ACD2 — Brassica oleracea var. botrytis

Summary

BoACD2, located on chromosome 1 of cauliflower (Brassica oleracea var. botrytis), encodes a protein with RCC reductase activity, pheophytinase activity, and chlorophyll b reductase activity, among other molecular functions. It is associated with the chlorophyll cycle, macroautophagy, regulation of programmed cell death, and defense responses. The gene is linked to traits including leaf yellowing tolerance, chlorophyll content, leaf senescence, disease tolerance, yield, and root morphology. It has been connected to phenotypes such as chlorophyll breakdown, stay-green in darkness, lesion-mimic leaves, premature flower death, seed abortion, and bacterial pathogen resistance. Localization evidence places the product in the chloroplast thylakoid membrane, chloroplast envelope, and apoplast. Studies of related genes in other species link the family to leaf yellowing, cell death, and chlorophyll catabolism.