Volume 13, Issue 63 (vol. 13, no. 63 2024)
2024, 13(63): 377-388 |
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Shahabivand S, Aghaee A, Yousefnezhad E. The effect of the endophytic fungus Serendipita indica on some growth characteristics of basil plants under lead toxicity in soil. Plant Process and Function 2024; 13 (63) : 22
URL: http://jispp.iut.ac.ir/article-1-2023-en.html
URL: http://jispp.iut.ac.ir/article-1-2023-en.html
1- Department of Biology, Faculty of Basic Sciences, University of Maragheh, Maragheh, Iran , shahabi70@yahoo.com
2- Department of Biology, Faculty of Basic Sciences, University of Maragheh, Maragheh, Iran
2- Department of Biology, Faculty of Basic Sciences, University of Maragheh, Maragheh, Iran
Abstract: (75 Views)
Root symbiotic endophyte fungi play an important role in increasing host efficiency in soils contaminated by heavy metals. In this research, in order to investigate the beneficial effects of S. indica in reducing the negative effect of lead toxicity in basil (Ocimum basilicum L.), a factorial experiment was conducted in the form of a completely randomized design as a pot experiment with four replicates in the research greenhouse of the University of Maragheh. The treatments were the application of S. indica (presence of fungus and absence of fungus) and lead treatment at four levels (400, 600 and 800 mg/kg soil). The lead stress had a negative effect on the basil plant, so that it decreased the percentage of colonization, dry weights of root and shoot, the amount of photosynthetic pigments, and also increased the activity of the antioxidant enzymes guaiacol peroxidase and ascorbate peroxidase. Application of endophytic fungus as a beneficial stimulant had positive effects on the studied parameters, so that it significantly increased the percentage of colonization, dry weight of shoot (14.9-46.7%), dry weight of root (5-54%), the amounts of chlorophyll a (8-27.8%) and b (9.7-54%) and the activity of guaiacol peroxidase (218-580%) and ascorbate peroxidase (150-273%) enzymes. By increasing lead concentration in the soil, the accumulation of lead in the roots (125-428%) and leaves (56-248%) increased, and at all levels of lead in the soil, the amount of lead in the roots was higher than that of shoots. Application of the fungus in the soil significantly increased the amount of lead in the roots and shoot. These results showed that S. indica, as a biological stimulant, by increasing growth indicators, photosynthetic pigments and the activity of antioxidant enzymes, can partially deal with lead toxicity, and by reducing the harmful effects of lead under all concentrations of lead in soil, it increases basil plant performance in lead-contaminated soil.
Article number: 22
Type of Study: Research |
Subject:
Toxic ions stress
Received: 2024/01/20 | Accepted: 2024/05/28 | Published: 2024/12/24
Received: 2024/01/20 | Accepted: 2024/05/28 | Published: 2024/12/24
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