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A role for active oxygen species as second messengers in the induction of alternative oxidase gene expression in Petunia hybrida cells
Author(s) -
Wagner Anneke M.
Publication year - 1995
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(95)00688-6
Subject(s) - alternative oxidase , petunia , oxidase test , biochemistry , biology , salicylic acid , second messenger system , mitochondrion , microbiology and biotechnology , chemistry , enzyme , gene
Incubation of Petunia hybrida cells with H 2 O 2 leads to an increase in alternative oxidase activity measured after 24 h. This increased activity is accompanied by an increase in alternative oxidase protein. A model is presented for the regulation of alternative oxidase protein synthesis in which active oxygen species and especially H 2 O 2 play a crucial role as second messengers in the signal transducing pathway from the mitochondria to the nucleus. It is proposed that also the induction of the alternative oxidase by salicylic acid is mediated via H 2 O 2 .