Non-structural carbohydrates and morphological traits of leaves, stems and roots from tree species in different climates

Zhang Guangqi, Maillard Pascale, Mao Zhun, Brancheriau Loïc, Engel Julien, Gérard Bastien, Fortunel Claire, Maeght Jean-Luc, Martínez-Vilalta Jordi, Ramel Merlin, Nourissier-Mountou Sophie, Fourtier Stephane, Stokes Alexia. 2022. Non-structural carbohydrates and morphological traits of leaves, stems and roots from tree species in different climates. BMC Research Notes, 15:251, 3 p.

https://doi.org/10.1186/s13104-022-06136-7

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Url - jeu de données - Entrepôt autre : https://doi.org/10.15454/MU0HXX

Résumé : Objectives: Carbon fixed during photosynthesis is exported from leaves towards sink organs as non-structural carbohydrates (NSC), that are a key energy source for metabolic processes in trees. In xylem, NSC are mostly stored as soluble sugars and starch in radial and axial parenchyma. The multi-functional nature of xylem means that cells possess several functions, including water transport, storage and mechanical support. Little is known about how NSC impacts xylem multi-functionality, nor how NSC vary among species and climates. We collected leaves, stem and root xylem from tree species growing in three climates and estimated NSC in each organ. We also measured xylem traits linked to hydraulic and mechanical functioning. Data description: The paper describes functional traits in leaves, stems and roots, including NSC, carbon, nitrogen, specific leaf area, stem and root wood density and xylem traits. Data are provided for up to 90 angiosperm species from temperate, Mediterranean and tropical climates. These data are useful for understanding the trade-offs in resource allocation from a whole-plant perspective, and to better quantify xylem structure and function related to water transportation, mechanical support and storage. Data will also give researchers keys to understanding the ability of trees to adjust to a changing climate.

Mots-clés libres : Angiosperms, Non‑structural carbohydrates, Fibers, Functional traits, Mediterranean, Parenchyma, Root, Temperate, Tropical, Vessels

Classification Agris : F40 - Écologie végétale
F50 - Anatomie et morphologie des plantes

Champ stratégique Cirad : CTS 1 (2019-) - Biodiversité

Agences de financement hors UE : China Scholarship Council, Agence Nationale de la Recherche

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