Structures and methods are provided for expressing a Transgene in Plant Tissue cells and \/ or by the regulatory elements, including Promoters and \/ or 3 - UTR, isolated ubiquitin genes in Brachypodium Distachyon.Se proporcionan construcciones y métodos para expresar un transgén en células y/o tejidos vegetales mediante los elementos reguladores, inclusive los promotores y/o las 3-UTR, aislados de genes de ubiquitina de Brachypodium distachyon.