Transcriptome analysis of the shoots of Arabidopsis wild-type and mutants deficient in either or both activities of nitrate reductase and alternative oxidase

ABSTRACT: The conversion of nitrate to ammonium, known as nitrate reduction, consumes large amounts of reductants in plants. Previous studies have observed that mitochondrial alternative oxidase (AOX) is upregulated under conditions of limited nitrate reduction, such as low or no nitrate availability, or when ammonium serves as the sole nitrogen (N) source. Electron transfer from ubiquinone to AOX bypasses the proton-pumping complexes III and IV, thereby consuming reductants efficiently. Therefore, the upregulation of AOX under conditions of limited nitrate reduction may help dissipate excessive reductants and mitigate oxidative stress. However, firm evidence supporting this hypothesis is lacking due to the absence of experimental systems capable of directly analyzing the relationship between nitrat

INSTRUMENT(S): NextSeq 500

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Takushi HACHIYA 

PROVIDER: E-MTAB-14027 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress