Zeolite Amendment Influences Physiological Performance, Osmotic Adjustment, and Antioxidant Defense of Mentha spp. to Water Deficit Stress
Abstract
Water scarcity, exacerbated by global warming and climate change, significantly limits plant growth, productivity, and quality. Given the medicinal and economic value of mint (Mentha spp.) and the importance of water use management for plant production, this study assessed the potential of zeolite to alleviate drought stress in mint cultivation. The study was conducted as a factorial experiment arranged in a randomized complete block design with three replications. The experimental factors consisted of two mint species (peppermint and spearmint), three treatments of zeolite (0, 20, and 40 g kg-1 soil), and three levels of irrigation at 40%, 70%, and 100% of field capacity (FC). Results showed that under severe water deficit, in 40% FC, plant height, leaf number, aerial dry weight, chlorophyll, carotenoid, and potassium concentrations were significantly reduced in both species. In contrast, drought stress increased levels of osmoprotectants and stress-related metabolites, including soluble sugars, proline, anthocyanins, phenolic compounds, flavonoids, and antioxidative defense, including guaiacol peroxidase (GPX) and ascorbate peroxidase (APX) enzymes. Zeolite application at both 20 and 40 g kg-1 soil improved plant growth parameters, chlorophyll content, proline accumulation, sugar and phenolic compound levels, antioxidant enzyme activities, and mineral content (particularly potassium and calcium) under water-limited conditions. Under severe drought (40% FC), zeolite efficiency varied by species: 40 g kg-1 was most effective in spearmint, whereas 20 g kg-1 was optimal for proline accumulation in peppermint. These findings demonstrate that the application of zeolite is an effective strategy for enhancing physiological performance and drought tolerance in mint species.
Keywords
References
- Anjum S A, Xie X Y, Wang L C, Saleem M F, Man C & Lei W (2011). Morphological, physiological and biochemical responses of plants to drought stress. African Journal of Agricultural Research 6: 2026- 2032 DOI:10.5897/AJAR10.027
- Arnon D I (1949). Copper enzymes in isolated chloroplasts. Polyphenoloxidase in Beta vulgaris. Plant Physiol 24: 1-15 DOI:10.1104/pp.24.1.1
- Ashraf M & Foolad M R (2007). Roles of glycine betaine and proline in improving plant abiotic stress resistance. Environmental and Experimental Botany 59: 206-216 DOI:10.1016/j.envexpbot.2005.12.006
- Ashraf M & Harris P J C (2013). Photosynthesis under stressful environments: An overview. Photosynthetica 51: 163-190 DOI:10.1007/s11099-013-0021-6
- Azough A, Marashi S K & Babaeinejad T (2017). Growth characteristics and response of wheat to cadmium, nickel and magnesium sorption affected by zeolite in soil polluted with armaments. Journal of Advances in Environmental Health Research 5(3):163-171 DOI:10.22102/jaehr.2017.74387.1005
- Baghbani-Arani A, Modarres-Sanavy S A M, Mashhadi-Akbar-Boojar M & Mokhtassi-Bidgoli A (2017). Towards improving the agronomic performance, chlorophyll fluorescence parameters and pigments in fenugreek using zeolite and vermicompost under deficit water stress. Industrial Crop and Products 109: 346–357 DOI:10.1016/j.indcrop.2017.08.049
- Bahador M & Tadayon M (2018). Effect of deficit irrigation and zeolite levels on phenology, oil yield and water use efficiency of hemp. Iranian Journal of Field Crop Science 49: 25-38 DOI:10.22059/ijfcs.2017.238306.654354
- Bates L S, Waldren R P & Teare I D (1973). Rapid determination of free proline for water-stress studies. Plant and soil 39(1): 205-207 DOI:10.1007/BF00018060
Details
Primary Language
English
Subjects
Medicinal and Aromatic Plants
Journal Section
Research Article
Authors
Hossin Rahdar
This is me
0000-0002-2794-4242
Iran
Mohammad Ali Karimian
This is me
0000-0001-5382-3519
Iran
Pegah Sayyad-Amin
This is me
0000-0002-5520-6415
Iran
Publication Date
October 12, 2026
Submission Date
November 24, 2025
Acceptance Date
February 10, 2026
Published in Issue
Year 2026 Volume: 32 Number: 4