PP — Asparagus officinalis

Summary

AoPP (A4U43_C09F340) on asparagus chromosome 9 encodes a poly(ADP-ribose) polymerase (PARP) family protein with NAD+-protein-aspartate and NAD+-protein-glutamate ADP-ribosyltransferase activities, as well as poly(ADP-ribose) glycohydrolase and nucleotidyltransferase activities. The gene is associated with DNA ADP-ribosylation, protein poly-ADP-ribosylation, regulation of DNA repair, double-strand break repair, chromosome condensation, and rRNA processing. 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 encoded protein localises to the nucleus, nucleolus, and mitochondria. Studies of related genes in other species connect the PARP family to DNA damage repair, abiotic stress tolerance, seed storability, and circadian period regulation.