of Crataegus aronia and Juniperus polycarpos were exposed to different concentrations of zinc nitrate (0, 50, 250, and 500 ppm) in a completely randomized design with three replications. Then, the amounts of zinc uptake in different organs of C. aronia and J. polycarpos seedlings were measured by atomic absorption spectroscopy after acid digestion and total chlorophyll content was measured with a spectrophotometer after extraction. The results obtained from the analysis of variance showed that in both species, zinc accumulation increased in roots and stems by elevating the heavy metal concentration and that zinc accumulation was higher in root tissues than in stem tissues in all treatments (p < 0.05). In addition, zinc contamination decreased the concentration of all nutrient contents in leaves and stems of seedlings, and total chlorophyll decreased by 56% in J. polycarpos and 47% in C. aronia. Accordingly, it can be said that the seedlings of C. aronia and J. polycarpos have the ability to prevent the transfer of the metal to aerial parts and to lower its toxicity to the plant by accumulating zinc in the roots. It should be noted that J. polycarpos was a better accumulator of zinc than C. aronia by 33%. | ||
| کلیدواژه‌ها | ||
| Crataegus aronia؛ Heavy metals؛ Juniperus polycarpos؛ Phytoremediation | ||
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