Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2586
Title: Peroxidases in roots and primary leaves of Phaseolus vulgaris copper and zinc phytotoxicity: a comparison
Authors: CUYPERS, Ann 
VANGRONSVELD, Jaco 
CLIJSTERS, Herman 
Issue Date: 2002
Publisher: URBAN & FISCHER VERLAG
Source: JOURNAL OF PLANT PHYSIOLOGY, 159(8). p. 869-876
Abstract: The contribution of peroxidases was studied in roots and primary leaves of bean seedlings as a part of the defence mechanism against copper and zinc imposed oxidative stress. Based on the metal content of the different plant organs, copper was mainly stored in the roots, whereas zinc was readily transported to the upper ground parts. In the roots copper had an increasing effect on the capacities of guaiacol and syringaldazine peroxidases. A possible role for lignification in establishing an apoplastic transport barrier in roots is hypothesised. Zinc, on the other hand, had a limited impact on the root metabolism. Future studies should focus on other protection mechanisms in this plant organ. In the primary leaves, both elements had a pronounced (increasing) effect on the peroxidase activities. The data obtained in this study show that peroxidases contribute to the antioxidative defence of the primary leaves of 10 days old bean seedlings after application of both metals and that an interorgan signal transduction pathway is involved. It is pointed out that additional experimental approaches are necessary before the protection mechanism against different metals can be fully compared.
Notes: Limburgs Univ Ctr, Ctr Environm Sci, B-3590 Diepenbeek, Belgium.Cuypers, A, Limburgs Univ Ctr, Ctr Environm Sci, Univ Campus, B-3590 Diepenbeek, Belgium.
Keywords: copper; oxidative stress; peroxidases; Phaseolus vulgaris; zinc
Document URI: http://hdl.handle.net/1942/2586
ISSN: 0176-1617
e-ISSN: 1618-1328
DOI: 10.1078/0176-1617-00676
ISI #: 000177623800008
Category: A1
Type: Journal Contribution
Validations: ecoom 2003
Appears in Collections:Research publications

Show full item record

SCOPUSTM   
Citations

132
checked on Sep 3, 2020

WEB OF SCIENCETM
Citations

123
checked on May 29, 2022

Page view(s)

48
checked on May 28, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.