Plastoquinone: possible involvement in plant disease resistance.

Urszula Maciejewska; Lidia Polkowska-Kowalczyk; Ewa Swiezewska; Anna Szkopinska

doi:10.18388/abp.2002_3785

Plastoquinone: possible involvement in plant disease resistance.

Urszula Maciejewska Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warszawa, Poland.;
Lidia Polkowska-Kowalczyk
Ewa Swiezewska
Anna Szkopinska

DOI: https://doi.org/10.18388/abp.2002_3785

Abstract

The plant Solanum nigrum treated with the pathogen Phytophthora infestans-derived elicitor responded by elevated reactive oxygen species (ROS) production, lipid peroxidation and lipoxygenase (EC 1.13.11.12) activity in comparison with control plants indicating that oxidative stress took place. We demonstrate that these events are accompanied by a significant increase in plastoquinone (PQ) level. It is postulated that PQ may be associated with mechanisms maintaining a tightly controlled balance between the accumulation of ROS and antioxidant activity that determines the full expression of effective defence.

Published

2002-09-30

Issue

Vol. 49 No. 3 (2002)

Section

Articles

Acta Biochimica Polonica is an OpenAccess quarterly and publishes four issues a year. All contents are distributed under the Creative Commons Attribution-ShareAlike 4.0 International (CC BY 4.0) license. Everybody may use the content following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.