PNH — Solanum lycopersicum

Summary

SlPNH (SOLYC06G074730.4) encodes a protein containing Piwi, PAZ, and RNaseH-like domains, with annotated molecular functions including siRNA binding, RNA endonuclease activity, and histone ubiquitin ligase activity. In tomato, the gene is associated with fruit yield and axillary bud formation. It has been linked to leaf polarity, leaf morphology, virus resistance, auxin signalling, TAS3 tasiRNA biogenesis, and the juvenile-to-adult transition. Broader associations include appendage development, somatic stem cell population maintenance, miRNA metabolic processes, and response to potassium and calcium ions. The gene is connected to numerous traits including style length, leaflet shape, lycopene content, lignin biosynthesis, photosynthetic ability, root phototropism, and flower abscission zone morphology. Studies of related genes in other species link the family to shoot meristem organization, organ polarity, floral development, heat tolerance, and antioxidant activity.