The document summarizes a transcriptomic analysis of photomorphogenesis in Arabidopsis thaliana seedlings. It finds that about 1/4 of the transcriptome is differentially expressed during photomorphogenesis. K-means clustering identified 3 main phases: 1) an early regulatory phase with downregulation of transcription factors and kinases; 2) a growth phase with upregulation of ribosomal activity and cell cycle genes; 3) a later phase with upregulation of photosynthesis and cell wall loosening genes supporting growth through expansion. The analysis provides an overview of gene expression changes during photomorphogenesis in A. thaliana.

21. Ribosome working overtime