Appearance of alternative respiration in cucumber cotyledon mitochondria after treatment with cycloheximide

1991 ◽  
Vol 83 (4) ◽  
pp. 640-646 ◽  
Author(s):  
Yukio Morohashi ◽  
Tadahito Seto ◽  
Hisashi Matsushima
1990 ◽  
Vol 57 (3) ◽  
pp. 131-137
Author(s):  
E. Dubreucq ◽  
H�l�ne Boze ◽  
G. Moulin ◽  
P. Galzy

1980 ◽  
Vol 8 (2) ◽  
pp. 71-74 ◽  
Author(s):  
O. Zehentgruber ◽  
C.P. Kubicek ◽  
M. Röhr

1988 ◽  
Vol 43 (5-6) ◽  
pp. 438-442 ◽  
Author(s):  
Matilde Barón Ayala ◽  
Gerhard Sandmann

In Scenedesmus about half of NADH oxidation proceeds via a cyanide-sensitive and the other half via a cyanide-insensitive respiratory pathway. In contrast, respiration is completely cyanide sensitive in pea indicating that the alternative respiratory pathway is absent. Cu deficiency in pea plants and in heterotrophically grown Scenedesmus cells interferes with respiratory activity of mitochondria. In both organisms, the cyanide-sensitive NADH oxidation was strongly decreased during cultivation in low Cu media. Cu sensitivity was also observed for the alternative respiratory pathway in Scenedesmus. These results suggest that a Cu-containing component is involved in the alternative respiratory pathway. This is the main reason why alternative respiration cannot be regarded as a compensation for low cytochrome-oxidase activities during Cu starvation. The Cu dependency of the cyanide-sensitive respiration was located at the site of cytochrome oxidase. A strong coordination of the biosynthesis of the Cu-containing cytochrome-oxidase complex was evident. When the endogenous Cu pool was low, formation of cytochrome aa3, another component of cytochrome oxidase, was also decreased.


2007 ◽  
Vol 164 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Narinder Kumar ◽  
Dhiraj Vyas ◽  
Sanjay Kumar

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