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Seasonal Alterations in Organic Phosphorus Metabolism Drive the Phosphorus Economy of Annual Growth in F. sylvatica Trees on P-Impoverished Soil.
Netzer, Florian; Herschbach, Cornelia; Oikawa, Akira; Okazaki, Yozo; Dubbert, David; Saito, Kazuki; Rennenberg, Heinz.
Affiliation
  • Netzer F; Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-University Freiburg, Freiburg, Germany.
  • Herschbach C; Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-University Freiburg, Freiburg, Germany.
  • Oikawa A; Ecosystem Physiology, Institute of Forest Sciences, Albert-Ludwigs-University Freiburg, Freiburg, Germany.
  • Okazaki Y; Metabolomics Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Japan.
  • Dubbert D; Metabolomics Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Japan.
  • Saito K; Ecosystem Physiology, Institute of Forest Sciences, Albert-Ludwigs-University Freiburg, Freiburg, Germany.
  • Rennenberg H; Metabolomics Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Japan.
Front Plant Sci ; 9: 723, 2018.
Article de En | MEDLINE | ID: mdl-29928284
ABSTRACT
Phosphorus (P) is one of the most important macronutrients limiting plant growth and development, particularly in forest ecosystems such as temperate beech (Fagus sylvatica) forests in Central Europe. Efficient tree internal P cycling during annual growth is an important strategy of beech trees to adapt to low soil-P. Organic P (Porg) is thought to play a decisive role in P cycling, but the significance of individual compounds and processes has not been elucidated. To identify processes and metabolites involved in P cycling of beech trees, polar-metabolome and lipidome profiling was performed during annual growth with twig tissues from a sufficient (Conventwald, Con) and a low-soil-P (Tuttlingen, Tut) forest. Autumnal phospholipid degradation in leaves and P export from senescent leaves, accumulation of phospholipids and glucosamine-6-phosphate (GlcN6P) in the bark, storage of N-acetyl-D-glucosamine-6-phosphate (GlcNAc6P) in the wood, and establishing of a phospholipid "start-up capital" in buds constitute main processes involved in P cycling that were enhanced in beech trees on low-P soil of the Tut forest. In spring, mobilization of P from storage pools in the bark contributed to an effective P cycling. Due to the higher phospholipid "start-up capital" in buds of Tut beeches, the P metabolite profile in developing leaves in spring was similar in beech trees of both forests. During summer, leaves of Tut beeches meet their phosphate (Pi) needs by replacing phospholipids by galacto- and sulfolipids. Thus, several processes contribute to adequate Pi supply on P impoverished soil thereby mediating similar growth of beech at low and sufficient soil-P availability.
Mots clés

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Type d'étude: Health_economic_evaluation Langue: En Journal: Front Plant Sci Année: 2018 Type de document: Article Pays d'affiliation: Allemagne

Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Type d'étude: Health_economic_evaluation Langue: En Journal: Front Plant Sci Année: 2018 Type de document: Article Pays d'affiliation: Allemagne