Divergent N Deficiency-Dependent Senescence and Transcriptome Response in Developmentally Old and Young Brassica napus Leaves.

ABSTRACT: In the spring oilseed rape (OSR) cultivar 'Mozart' grown under optimal N supply (N_O) or mild N deficiency (N_L) the transcriptome changes associated with progressing age until early senescence in developmentally old lower canopy leaves (leaf #4) and younger higher canopy leaves (leaf #8) were investigated. Twelve weeks old N_O and N_L plants appeared phenotypically and transcriptomically identical, but thereafter distinct nutrition-dependent differences in gene expression patterns in lower and upper canopy leaves emerged. In N_O leaves #4 of 14-week-old compared to 13-week-old plants, ∼600 genes were up- or downregulated, whereas in N_L leaves #4 ∼3000 genes were up- or downregulated. In contrast, in 15-week-old compared to 13-we

SUBMITTER: Safavi-Rizi V 

PROVIDER: S-EPMC5799827 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature