Abstract
92 Light is the key factor in the regulation of plant cell functioning, which affects the processes associated not only with chloroplasts but also with other organelles, including mitochondria. The aim of this work was to compare the level of expression of nuclear and mito� chondrial genes encoding subunits of various com� plexes in the respiratory chain in Arabidopsis leaves in the light and in the dark. The result showed that some of the studied nuclear genes encoding primarily sub� units of respiratory complexes V and I are expressed in the plants at higher levels in the light. The level of tran� scripts of the majority of mitochondrial genes encod� ing the components of the same respiratory complexes is not changed or increased under conditions of dark incubation compared to the plants exposed to light. These data are suggestive of a coordinated regulation of the expression of subunits of certain respiratory chain complexes encoded by the nucleus in the light.
Published Version
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