PNH — Daucus carota subsp. sativus

Summary

DCAR_014004 (DcPNH) on carrot chromosome 4 encodes a protein with Argonaute domains including PAZ, Piwi and Gly-rich regions, and has been annotated with multiple molecular functions such as dsRNA binding, siRNA binding, RNA endonuclease activity, and histone ubiquitin ligase and deubiquitinase activities. The gene is associated with miRNA and siRNA processing, gene silencing by miRNA-directed mRNA cleavage, phloem development, somatic stem cell population maintenance, and temporal regulation of development. It is linked to traits including leaf and flower morphology, root phototropism, photosynthetic ability, lignin biosynthesis, gibberellic acid and cytokinin content, and responses to UV-A and UV-B light. Associations with leaf polarity, virus resistance, auxin signalling, arbuscular mycorrhizal colonization, seed dormancy, and flowering time have also been noted. Related genes in other species are linked to histone ubiquitination, leaf colour, seed longevity and stress responses.