PNH — Lactuca sativa

Summary

LsPNH, located on chromosome 8 of garden lettuce (Lactuca sativa), encodes a protein containing Argonaute, Piwi, PAZ, and RNaseH-like domains. The gene is associated with molecular functions including histone ubiquitin ligase and deubiquitinase activities, dsRNA and siRNA binding, RNA endonuclease activity, and superoxide dismutase activity. It is linked to biological processes such as miRNA metabolic process, gene silencing, somatic stem cell population maintenance, and temporal regulation of development. Associations with traits include leaf morphology and polarity, virus resistance, auxin signalling, photosynthetic ability, root phototropism response, and UV-A and UV-B light sensitivity. The gene is also connected to phenotypes affecting leaf shape, seed dormancy, flowering time, stomatal index, and meristem development. Studies of related genes in other species link the family to shoot meristem organization, leaf polarity, floral development, and heat tolerance.