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New members of the tomato ERF family show specific expression pattern and diverse DNA-binding capacity to the GCC box element

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Tournier, Barthélémy | Sanchez-Ballesta, Maria Teresa | Jones, Brian | Pesquet, Edouard | Regad, Farid | Latché, Alain | Pech, Jean-Claude | Bouzayen, Mondher

Edité par CCSD ; Wiley -

International audience. Four new members of the ERF (ethylene-response factor) family of plant-speci¢c DNA-binding (GCC box) factors were isolated from tomato fruit (LeERF1^4). Phylogenetic analysis indicated that LeERF2 belongs to a new ERF class, characterized by a conserved N-terminal signature sequence. Expression patterns and cis/trans binding a⁄nities di¡ered between the LeERFs. Combining experimental data and modeled three-dimensional analysis, it was shown that binding a⁄nity of the LeERFs was a¡ected by both the variation of nucleotides surrounding the DNA cis-element sequence and the nature of critical amino acid residues within the ERF domain.

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