PP — Asparagus officinalis

Summary

A4U43_C10F14860, designated AoPP in asparagus (Asparagus officinalis) on chromosome 10, encodes a poly(ADP-ribose) polymerase (PARP) family protein with NAD+-protein-aspartate ADP-ribosyltransferase, NAD+-protein-glutamate ADP-ribosyltransferase, poly(ADP-ribose) glycohydrolase, and nucleotidyltransferase activities. The gene is associated with DNA ADP-ribosylation, regulation of DNA repair, non-homologous end joining, double-strand break repair, chromosome condensation, and protein poly-ADP-ribosylation. It is linked to responses to oxidative stress, heat, abscisic acid, osmotic stress, and fungal defence, as well as to flowering time, flower morphology, root thickness, stomatal closure, jasmonic acid content, and disease tolerance. The product localises to the nucleus, nucleolus, and mitochondria. Studies of related genes in other species link the PARP family to DNA damage response, abiotic stress resistance, seed storability, and basal defence.