Limited accumulation of copper in heavy metal adapted mosses

Plant Physiology and Biochemistry : PPB
Sebastian AntreichIngeborg Lang

Abstract

Copper is an essential micronutrient but has toxic effects at high concentrations. Bryophytes are remarkably tolerant to elevated levels of copper but we wondered if this tolerance might be species dependent. Therefore, in three moss species, Physcomitrella patens, Mielichhoferia elongata and Pohlia drummondii, the accumulation of copper was compared with semiquantitative SEM-EDX analyses after six weeks of cultivation on copper containing media. We investigated the role of the copper-linked anion and applied copper as CuCl2, CuSO4 and CuEDTA, respectively. Line scans along the growth axis of moss gametophores allowed for a detailed analysis of copper detection from the base towards the tip. Mosses originating from metal-containing habitats (i.e. M. elongata and P. drummondii) revealed a lower accumulation of copper when compared to the non-adapted P. patens. CuEDTA had a shielding effect in all three species and copper levels differed greatly from CuCl2 or CuSO4. The detection of reactive oxygen species (ROS), H2O2 and O2(-), was further used to indicate stress levels in the gametophore stems. ROS staining was increased along the whole stem and the tip in the non-adapted species P. patens whereas the tolerant species M. elonga...Continue Reading

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Citations

Dec 16, 2017·Bulletin of Environmental Contamination and Toxicology·Ángela AresHitoshi Sakakibara
Aug 30, 2019·Environmental Science and Pollution Research International·Biswajita MahapatraAbanti Pradhan
Nov 7, 2020·Environmental Science and Pollution Research International·Sandra Gómez-ArroyoOfelia Morton-Bermea
May 1, 2021·Bulletin of Environmental Contamination and Toxicology·Narin Printarakul, Weeradej Meeinkuirt

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