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The Coexistence of the Oxidative and Reductive Systems in Roots: The Role of Plasma Membranes
Author(s) -
VULETIĆ M.RJANA,
ŠUKALOVIĆ VESNA HADŽITAŠKOVIĆ,
VUČINIĆ ŽELJKO
Publication year - 2005
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1196/annals.1342.022
Subject(s) - chemistry , redox , membrane , peroxidase , oxidizing agent , extracellular , biochemistry , reactive oxygen species , superoxide dismutase , oxidative phosphorylation , biophysics , oxidative stress , inorganic chemistry , enzyme , organic chemistry , biology
A bstract : Different components of the plasma membrane bound and associated redox system, which participate in the energy transfer from the predominantly reducing intercellular environment to the extracellular oxidizing environment, are reviewed. Special attention is given to plant root cells. An analysis of the plasma membrane‐associated redox components, such as the cytochromes, quinones, and different types of oxidoreductases (dehydrogenases, oxidases, peroxidases, and superoxide dismutases), is made, as well as their coupling with naturally occurring extracellular substrates, such as oxygen and its reactive forms, phenols, ascorbate, nitrate, ferric ion, and organic acids. The participation of different free radical species in most of the plasma membrane‐bound redox reactions is documented.