Genetic Monitoring of Airborne Particles

Villalobos‐Pietrini, Rafael; Gómez‐Arroyo, Sandra; Amador-Muñóz, Omar

doi:10.1007/978-1-4615-1305-6_24

Cited by 3 publications

(1 citation statement)

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“…In different cities, the risk posed by environmental pollution to living beings as well as to ecosystems has been demonstrated (Ceretti et al, 2015;Bazyar et al, 2019;Miller, 2020). However, studies to assess this danger in the MAMV are scarce (Villalobos-Pietrini et al, 2000;Gómez-Arroyo et al, 2018a, b;2021). Among the various contaminants, heavy metals are an important group that threatens the quality of life since they have been linked to health problems (Al Osman et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

The wild plant Gnaphalium lavandulifolium as a sentinel for biomonitoring the effects of environmental heavy metals in the metropolitan area of México Valley

Cortés-Eslava

Gómez‐Arroyo

Cortés

et al. 2022

Environ Monit Assess

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Biomonitoring is a valuable tool for assessing the presence and effects of air pollutants such as heavy metals (HM); due to their toxicity and stability, these compounds can affect human health and the balance of ecosystems. To assess its potential as a sentinel organism of HM pollution, the wild plant Gnaphalium lavandulifolium was exposed to four sites in the metropolitan area of México Valley (MAMV): Altzomoni (ALT) Coyoacán (COY), Ecatepec (ECA), and Tlalnepantla (TLA) during two, four and eight weeks, between October-November 2019. Control plants remained under controlled conditions. The chemical analysis determined twelve HM (Al, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, and Zn) in the leaves. Macroscopic damage to the leaves, later determined in semi-thin sections under light microscopy, lead to a finer analysis. Transmission electron microscope (TEM) showed noticeable ultrastructural changes. Chromatin condensation, protoplast shrinkage, cytoplasm vacuolization, cell wall thinning, decreased number and size of starch grains and plastoglobules in chloroplasts. All these characteristics of stress-induced Programed Cell Death (sPCD) were related to the significant increase of toxic HM in the leaves of the exposed Manuscript Click here to access/download;Manuscript;MANUSCRIPT.docx Click here to view linked References plants compared to the control (p < 0.05). Immunohistochemistry revealed a significant amount of proteases with caspase 3-like activity in ECA and TLA samples during long exposure times. Ultrastructural changes and sPCD features detected, confirmed the usefulness of G. lavandulifolium as a good biomonitor of HM contamination. They supported the possibility of considering subcellular changes as markers of abiotic stress conditions in plants.

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