Ethylene signaling promotes seed-derived somatic embryogenesis by directly activating LEAFY COTYLEDON 1 in Arabidopsis thaliana - PubMed
4 hours ago
- #ethylene signaling
- #somatic embryogenesis
- #Arabidopsis thaliana
- Ethylene signaling enhances somatic embryogenesis (SE) in Arabidopsis thaliana by activating LEAFY COTYLEDON 1 (LEC1).
- Auxin, particularly 2,4-D, is a key initiator of SE, and ethylene signaling is essential for auxin-mediated SE.
- Ethylene precursors (ACC, ETH) promote SE, while ethylene perception inhibitors (1-MCP) suppress it.
- Auxin rapidly activates ethylene biosynthesis genes (ACS, ACO2), enhancing ethylene responses during early SE.
- Ethylene transcription factors (EIN3, EIL1) directly bind to promoters of embryonic identity genes (LEC1, LEC2), regulating their expression.