PJB-2025-1503
Mitigating arsenic stress in wheat with iron-lysine foliar application: impacts on growth, photosynthesis, organic acid exudation, and arsenic accumulation
Ghulam Yasin, Sadia Javed, Arish Laila, Mutahira Azam, Mohamed A. El-Sheikh, Rattandeep Singh and Shafaqat Ali
Abstract
Arsenic (As) toxicity poses a significant threat to plant growth, even at minute concentrations, compromising growth and physiological functions. However, the application of iron−lysine (Fe−lys) has shown potential in ameliorating these adverse effects, enhancing plant growth and composition. In this study, we conducted a pot experiment to investigate the effects of varying levels of Fe−lys (0, 5, and 10 mM) on wheat plants grown under As stress conditions (0, 50, and 100 µM). Our findings reveal that increasing As concentrations in the soil led to a decline in plant growth, biomass, chlorophyll content, and gas exchange characteristics, while simultaneously increasing the exudation patterns of organic acids and As accumulation in the plants. Conversely, the application of Fe−lys markedly improved plant growth and biomass, chlorophyll content, and gas exchange parameters, and reduced the exudation of organic acids and As accumulation. These results underscore the efficacy of Fe−lys in counteracting the detrimental effects of As stress, suggesting its utility as a viable strategy to boost crop yield and biomass in As-contaminated soils. The study highlights the potential of Fe-lys application as a practical agronomic intervention to mitigate arsenic toxicity in wheat, offering insights into improving plant resilience and productivity under environmental stress conditions
To Cite this article:
Yasin, G., S. Javed, A. Laila, M. Azam, M.A. El-Sheikh, R. Singh and S. Ali. 2025. Mitigating arsenic stress in wheat with iron-lysine foliar application: impacts on growth, photosynthesis, organic acid exudation, and arsenic accumulation. Pak. J. Bot., 57(1): DOI: http://dx.doi.org/10.30848/PJB2025-1(14)
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