ZF1 — Cucumis sativus

Summary

CsZF1 (CSA_4G642460) on cucumber chromosome 4 encodes a zinc-finger protein 1 of the AZF1/2/3-like family with C2H2-type domains. The product exhibits DNA-binding transcription factor activity, histone H3K4 methylase activity, and binds transcription corepressors, phosphatases, and RNA polymerase II cis-regulatory regions. CsZF1 is associated with sex differentiation and determination, stamen development, regulation of root development and meristem size, unidimensional cell growth, stomatal complex patterning, and responses to freezing, L-glutamate, and oxidative stress. It is linked to fruit quality, fruit length, seed coat morphology, anther morphology, lateral root number and length, adventitious root number, phosphorus uptake, jasmonic acid sensitivity and content, anthocyanin content, and UV-B light sensitivity. The protein localizes to the nucleus, cytoplasm, cytosol, preprophase band, and cell cortex. Studies of related genes in other species connect the family to freezing stress resistance, anthocyanin and flavonoid biosynthesis, root architecture, and defense responses.