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  • Open Access

    ARTICLE

    Melatonin Priming Enhances Potassium Dichromate Stress Tolerance and Morpho-Physiological Performance via Genetic Modulation in Melon (Cucumis melo L.) Plant

    Tai Liu1,#, Huichun Xu1,#, Sikandar Amanullah2,*, Ye Che1, Ling Zhang1, Zeyu Jiang1, Weiyi Bi1, Lei Zhu1, Di Wang1,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.12, pp. 4117-4137, 2025, DOI:10.32604/phyton.2025.074131 - 29 December 2025

    Abstract Heavy metal accumulation in agricultural soil is primarily driven by pesticides, polluted water, and industrial gas emissions, which pose threats to sustainable crop production. Chromium (Cr) stress has an adverse impact on plant development and metabolism, but approaches to reduce its toxicity and enhance plant resistance remain limited. Melatonin is a potent antioxidant involved in regulating various morpho-physiological functions of plants under different abiotic stresses. In this study, we investigated the impact of exogenous melatonin to mitigate the negative effects of potassium dichromate (PD) stress in melon plants and analyzed genetic modulation of morphological, physiological,… More >

  • Open Access

    ARTICLE

    Chromium Differentially Affects Hydrogen Peroxide Distribution in Primary and Adventitious Roots of Arabidopsis thaliana L.

    Aarón Giovanni Munguía-Rodríguez1,2, José López-Bucio1, Gerardo Rangel Sánchez1,2, León Francisco Ruiz-Herrera1, Yazmín Carreón-Abud2, Miguel Martínez-Trujillo2,*

    Phyton-International Journal of Experimental Botany, Vol.89, No.1, pp. 35-43, 2020, DOI:10.32604/phyton.2020.07835 - 01 March 2020

    Abstract The post-embryonic growth of the Arabidopsis thaliana root system can be modified by different types of stress, such as sublethal concentrations of metals, which may induce the production of reactive oxygen species (ROS). In this study, the effects of different concentrations of potassium chromate (KCrO4) on the distribution and relative quantity of hydrogen peroxide (H2O2) were determined in primary and adventitious roots in A. thaliana HyPer line seedlings. This line has a biosensor that specifically reports H2O2 levels within tissues as fluorescence. Primary root growth was inhibited at 100 μM Cr (VI); in contrast, adventitious root formation was induced… More >

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