PP — Beta vulgaris subsp. vulgaris

Summary

BvPP (BVRB_5G120830) on sugar beet chromosome 5 encodes a poly(ADP-ribose) polymerase (PARP) family protein with protein ADP-ribosylase, NAD+-protein-aspartate/glutamate ADP-ribosyltransferase, and poly(ADP-ribose) glycohydrolase activities. The gene is associated with DNA ADP-ribosylation, protein poly-ADP-ribosylation, double-strand break repair via NHEJ, chromosome condensation, rRNA processing, cell cycle regulation, and lipid homeostasis. It is linked to responses to oxidative stress, abscisic acid, osmotic conditions, and fungal defense. Associations with agronomic traits include flowering time, flower morphology, root thickness and morphology, stomatal closure time, drought and salt tolerance, disease tolerance, water use efficiency, and plant growth and development. The encoded protein localizes to the nucleus, nucleolus, and mitochondria. Studies of related genes in other species link the PARP family to DNA damage repair, pathogen defense, abiotic stress resistance, and seed storability.