PNH — Nicotiana attenuata

Summary

A4A49_34628 (PNH, also known as AGO1) on chromosome 6 of coyote tobacco encodes an Argonaute family protein with Piwi, PAZ, and RNaseH-like domains, and is annotated with siRNA binding, RNA endonuclease activity, and dsRNA binding. The gene is associated with miRNA and long siRNA processing, gene silencing by miRNA-directed mRNA cleavage, regulation of epidermis development, somatic stem cell population maintenance, and temporal regulation of development. It is linked to competitive growth, leaf polarity and morphology, auxin signalling, virus resistance, and arbuscular mycorrhizal fungal colonization. Associations also include traits such as photosynthetic ability, UV-A and UV-B light sensitivity, gibberellic acid and cytokinin content, leaf shattering, root phototropism, and meristem development. Related genes in other species connect the family to histone ubiquitination, seed dormancy, and flowering time.