期刊
JOURNAL OF PLANT PHYSIOLOGY
卷 161, 期 7, 页码 777-783出版社
URBAN & FISCHER VERLAG
DOI: 10.1016/j.jplph.2003.12.004
关键词
Arabidopsis thaliana; ascorbate peroxidase; catalase; programmed cell death; ferritin; Nicotiana tabacum; nitric oxide; NO-donor; reactive oxygen species
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. (C) 2004 Elsevier GmbH. All rights reserved.
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