Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya

Kumar V, Dietz K-J, Sharma SS (2020)
Journal of Plant Growth Regulation.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
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Abstract / Bemerkung
A comparative evaluation of arsenic (As)-induced toxicity has been made in selected Western Himalayan ferns belonging to the family Pteridaceae (Pteris vittataL. andP. creticaL.) and Polypodiaceae (Polypodiodes microrhizoma(C. B. Clarke ex Baker) Ching andLepisorus contortus(H. Chirst) Ching) employing a rapid leaf (pinna) slice test. The exposure of pinna segments to As(V) (Na2HAsO4; 0-1000 mu M), led to a concentration-dependent increase in K(+)leakage into the incubation medium owing to membrane damage. Strong species-specific differences were evident. Thus, the magnitude of K(+)leakage enhancement was much lower in Pteridaceae members (lowest inP. vittata) than in those of Polypodiaceae. The As effects were like those of Cu, a redox active element like As, and H(2)O(2)suggesting them to be mediated by oxidative stress. Involvement of K(+)channels in As-induced K(+)leakage is unlikely, as no effect of tetraethylammonium chloride (TEA), a K(+)channel inhibitor was evident. Furthermore, the activities of antioxidant enzymes, superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) were markedly altered due to As treatment in a species-specific manner pointing to a role of antioxidant defence in differential response and thereby tolerance of the concerned ferns to As. Findings have implications for phytoremediation.
Stichworte
Arsenic; Ferns; Pteridaceae; Polypodiaceae; K(+)leakage; Antioxidative; defence
Erscheinungsjahr
2020
Zeitschriftentitel
Journal of Plant Growth Regulation
ISSN
0721-7595
eISSN
1435-8107
Page URI
https://pub.uni-bielefeld.de/record/2945621

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Kumar V, Dietz K-J, Sharma SS. Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya. Journal of Plant Growth Regulation. 2020.
Kumar, V., Dietz, K. - J., & Sharma, S. S. (2020). Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya. Journal of Plant Growth Regulation. doi:10.1007/s00344-020-10145-w
Kumar, V., Dietz, K. - J., and Sharma, S. S. (2020). Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya. Journal of Plant Growth Regulation.
Kumar, V., Dietz, K.-J., & Sharma, S.S., 2020. Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya. Journal of Plant Growth Regulation.
V. Kumar, K.-J. Dietz, and S.S. Sharma, “Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya”, Journal of Plant Growth Regulation, 2020.
Kumar, V., Dietz, K.-J., Sharma, S.S.: Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya. Journal of Plant Growth Regulation. (2020).
Kumar, Vijay, Dietz, Karl-Josef, and Sharma, Shanti S. “Differential Arsenic-Induced Membrane Damage and Antioxidant Defence in Isolated Pinna Segments of Selected Fern Species from Western Himalaya”. Journal of Plant Growth Regulation (2020).