Format

Send to

Choose Destination
Mol Plant Microbe Interact. 2000 Dec;13(12):1380-4.

Nitric oxide inhibition of tobacco catalase and ascorbate peroxidase.

Author information

1
Waksman Institute, Rutgers--The State University of New Jersey, Piscataway 08854-8020, USA.

Abstract

We used a variety of nitric oxide (NO) donors to demonstrate that NO inhibits the activities of tobacco catalase and ascorbate peroxidase (APX). This inhibition appears to be reversible because removal of the NO donor led to a significant recovery of enzymatic activity. In contrast, APX and catalase were irreversibly inhibited by peroxynitrite. The ability of NO and peroxynitrite to inhibit the two major H2O2-scavenging enzymes in plant cells suggests that NO may participate in redox signaling during the activation of defense responses following pathogen attack.

PMID:
11106031
DOI:
10.1094/MPMI.2000.13.12.1380
[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Atypon
Loading ...
Support Center