PJB-2025-32
An effective method for identifying plant oxidative stress rapidly and management way of vegetation along riparian areas
Mizanur Rahman
Abstract
Native and invasive plants of the riverain region undergo a range of environmental stresses that result in excess reactive oxygen species (ROS). Hydrogen peroxide (H2O2) is a relatively stable and quickly quantifiable way among different ROS. The herbaceous species including Artemisia princeps, Sicyos angulatus, and Solidago altissima were selected. The H2O2 and photosynthetic pigment of leaves were measured, soil samples were analyzed to quantify macronutrients such as total nitrogen (TN), total phosphorus (TP), and soil moisture, and photosynthetically active radiation (PAR) were also recorded at different observed sites of Arakawa Tarouemon, Japan. The H2O2 concentration of S. altissima significantly increased with high soil moisture content (r=0.650; p<0.01), whereas A. Princeps (r=-0.638; p<0.01) and S. angulatus (r=-0.777; p<0.001) exhibits vice versa relationship. A positive correlation was observed with PAR and H2O2 in A. princeps and S. angulatus meanwhile, a negative trend was observed in the S. altissima. Both chl a and chl b decreased with increasing H2O2 for each species. However, positive correlation is identified between H2O2 and chl a:b in each species. When comparing different parameters involving TN, TP, TN: TP, PAR, and soil moisture content with H2O2 utilizing the general additive model (GAM), only soil moisture content is significantly correlated with H2O2. Hence, this study suggests that H2O2 would be an effective biomarker for quantifying environmental stress within a short time which can be applied for riparian native and invasive plant species vegetation regulation.
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