Detection of ironwood (Parrotia persica) trees tolerance to air pollution using anatomical, physiological and biochemical leaf traits

Document Type : Research Paper

Authors

1 Department of Forestry, Faculty of Natural Resources, Guilan University, Sowmeh Sara, Iran.

2 Department of environmental science and engineering faculty of natural resources, university of Guilan Sowmeh-Sara, Iran.

3 School of Forest, Fisheries, and Geomatics Sciences, University of Florida, Gainesville, FL 32611, USA.

10.22059/jfwp.2025.388038.1325

Abstract

We identified several pollution-responsive variables, including ascorbic acid, glutathione, pH, total chlorophyll, carotenoids, relative water content, total soluble sugar, proline, protein, and anatomical parameters, while also determining the air pollution tolerance index (APTI) of Parotia persica around Chamestan Industrial Park in Mazandaran Province, Iran. Three polluted stations at varying distances from the industrial park (10, 400, and 800 m) and a control station in a clean area were selected to assess the effects of pollution. The results indicated that the relative water content (RWC) of P. persica remained unchanged under pollution exposure. However, total chlorophyll content and pH decreased in leaves collected from the industrial site compared to the control. In contrast, proline, soluble sugar, and protein levels were higher in samples from the industrial site than in those from the control station. Carotenoid content decreased in P. persica under air pollution exposure. The findings also showed that air pollution led to the accumulation of ascorbic acid and glutathione in the leaves. Air pollution reduced stomatal size while increasing stomatal density in P. persica leaves. Based on APTI values, P. persica was classified as moderately tolerant to air pollution. Additionally, the adverse effects of air pollution were more pronounced at stations closer to the industrial park (stations one and two) than at the third station. Overall, P. persica can be considered a tolerant species suitable for industrial areas.

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Main Subjects

References

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Forest and Wood Products
Volume 77, Issue 4
March 2025
Pages 407-421

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