PPH — Beta vulgaris subsp. vulgaris

Summary

BvPPH (PPH, BVRB_2G028780) on sugar beet chromosome 2 encodes a pheophytinase, an alpha/beta hydrolase family protein with pheophytinase activity, RCC reductase activity, Chl b reductase activity, pheophorbide A oxygenase activity, and chlorophyll b synthesis activity, along with Fe/S, chlorophyll, mRNA, and protein binding. The gene is associated with chlorophyll breakdown, PSII-associated light-harvesting complex II catabolic process, regulation of hypersensitive response and programmed cell death, defense response to bacteria and other organisms, response to fructose, secretion, fruit and flower development. It localizes to chloroplast inner membrane, thylakoid, envelope, stroma, apoplast, mitochondria, and cytosol. Associations include leaf yellowing tolerance, hybrid incompatibility, stem senescence, cytokinin sensitivity, chlorophyll content, disease tolerance, root morphology, stay-green phenotype, lesion-mimic leaves, seed abortion, and bacterial pathogen resistance. Related genes in other species link the family to lesion formation, uncontrolled cell death, and pathogen hypersensitivity.