Activation volume and activation energy of the protochlorophyllide phototransformation and the Shibata shift determined with high pressure fluorescence spectroscopy

Solymosi, Katalin: Activation volume and activation energy of the protochlorophyllide phototransformation and the Shibata shift determined with high pressure fluorescence spectroscopy. Acta biologica Szegediensis, (46) 3-4. pp. 151-153. (2002)

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Abstract

The kinetics of protochlorophyllide phototransformation and of the subsequent blue shift were studied in homogenates prepared from etiolated wheat leaves using fluorescence spectroscopy at high pressures. The pressure dependence of the processes was studied between 0.1 and 400 MPa. The activation volumes were calculated from the pressure dependence of the kinetical curves of the processes and were compared at 20°C and at 40°C. The temperature dependence of the processes was analyzed at atmospheric pressure (0.1 MPa) between 10°C and 40°C. Th eactivation energy of the processe sat atmospheric pressure was calculated using Arrhenius plot. The simultaneous variation/change of temperature and pressure provides information about the molecular events occuring during the activation of the processes.

Item Type: Article
Event Title: Hungarian Congress on Plant Physiology, 7., 2002, Szeged
Journal or Publication Title: Acta biologica Szegediensis
Date: 2002
Volume: 46
Number: 3-4
Page Range: pp. 151-153
ISSN: 1588-385X
Language: angol
Heading title: Photosynthesis, the effects of UV-B irradiation; Proceedings of the 7th Hungarian Congress on Plant Physiology
Uncontrolled Keywords: Természettudomány, Biológia
Additional Information: Bibliogr.: 153. p.; Abstract
Date Deposited: 2016. Oct. 17. 09:25
Last Modified: 2018. May. 28. 11:29
URI: http://acta.bibl.u-szeged.hu/id/eprint/22540

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