Volume 14, Issue 66 (vol. 14, no. 66 2025)                   2025, 14(66): 137-156 | Back to browse issues page

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Dastakzan K, Movahhedi Dehnavi M, Farajee H, Salehi A, Alahdadi H. Improving the physiological characteristics and shoot dry weight of lemon balm (Melissa officinalis L.) by mycorrhiza under cadmium toxicity. Plant Process and Function 2025; 14 (66) : 9
URL: http://jispp.iut.ac.ir/article-1-2140-en.html
Improving the physiological characteristics and shoot dry weight of lemon balm (Melissa officinalis L.) by mycorrhiza under cadmium toxicity
Khatereh Dastakzan1 , Mohsen Movahhedi Dehnavi * 2, Hooshang Farajee1 , Amin Salehi1 , Hamid Alahdadi1
1- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
2- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran , movahhedi1354@gmail.com
Abstract:   (4 Views)
This research aimed to evaluate the effect of mycorrhizal fungi application on the physiological traits and shoot dry weight of the Melissa officinalis under cadmium toxicity in the research greenhouse of the Faculty of Agriculture, Yasouj University, in 2022. The experiment was designed as a factorial in a completely randomized design with three replications. Experimental factors included different cadmium levels (0, 5, 10, 15, 20, and 25 mg kg-1 soil) and the arbuscular mycorrhizal fungus Funneliformis moseae (non-application and application). Results showed that the maximum cadmium concentration led to a 27.45% reduction in relative water content and a 1.65-fold increase in MDA content. Mycorrhizal fungi also improved soluble sugars and leaf soluble protein content by 11.68% and 21.25%, respectively. Interaction of fungi and heavy metal showed that the lowest levels of chlorophyll a, b, and total were observed in the treatment with 25 mg kg-1 soil cadmium+without fungi application, measuring 0.308, 0.189, and 0.638 mg g-1 leaf, respectively. Furthermore, the highest activity of the catalase and peroxidase was observed under the treatment with mycorrhizal application + 25 mg kg-1 soil cadmium. In general, increasing cadmium levels negatively impacted the physiological traits of lemon balm, reducing shoot dry weight by 76.71% at the highest concentration. The highest level of this trait was achieved with mycorrhizal fungi in non-stress conditions. Therefore, the use of this biofertilizer is recommended to increase lemon balm tolerance in cadmium-contaminated soils.
Article number: 9
Keywords: Soluble sugars, Cadmium, Bio-fertilizer, MDA, Chlorophyll content
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Type of Study: Research | Subject: Toxic ions stress
Received: 2024/11/14 | Accepted: 2024/12/24 | Published: 2025/06/22
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