ABI3 — Daucus carota subsp. sativus

Summary

DCAR_000539 (DcABI3, also known as DcSIS10) on carrot chromosome 1 encodes a LEC2-like protein with a B3 DNA-binding domain. The protein exhibits phytochrome binding, Hsp90 binding, transcription coactivator activity, and sequence-specific DNA binding, and is associated with positive regulation of seed maturation, cellular response to gibberellin stimulus, far red signaling, negative gravitropism, and plastid organization. It is linked to numerous traits including petal length, gibberellic acid content, seedling vigor, seed set percent, vegetative vigor, photoperiod sensitivity, water stress response, cadmium concentration, aluminum response, phosphorus uptake, and aphid response. The gene is also associated with drought tolerance, ABA biosynthesis and sensitivity, seed development, disease resistance, stomatal closure, and salt stress tolerance. Studies of related genes in other species link the family to seed longevity, oil accumulation, freezing tolerance, and abscisic acid responsiveness.