PNH — Capsicum annuum

Summary

CaPNH (T459_17882) on pepper chromosome 6 encodes a protein argonaute 1B, a member of the Argonaute family characterized by Piwi, PAZ, and RNaseH-like domains. The gene is associated with diverse molecular functions including siRNA binding, RNA endonuclease activity, and histone ubiquitin ligase activity. It has been linked to miRNA and long siRNA processing, gene silencing by miRNA-directed mRNA cleavage, somatic stem cell population maintenance, and regulation of body size. Associations with agronomically relevant traits include fruit color, carotenoid content, photosynthetic ability, leaf morphology, virus resistance, seed dormancy, and root phototropism. The gene is also linked to auxin signalling, juvenile-to-adult transition, and TAS3 tasiRNA biogenesis. Studies of related genes in other species connect the family to fruit yield, leaf polarity, shoot meristem organization, and heat tolerance.