Leaf phosphorus fractions vary with leaf economic traits among 35 Australian woody species.

Autor: Tsujii Y; Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan.; Faculty of Science, Kyushu University, Fukuoka, 819-0395, Japan.; School of Natural Sciences, Macquarie University, Penrith, NSW, 2109, Australia.; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2751, Australia., Atwell BJ; School of Natural Sciences, Macquarie University, Penrith, NSW, 2109, Australia., Lambers H; School of Biological Sciences, The University of Western Australia, Perth, WA, 6009, Australia., Wright IJ; School of Natural Sciences, Macquarie University, Penrith, NSW, 2109, Australia.; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2751, Australia.; ARC Centre for Plant Success in Nature & Agriculture, Western Sydney University, Richmond, NSW, 2753, Australia.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2024 Mar; Vol. 241 (5), pp. 1985-1997. Date of Electronic Publication: 2024 Jan 08.
DOI: 10.1111/nph.19513
Abstrakt: Adaptations of plants to phosphorus (P) deficiency include reduced investment of leaf P in storage (orthophosphates in vacuoles), nucleic acids and membrane lipids. Yet, it is unclear how these adaptations are associated with plant ecological strategies. Five leaf P fractions (orthophosphate P, P i ; metabolite P, P M ; nucleic acid P, P N ; lipid P, P L ; and residual P, P R ) were analysed alongside leaf economic traits among 35 Australian woody species from three habitats: one a high-P basalt-derived soil and two low-P sandstone-derived soils, one undisturbed and one disturbed by human activities with artificial P inputs. Species at the undisturbed low-P site generally exhibited lower concentrations of total leaf P ([P total ]), primarily associated with lower concentrations of P i , and P N . The relative allocation of P to each fraction varied little among sites, except that higher P L per [P total ] (rP L ) was recorded at the undisturbed low-P site than at the high-P site. This higher rP L , reflecting relative allocation to membranes, was primarily associated with lower concentrations of leaf nitrogen at the undisturbed low-P site than at the high-P site. Associations between leaf P fractions and leaf nitrogen may provide a basis for understanding the variation in plant ecological strategies dependent on soil P availability.
(© 2024 The Authors. New Phytologist © 2024 New Phytologist Foundation.)
Databáze: MEDLINE
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