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Reinstate hydrogen peroxide as the product of alternative oxidase of plant mitochondria

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Title Reinstate hydrogen peroxide as the product of alternative oxidase of plant mitochondria
 
Creator Bhate, Radha
Ramasarma, T
 
Subject Mitochondrial alternative oxidase
Chilling treatment
Potato
SHAM-sensitive activity
Catalase-dependent O2 release
H2O2
 
Description 306-310
Chill treatment of potato tubers for 8 days
induced mitochondrial O2 consumption by cyanide-insensitive
alternative oxidase (AOX). About half of the total O2 consumption in
such mitochondria was found to be sensitive to salicylhydroxamate (SHAM), a
known inhibitor of AOX activity. Addition of catalase to the reaction mixture
of AOX during the reaction decreased the rate of SHAM-sensitive O2
consumption by nearly half, and addition at the end of the reaction released
half of the O2 consumed by AOX, both typical of catalase action on H2O2.
This reaffirmed that the product of reduction of O2 by plant AOX was
H2O2 as found earlier and not H2O as reported
in some recent reviews.
 
Date 2010-11-02T10:27:51Z
2010-11-02T10:27:51Z
2010-10
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://hdl.handle.net/123456789/10525
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJBB Vol.47(5) [October 2010]