Received: 13 Oct 2021 Revised: 12 Dec 2021 Published online: 20 Jan 2022
Chloroplasts perform photosynthesis and thus drive the growth, development, and reproduction of plants. Mutations in genes that encode chloroplast proteins frequently lead to chlorophyll deficiencies. Studies on chlorophyll-deficient mutants have led to major advances in our knowledge of chloroplast- and photosynthesis-associated genes in model plants. Similarly, studies on chlorophyll-deficient mutants will contribute to our understanding of chloroplast development and function in solanaceous crops, such as pepper, thus helping us to rationally manipulate photosynthesis for crop improvement. Pepper is a globally important vegetable that is used as a spice, food, and medicine.