Volume 14, Issue 70 (vol. 14, no. 70 2026)
2026, 14(70): 11-24 |
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Razavi S M, Soleimani M, Sepehry Javan Z, Zargar M. The effects of theophylline on some physiological and biochemical
aspects of Lactuca sativa L.. Plant Process and Function 2026; 14 (70) : 2
URL: http://jispp.iut.ac.ir/article-1-2072-en.html
URL: http://jispp.iut.ac.ir/article-1-2072-en.html
1- Department of Biology, Faculty of Science, University of Mohaghegh Ardabili, Ardabil 13131561991, Iran , razavi694@gmail.com
2- Department of Biology, Faculty of Science, University of Mohaghegh Ardabili, Ardabil 13131561991, Iran
3- Department of Agrobiotechnology, Institute of Agriculture, RUDN University, 117198 Moscow, Russia
2- Department of Biology, Faculty of Science, University of Mohaghegh Ardabili, Ardabil 13131561991, Iran
3- Department of Agrobiotechnology, Institute of Agriculture, RUDN University, 117198 Moscow, Russia
Abstract: (21 Views)
Theophylline is a well-known plant compound belonging to the purine alkaloids group of plant secondary metabolites called methylxanthines. It is commonly found in plants such as tea and coffee. This study aimed to investigate the allelopathic effects of theophylline on lettuce seeds from various physiological and biochemical perspectives using different concentrations of theophylline alongside a control group. Initially, lettuce seeds were placed on plates lined with Whatman paper and cultured with distilled water as the control and a stock solution of theophylline, as well as different concentrations of theophylline (0.1 and 0.05 mg/ml) as treatments, in the incubator. After germination, the seeds were transferred to pots containing perlite. Up to the seven-leaf stage, they were treated with Hoagland solution containing theophylline at 0.1 and 0.05 mg/ml concentrations, with a 0 mg/ml concentration as the control group. The results revealed the allelopathic properties of theophylline. This substance significantly decreased seed germination rates (22% decrease) and resulted in reductions in fresh (44 and 47% decrease in shoot and root, respectively) and dry (63% decrease in shoot) weights, shoot (26% decrease) and root (90% decrease) lengths, photosynthetic activity (54% decrease), and alterations in the activity of antioxidant enzymes (30% decrease in ascorbate peroxidase and 24% increase in polyphenol oxidase). Moreover, changes in band density were observed in the protein electrophoresis pattern, indicating significant effects of theophylline on the expression of certain genes involved in protein synthesis. There is a growing interest in compounds exhibiting allelopathic properties, particularly in agricultural systems. Such studies aim to develop natural herbicides to replace synthetic counterparts.
Article number: 2
Type of Study: Research |
Subject:
others
Received: 2024/05/29 | Accepted: 2024/11/3 | Published: 2026/02/28
Received: 2024/05/29 | Accepted: 2024/11/3 | Published: 2026/02/28
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