Characterization of PM₁₀-bound metal speciation, bioavailability, and plant responses in Andrographis paniculata at a traffic junction.

ABSTRACT: Understanding the intricate fate of atmospheric particulate matter (PM₁₀)-associated heavy metals within medicinal plants is crucial for environmental and public health. This study rigorously investigated the speciation, bioavailability, and cellular-physiological impacts of PM₁₀-borne lead (Pb), cadmium (Cd), and arsenic (As) on Andrographis paniculata, tracing their dynamics across soil and plant tissues. The experiment was conducted near a busy traffic junction, comparing uncontaminated (T1) and metal-contaminated (T2) soils. PM₁₀-Pb was predominantly (76%) in the residual fraction, whereas Cd was largely (66.5%) in the oxidizable fraction. As concentrations were too low for detailed PM₁₀ fractionation. In A. paniculata, Pb exhibited higher ac

SUBMITTER: Yadav S 

PROVIDER: S-EPMC12630610 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature