Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans

Horling F, Baier M, Dietz K-J (2001)
PLANTA 214(2): 304-313.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
2-Cys peroxiredoxins (2-CPs) are H2O2- and alkyl hydroperoxide-detoxifying enzymes, and occur in animals, fungi, bacteria and higher plants. Here, the cDNA encoding a peroxiredoxin of a multicellular cryptogamic plant was first cloned from the liverwort Riccia fluitans L., and the dependence of its expression on the cellular redox state was analysed. The presence of an N-terminal targeting signal indicates that, like 2-CPs from higher plants, Riccia 2-CP is posttranslationally imported into chloroplasts. Addition of ascorbate and other reductants suppressed 2-CP gene expression and decreased 2-CP protein levels. With ascorbate, the decrease in 2-CP transcript level was fast, concentration dependent, and correlated with the amounts of ascorbate taken up by the tissue. In an approach to identify signaling components, staurosporine was proved to be a highly potent inhibitor of ascorbate-dependent repression of 2-CP-expression. The staurosporine effect indicates that a serine/threonine-kinase is involved in ascorbate-modulated redox regulation of 2-CP expression.
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Zeitschriftentitel
PLANTA
Band
214
Zeitschriftennummer
2
Seite
304-313
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Horling F, Baier M, Dietz K-J. Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans. PLANTA. 2001;214(2):304-313.
Horling, F., Baier, M., & Dietz, K. - J. (2001). Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans. PLANTA, 214(2), 304-313. doi:10.1007/s004250100623
Horling, F., Baier, M., and Dietz, K. - J. (2001). Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans. PLANTA 214, 304-313.
Horling, F., Baier, M., & Dietz, K.-J., 2001. Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans. PLANTA, 214(2), p 304-313.
F. Horling, M. Baier, and K.-J. Dietz, “Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans”, PLANTA, vol. 214, 2001, pp. 304-313.
Horling, F., Baier, M., Dietz, K.-J.: Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans. PLANTA. 214, 304-313 (2001).
Horling, F, Baier, M, and Dietz, Karl-Josef. “Redox-regulation of the expression of the peroxide-detoxifying chloroplast 2-Cys peroxiredoxin in the liverwort Riccia fluitans”. PLANTA 214.2 (2001): 304-313.

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