PPR — Nicotiana attenuata

Summary

A4A49_02550, designated NaPPR, encodes a pentatricopeptide repeat (PPR)-containing protein with an SMR domain. The product is annotated for mRNA binding and is associated with RNA processing, chloroplast RNA processing, mRNA stabilization, anther development, and virus-induced post-transcriptional gene silencing. It localizes to the chloroplast. This gene has been connected to cytoplasmic male sterility. Studies of related genes in other species link the PPR family to traits including pollen fertility, drought tolerance, leaf color, chlorophyll content, lycopene content, and pungency, though these associations are not yet established in coyote tobacco.