Copper amine oxidases (CuAO) and flavin-containing amine oxidases (PAO) are hydrogen peroxide (H2O2)-producing enzymes responsible for the oxidative de-amination of polyamines. Currently, a key role has been ascribed to apoplastic amine oxidases in plants, i.e., to behave as H2O2-delivering systems in the cell wall during cell growth and differentiation as well as in the context of hostpathogen interactions. Indeed, H2O2 is the co-substrate for the peroxidase-driven reactions during cell-wall maturation and a key signalling molecule in defence mechanisms. We recently demonstrated the involvement of an apoplastic PAO in the wound-healing process of the Zea mays mesocotyl. Experimental evidence indicated a similar role for an apoplastic PAO in Nicotiana tabacum. In this addendum we suggest that a CuAO activity is also involved in this healing event.

Tisi, A., Angelini, R., Cona, A. (2008). Wound healing in plants: Cooperation of copper amine oxidase and flavin-containing poliamine oxidase. PLANT SIGNALING & BEHAVIOR, 3, 204-206 [10.4161/psb.3.3.5372].

Wound healing in plants: Cooperation of copper amine oxidase and flavin-containing poliamine oxidase

Tisi A;Angelini R;CONA, Alessandra
2008

Abstract

Copper amine oxidases (CuAO) and flavin-containing amine oxidases (PAO) are hydrogen peroxide (H2O2)-producing enzymes responsible for the oxidative de-amination of polyamines. Currently, a key role has been ascribed to apoplastic amine oxidases in plants, i.e., to behave as H2O2-delivering systems in the cell wall during cell growth and differentiation as well as in the context of hostpathogen interactions. Indeed, H2O2 is the co-substrate for the peroxidase-driven reactions during cell-wall maturation and a key signalling molecule in defence mechanisms. We recently demonstrated the involvement of an apoplastic PAO in the wound-healing process of the Zea mays mesocotyl. Experimental evidence indicated a similar role for an apoplastic PAO in Nicotiana tabacum. In this addendum we suggest that a CuAO activity is also involved in this healing event.
Tisi, A., Angelini, R., Cona, A. (2008). Wound healing in plants: Cooperation of copper amine oxidase and flavin-containing poliamine oxidase. PLANT SIGNALING & BEHAVIOR, 3, 204-206 [10.4161/psb.3.3.5372].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/123045
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