RT Journal Article
T1 Arginine, a key amino acid for nitrogen nutrition and metabolism of forest trees
A1 Ávila-Sáez, Concepción
A1 Llebrés, María Teresa
A1 Cánovas-Ramos, Francisco Miguel
A1 Castro-Rodríguez, Vanessa Viviana
K1 Arginina
K1 Ornitina carbamoiltransferasa
K1 Nitrógeno
K1 Metabolismo - Regulación
K1 Arboles forestales - Metabolismo
AB Despite the extraordinary significance of forests from an environmental, economic, and social perspectives, our understanding of the mechanisms underlying the growth, development and productivity of forest trees remains limited compared to crop plants mainly due to their perennial growth and recalcitrance to molecular analysis. Amino acids and peptides are key nitrogen (N) sources available in the soil for tree nutrition. Furthermore, when excess N (organic or inorganic) is available, trees can assimilate and store it directly as free arginine, the amino acid with the highest N content, or as a constituent of storage proteins in vegetative and reproductive organs. Arginine is, therefore, of paramount importance in N metabolism, and studying its biosynthesis and metabolic utilization is crucial for understanding N homeostasis in forest trees. This work reviews several aspects of arginine biochemistry and molecular biology in woody plants, including its transport, storage, and mobilization, as well as the enzymes involved in its biosynthesis and their subcellular distribution. Arginine biosynthesis is allosterically controlled by pathway’s end-product, and increased glutamine levels act as a signal of N abundance, triggering a response that enhances flux through the pathway, favoring N storage. Additionally, this review discusses the molecular regulation of arginine biosynthesis at both transcriptional and post-transcriptional levels, whit an emphasis on key processes such as embryogenesis and N recycling.
PB Oxford Academic
SN 0022-0957
YR 2025
FD 2025-06-10
LK https://hdl.handle.net/10630/39041
UL https://hdl.handle.net/10630/39041
LA eng
NO Concepción Ávila, María Teresa Llebrés, Francisco M Cánovas, Vanessa Castro-Rodríguez, Arginine, a key amino acid for nitrogen nutrition and metabolism of forest trees, Journal of Experimental Botany, 2025;, eraf260
NO Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 26 ene 2026