From light into shadow: comparative plastomes in <i>Petrocosmea</i> and implications for low light adaptation

Plastids originated from endosymbiosis and be photosynthesis organelle in plant cells, billions of years ago, as the receptor of light energy and the executor of photosynthesis, playing a vital role in plant development and adaptation. However, little is known about the plastid genome to light adaptation. <i>Petrocosmea</i>, a member of the Gesneriaceae family, comprises approximately 70 species with diverse light environment, serve as an ideal subject for studying plastomes adapt to light. Here, we selected ten representative species of <i>Petrocosmea</i> from diverse light environments, assembled their plastid genomes, and conducted a comparative genomic analysis.