The highly conserved homeodomain binds to specific DNA sequences to regulate gene expression.
The Arabidopsis genome contains , categorized into four distinct families based on their structure and function: Key Functions HD-Zip I hormon.zip
Primarily involved in epidermal cell differentiation and lipid metabolism. The highly conserved homeodomain binds to specific DNA
The leucine zipper motif allows these proteins to form homodimers or heterodimers, which is essential for their function. Some HD-Zip genes are regulated by ethylene and
Some HD-Zip genes are regulated by ethylene and methyl-jasmonic acid, signaling responses to biotic threats like insect herbivores. Functional Classification
HD-Zip proteins, particularly from the HD-Zip I family, regulate ABA homeostasis, which is vital for responding to abiotic stresses like drought and salinity.
Regulates responses to abiotic stress (drought, cold) and ABA signaling. Involved in light response and auxin-mediated development. HD-Zip III