CAF — Daucus carota subsp. sativus

Summary

DCAR_004371 (DcCAF, also known as DcDCL3B, DcEMB60, DcASU1) on carrot chromosome 1 encodes a multidomain protein with helicase, RNase III, PAZ, and dsRNA-binding domains, annotated with ribonuclease III, helicase, DNA glycosylase, AP lyase, RNA methyltransferase, and DNA demethylase activities. It is associated with small RNA processing pathways including pre-miRNA, lsiRNA, and ta-siRNA processing, gene silencing by miRNA-directed mRNA cleavage, and regulation of adaxial/abaxial pattern formation, seed maturation, meristem development, and embryonic pattern specification. In carrot, the gene is linked to soluble sugar content. Broader associations connect it to leaf, floral, and root morphology traits, vegetative vigor, viral disease response, herbicide sensitivity, osmotic stress response, seed dormancy, and sucrose content. Studies of related genes in other species link the family to antiviral defense, systemic RNA interference, herbivore resistance, and resistance to fungal pathogens such as Sclerotinia sclerotiorum and Fusarium brachygibbosum.