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- Title
Evaluation of the distribution of cadmium and its toxic effects on the biological responses of Nicotiana tabacum L.
- Authors
MAHMOUDI, Parvaneh; MOHAJEL KAZEMI, Elham; MOHAJEL SHOJA, Hanieh; KOLAHI, Maryam
- Abstract
The environmental pollutant cadmium (Cd) contributes to cell destruction in plants by elevated ROS. This study investigated the effects of Cd on tobacco plants (Nicotiana tabacum L.) to understand their response to oxidative stress induced by Cd, with a focus on morphological and biochemical characteristics. The finding revealed that the increased concentration of Cd reduced the values of PLSTI, PDSTI, and RWC compared with the control. In addition, the functions of CAT, POD, and APX enzymes were increased, while SOD enzyme activity decreased. Cd significantly increased proline, antioxidant capacity, MDA, and H2O2 levels. As the concentration of Cd in the environment elevates, its accumulation in roots and shoots increases. However, the amount of Cd accumulated in the roots was greater than in the shoots. Furthermore, the accumulation of Cd in the roots reduced amount of elements such as zinc, calcium, manganese, copper, and iron in the tissues of plants. The high potential of tobacco to absorb heavy metals makes it a suitable Cd accumulator, and its non-edible nature allows its use in phytoremediation. This study helps to better understand the interaction of different antioxidant pathways with Cd toxicity and the biochemical changes resulting from oxidative stress pathways in tobacco plants.
- Subjects
CADMIUM; TOBACCO; OXIDATIVE stress; ANTIOXIDANTS; CADMIUM & the environment; HEAVY metals; PHYTOREMEDIATION
- Publication
Acta Agriculturae Slovenica, 2024, Vol 120, Issue 4, p1
- ISSN
1581-9175
- Publication type
Academic Journal
- DOI
10.14720/aas.2024.120.4.15742