ACD2 — Brassica oleracea

Summary

BoACD2 (BOLC102_C01P002200.1) on cabbage chromosome 1 encodes a protein with RCC reductase, pheophytinase, and chlorophyll b reductase activities, along with calcium ion binding and dynein heavy chain binding functions. It is associated with the chlorophyll cycle, chlorophyll metabolism, carotenoid anabolism, anthocyanin anabolism, leaf formation, fruit development, flower development, chloroplast organization, and regulation of programmed cell death and the hypersensitive response. The gene has been connected to leaf yellowing tolerance, chlorophyll content, anthocyanin content, leaf senescence, stem senescence, yield traits, respiration rate, quantum yield, disease tolerance, root morphology, and cytokinin sensitivity. Phenotypic associations include chlorophyll breakdown and retention, lesion-mimic leaves, premature flower death, seed abortion, stay-green phenotype in darkness, bacterial pathogen resistance, and disease symptom suppression. Studies of related genes in other species link the family to leaf yellowing, cell death, chlorophyll catabolism, and shoot gravitropism.