ARF8 — Lactuca sativa

Summary

LsARF8, encoded by gene LSAT_V11C200076320 on lettuce chromosome 2, is a transcription factor with DNA-binding and auxin/IAA-domain features that localises to the nucleus and cytoplasm. It is associated with promoter-specific chromatin binding and transcription cis-regulatory region binding. In lettuce, LsARF8 is linked to numerous developmental and stress-related processes, including petal morphogenesis, filament development, de-etiolation, callus formation, regulation of seed dormancy and germination, geotropism, hyperosmotic salinity response, and downregulation of lateral root development and gibberellic acid signaling. The gene has been connected to traits such as petal length, stem elongation, root hair length, adventitious root number, plant male sterility, photosynthetic rate, and abiotic stress response. Related genes in other species are linked to parthenocarpy, floral organ development, and auxin homeostasis.