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Succinate dehydrogenase in Arabidopsis thaliana is regulated by light via phytochrome A
Author(s) -
Popov Vasily N.,
Eprintsev Alexander T.,
Fedorin Dmitry N.,
Igamberdiev Abir U.
Publication year - 2010
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2009.11.057
Subject(s) - phytochrome , arabidopsis thaliana , mutant , darkness , succinate dehydrogenase , phytochrome a , far red , biology , gene expression , dehydrogenase , arabidopsis , biochemistry , white light , red light , gene , microbiology and biotechnology , mitochondrion , enzyme , botany , physics , optics
The effect of light on succinate dehydrogenase (SDH) activity and mRNA content was studied in Arabidopsis thaliana plants. The transition from darkness to light caused a short transient increase in the SDH activity followed by a decrease to a half of the original activity. The white or red light were found to be down‐regulating factors for the mRNA content of the sdh1‐2 and sdh2‐3 genes and SDH catalytic activity both in A. thaliana wild‐type plants and in the mutant deficient in the phytochrome B gene, but not in the mutant deficient in the phytochrome A gene, while the far‐red light of 730 nm reversed the red light effect. It is concluded that phytochrome A participates in the regulation of mitochondrial respiration through effect on SDH expression.