Probable RNA-binding protein that plays an essential role in chloroplast development. Regulates the ribosomal proteins homeostasis and ribosomal RNA development in chloroplasts. Involved the regulation of 16S rRNA and required for the expression of chloroplast-associated photosynthetic genes. Expressed in roots, leaf sheaths, veins of leaf blade, mature leaves, endodermis of culm, panicles and anthers. Leaf albino phenotype, reduced root length, and partial seedling lethality.