Role of CIA2 and CIL in the Regulation of Chloroplast Development During Photomorphogenesis in Arabidopsis.

ABSTRACT: Chloroplast development plays a crucial role in plant de-etiolation, a process in which plants switch from growth in darkness to light-driven development, known as photomorphogenesis. This study provides evidence that CIA2 (Chloroplast Import Apparatus 2) and CIL (CIA2-Like) contribute to chloroplast biogenesis, likely by affecting and regulating PSII activity and related gene expression. Although their precise molecular roles remain unclear, our findings support their possible involvement in chloroplast development. This is indicated by downregulation of foliar chlorophyll content, chlorophyll a fluorescence parameters, chloroplast size, and gene expression of PSII molecular markers in the cia2cil double mutant during de-etiolation. Chlorophyll a fluorescence and quantitative gene

SUBMITTER: Zarrin Ghalami R 

PROVIDER: S-EPMC12940039 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature