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Intracellular membranes: kinetics of superoxide production and changes in thylakoids of resurrection plants upon dehydration and rehydration

Published online by Cambridge University Press:  05 December 2011

F. Navari-Izzo ,
C. Pinzino ,
M. F. Quartacci ,
C. L. M. Sgherri  and
R. Izzo
F. Navari-Izzo
Affiliation:
Istituto di Chimica Agraria, Università di Pisa, Via S. Michele degli Scalzi, 2, I-56124 Pisa, Italy
C. Pinzino
Affiliation:
Istituto di Chimica Quantistica ed Energetica Molecolare, C.N.R., Via Risorgimento, 35, I-56126 Pisa, Italy
M. F. Quartacci
Affiliation:
Istituto di Chimica Agraria, Università di Pisa, Via S. Michele degli Scalzi, 2, I-56124 Pisa, Italy
C. L. M. Sgherri
Affiliation:
Istituto di Chimica Agraria, Università di Pisa, Via S. Michele degli Scalzi, 2, I-56124 Pisa, Italy
R. Izzo
Affiliation:
Istituto di Chimica Agraria, Università di Catania, Via Valdisavoia, 5, I-95123 Catania, Italy
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Synopsis

Plants of Boea hygroscopica were grown in a controlled environment. Control leaves were detached from plants grown in well-watered conditions and then subjected for 144 h to rapid or slow dehydration. Dehydrated leaves were then rehydrated for 36 h in distilled water. Rapid-dried leaves were not able to revive, whereas slow-dried leaves recovered their normal metabolic status. Results showed a different superoxide radical production in the dehydrated leaves accompanied by an altered lipid composition. Rehydrated leaves recovered the original lipid composition of control leaves. Spin-labelled thylakoid proteins of dehydrated leaves showed lower -SH group levels and increased spin motion.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 102: Oxygen and Environmental Stress in Plants , 1994 , pp. 187 - 191
Copyright
Copyright © Royal Society of Edinburgh 1994

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