RT Conference Proceedings
T1 PpNAC1, a main regulator of phenylalanine biosynthesis in p. Pinaster
A1 Pascual-Moreno, María Belén
A1 Llebrés, María Teresa
A1 Cañas-Pendón, Rafael Antonio
A1 Cánovas-Ramos, Francisco Miguel
A1 Ávila-Sáez, Concepción
K1 Biosíntesis
K1 Fotosíntesis
AB The metabolism of phenylalanine plays a central role in the channeling of carbon from photosynthesis to thebiosynthesis of phenylpropanoids duringwood formation. This crucial pathway is finely regulated primarily at thetranscriptional level by MYB and NAC transcription factors. In Arabidopsis, poplar and eucalyptus, the transcriptionalnetwork controlling secondary cell wall involves NAC-domain regulators operating upstream Myb transcriptionfactors, but in conifers functional evidence had only been obtained for MYBs. We showed that PpMYB8 is a regulatorof phenylpropanoid metabolism and lignin synthesis genes (Craven-Bartle et al. 2013) and three NAC genes PpNAC1,PpNAC30 and PpNAC31 were associated to vascular development in maritime pine (Pascual et al. 2015). Of all ofthem, PpNAC1 is expressed in the secondary xylem and compression wood of adult trees and phylogenetic analysisclassified PpNAC1 as potential candidates to be involved in a transcriptional regulatory network controllingphenylalanine metabolism in maritime pine. This NAC transcription factor has been thoroughly characterized and itsrole upstream the transcriptional network involving Mybs TFs will be discussed. Understanding the molecularswitches controlling wood formation is of paramount importance for fundamental tree biology and has importantimplications in tree biotechnology.
YR 2017
FD 2017-07-14
LK http://hdl.handle.net/10630/14241
UL http://hdl.handle.net/10630/14241
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026