Titel
Lamina Cell Shape and Cell Wall Thickness Are Useful Indicators for Metal Tolerance—An Example in Bryophytes
Autor*in
Marko S. Sabovljevic
Institute of Botany and Botanical Garden, Faculty of Biology, University of Belgrade
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Abstract
Bryophytes are widely used to monitor air quality. Due to the lack of a cuticle, their cells can be compared to the roots of crop plants. This study aimed to test a hypothetical relation between metal tolerance and cell shape in biomonitoring mosses (Hypnum cupressiforme, Pleurozium schreberi, Pseudoscleropodium purum) and metal sensitive species (Physcomitrium patens, Plagiomnium affine). The tolerance experiments were conducted on leafy gametophytes exposed to solutions of ZnSO4, ZnCl2, and FeSO4 in graded concentrations of 1 M to 10−8 M. Plasmolysis in D-mannitol (0.8 M) was used as a viability measure. The selected species differed significantly in lamina cell shape, cell wall thickness, and metal tolerance. In those tested mosses, the lamina cell shape correlated significantly with the heavy metal tolerance, and we found differences for ZnSO4 and ZnCl2. Biomonitoring species with long and thin cells proved more tolerant than species with isodiametric cells. For the latter, “death zones” at intermediate metal concentrations were found upon exposure to ZnSO4. Species with a greater tolerance towards FeSO4 and ZnSO4 had thicker cell walls than less tolerant species. Hence, cell shape as a protoplast-to-wall ratio, in combination with cell wall thickness, could be a good marker for metal tolerance.
Stichwort
bioindicationbryophytesmosszincironcell shapeparticulate matter
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Plants
Band
10
Ausgabe
2
ISSN
2223-7747
Erscheinungsdatum
2021
Publication
MDPI AG
Projekt
Kod / Identifikator
SRB 15/2018
Fördergeber
Erscheinungsdatum
2021
Zugänglichkeit
Rechte
Rechteangabe
© 2021 by the authors
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