Past studies investigating the regulatory functions of nitric oxide (NO) in plant cells have utilized various NO-donors that release NO in different redox forms, which has lead to problems in the interpretation of data. In the present study, the effects of different NO-donors releasing NO with either NO+ (SNP) or NO. (SNAP, GSNO, NOC-18) character have been compared in plant cells. In particular, ferritin regulation, programmed cell death, cellular redox state, and ROS-scavenging enzymes in Arabidopsis tholiona and Nicotiana tobacum cells were examined. The results show that SNP behaves differently than the other NO-donors tested; indeed, SNP induces accumulation of ferritin transcripts in Arabidopsis, whereas SNAP inhibits its accumulation. Moreover, among the assortment of donors tested, only SNP caused programmed cell death and suppression of ROS-scavenging systems.
Comparative effects of various nitric oxide donors on ferritin regulation, programmed cell death, and cell redox state in plant cells / I. Murgia, M.C. de Pinto, M. Delledonne, C. Soave, L. De Gara. - In: JOURNAL OF PLANT PHYSIOLOGY. - ISSN 0176-1617. - 161:7(2004), pp. 777-783.
Comparative effects of various nitric oxide donors on ferritin regulation, programmed cell death, and cell redox state in plant cells
I. MurgiaPrimo
;C. SoavePenultimo
;
2004
Abstract
Past studies investigating the regulatory functions of nitric oxide (NO) in plant cells have utilized various NO-donors that release NO in different redox forms, which has lead to problems in the interpretation of data. In the present study, the effects of different NO-donors releasing NO with either NO+ (SNP) or NO. (SNAP, GSNO, NOC-18) character have been compared in plant cells. In particular, ferritin regulation, programmed cell death, cellular redox state, and ROS-scavenging enzymes in Arabidopsis tholiona and Nicotiana tobacum cells were examined. The results show that SNP behaves differently than the other NO-donors tested; indeed, SNP induces accumulation of ferritin transcripts in Arabidopsis, whereas SNAP inhibits its accumulation. Moreover, among the assortment of donors tested, only SNP caused programmed cell death and suppression of ROS-scavenging systems.Pubblicazioni consigliate
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