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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Effect of Tobamovirus Infection on Thermoluminescence Characteristics of Chloroplasts from Infected Plants

  • Jaber Rahoutei , Matilde Barón EMAIL logo , Isabel García-Luque , Magdolna Droppa , Neményi and Gábor Horváth

Changes of thermoluminescence characteristics as well as the O2-evolving capacity was analysed in chloroplasts isolated from Nicotiana benthamiana infected with pepper and paprika mild mottle viruses and their chimeric hybrids. The electron transport activity in thylakoids of virus-infected plants was inhibited and could be restored by adding DPC or Ca2+ which indicated that the virus infection altered the oxygen-evolving complex. In thermoluminescence characteristics of plants infected with either viruses, the first well defined response was a shift in the peak position of the B band from 20 °C to 35 °C corresponding to S3(S2)QB- and S2QB- charge recombinations, respectively, which showed an inhibition in the formation of higher S states in the water splitting system. Simultaneously, a new band appeared around 70 °C due to chemiluminescence of lipid peroxidation. Further progress of the viral infection dramatically decreased the intensity of bands originated from charge recombinations with a concomitant increase of the band at 70 °C indicating the general oxidative breakdown of injured thylakoids

Received: 1998-11-15
Revised: 1999-1-15
Published Online: 2014-6-2
Published in Print: 1999-10-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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