Journalartikel

Jahr der Veröffentlichung: 2005

Seiten: 279-293

Zeitschrift: Phyton: Annales rei Botanicae

Bandnummer: 45

Heftnummer: 3

ISSN: 0079-2047

URL: https://www.zobodat.at/pdf/PHY_45_3_0279-0293.pdf

Verlag: Institut für Biologie, Universität Graz, Austria) und Verlag Ferdinand Berger

Abstract: 
The bean cultivars 'Tenderette' and 'Oregon' were treated in open top chambers with 30 or 50 ppb ozone which was added to ambient air during daylight. The development of apoplastic radicals and of the antioxidative capacity was determined in the leaves with the main interest in the development of the redox status of ascorbate and glutathione in the apoplast fluid and in the total leaf extract. We show that despite large individual changes in concentration the redox ratios of ascorbate, dehydroascrobate, gluthatione and oxidised glutathtione were more or less constant. Over the course of the study the ratios experienced only moderate shifts and stayed at the reduced states. The cultivars 'Tenderette' and 'Oregon' are considered to show a difference in ozone sensitivity. Both cultivars show typical symptoms of ozone damage that occur in the more ozone tolerant cultivar 'Tenderette' at a time shift of 10 days. A relationship between the differences in tolerance towards ozone and the development of the redox status of the antioxidatives could not be established.

Harvard-Zitierstil: Bräuning, H., Pahlich, E., Müller, C. and Jäger, H. (2005) Changes of the redox status of glutathione and ascorbate in leaves and apoplast of Phaseolus vulgaris cultivars under ozone stress, Phyton: Annales rei Botanicae , 45(3), pp. 279-293. https://www.zobodat.at/pdf/PHY_45_3_0279-0293.pdf

APA-Zitierstil: Bräuning, H., Pahlich, E., Müller, C., & Jäger, H. (2005). Changes of the redox status of glutathione and ascorbate in leaves and apoplast of Phaseolus vulgaris cultivars under ozone stress. Phyton: Annales rei Botanicae . 45(3), 279-293. https://www.zobodat.at/pdf/PHY_45_3_0279-0293.pdf