GSH threshold requirement for NO-mediated expression of the Arabidopsis AtFer1 ferritin gene in response to iron.

Brigitte Touraine (1) , Jean-François Briat (1) , Frédéric Gaymard (1)

1 BPMP - Biochimie et Physiologie Moléculaire des Plantes

Iron treatment of Arabidopsis cultured cells promotes a rapid NO burst within chloroplasts, necessary for up-regulation of the AtFer1 ferritin gene expression. The same occurs in Arabidopsis leaf chloroplasts, and is dependent upon the GSH content of plants. A leaf GSH concentration threshold between 10 and 50 nmol GSHg(-1) FW is required for full induction of AtFer1 gene expression in response to iron.

Mots clés: Oxidative stress; Signaling; Chloroplasts; Thiols

Domaines: Biologie végétale

Brigitte Touraine, Jean-François Briat, Frédéric Gaymard. GSH threshold requirement for NO-mediated expression of the Arabidopsis AtFer1 ferritin gene in response to iron.. FEBS Letters, 2012, 586 (6), pp.880-3. ⟨10.1016/j.febslet.2012.02.016⟩. ⟨hal-00777676⟩