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oai:riuma.uma.es:10630/163512026-02-03T12:04:56Zcom_10630_2254col_10630_37959

00925njm 22002777a 4500 dc De-la-Torre-Fazio, Fernando Nicolás author El-Azaz-Ciudad, Jorge author Pascual-Moreno, María Belén author Trontin, Jean-Francois author Debille, Sandrine author Canlet, Francis author Ávila-Sáez, Concepción author Cánovas-Ramos, Francisco Miguel author 2018-07-25 Plants rely on the biosynthesis of L-Phenylalanine as building block for the synthesis of proteins but also as precursor for a tremendous range of plant-derived compounds essential for its grown, development and defense. Polymerization of secondary cell wall in trees involves the massive biosynthesis, among others, of the Phe-derived compound lignin. Thus, these plants require an accurate metabolic coordination between Phe and lignin biosynthesis to ensure its normal development. We have here identified that the pine arogenate dehydratase, whose enzyme activity limits the biosynthesis of Phe in plants, is transcriptionally regulated through direct interaction with PpMyb8. We have also shown that this transcription factor is directly involve in secondary cell wall biogenesis and cell death processes. Together these results indicate that a single transcription factor coordinates lignin accumulation and the proper biosynthesis of its essential precursor L-Phe. https://hdl.handle.net/10630/16351 Fenilalanina - Síntesis Maritime pine PpMYB8 directly co-regulates secondary cell wall architecture and the associated Phe-biosynthesis pathway