Volume 13, Issue 60 (vol. 13, no. 60 2024)
2024, 13(60): 303-326 |
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Saman M, Sepehri A. Effect of foliar spraying of alleviating stress compounds on photosynthesis indices and dry matter of proso millet (Panicum miliaceum) under zinc stress and Piriformospora indica fungus. Plant Process and Function 2024; 13 (60) : 18
URL: http://jispp.iut.ac.ir/article-1-1978-en.html
URL: http://jispp.iut.ac.ir/article-1-1978-en.html
1- Department of Plant Production and Genetics, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran; Department of Agriculture, Payame Noor University, Tehran, Iran
2- Department of Plant Production and Genetics, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran ,sepehri2748@gmail.com
2- Department of Plant Production and Genetics, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran ,
Abstract: (300 Views)
Contamination of agricultural lands with heavy metals is one of the important environmental problems that endanger the growth and yield of plants. The present experiment was carried out to investigate the possibility of using the biological potential of the fungus Piriformospora indica along with the use of biochemical oxidative stress-alleviating compounds to reduce the negative effects of zinc toxicity stress in proso millet plants. The experiment was conducted in a factorial, completely randomized design with three replicates. The investigated factors consist of four concentrations of zinc (0, 250, 500 and 750 mg per kilogram of soil), P. indica fungus at two levels (inoculation and non-inoculation) and foliar spraying of stress-reducing compounds at three levels (sodium selenate, sodium nitroprusside (SNP) and water). The results showed that the leaf greenness index, net photosynthesis rate, stomatal conductance, substomatal CO2 concentration and transpiration rate of stressed plants were significantly lower than control. In addition, during zinc toxicity stress, the total dry matter and seed dry matter of plants also decreased. Inoculation with fungus or treatment with selenium and SNP improved chlorophyll content, photosynthetic parameters, growth and yield of plants, and the highest values of the above parameters were obtained in the presence of fungus and simultaneous use of selenium or SNP. Foliar spraying of stress-alleviating compounds was also associated with an increase in the proline content of plants. In conclusion, considering that the highest amount of photosynthetic parameters, total dry matter and seed dry matter, along with the lowest amount of zinc translocation factor, were obtained in the presence of the fungus and the simultaneous use of selenium or SNP, it seems that the utilization of synergistic effects of stress reducing compounds, especially SNP, in the presence of P. indica can be considered a proper approach to reduce the negative effects of excess zinc stress and increase millet plant tolerance.
Article number: 18
Type of Study: Research |
Subject:
Toxic ions stress
Received: 2023/10/30 | Accepted: 2023/12/25 | Published: 2024/06/18
Received: 2023/10/30 | Accepted: 2023/12/25 | Published: 2024/06/18
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