**The Evolutionary History of CBF Transcription Factors: Gene Duplication of CCAAT – Binding Factors NF-Y in Plants**

Alexandro Cagliari, Andreia Carina Turchetto-Zolet, Felipe dos Santos Maraschin, Guilherme Loss, Rogério Margis and Marcia Margis-Pinheiro *Universidade Federal do Rio Grande do Sul/UFRGS Brazil* 
