Microbial competition for phosphorus limits the CO 2 response of a mature forest.

Autor: Jiang M; College of Life Sciences, Zhejiang University, Hangzhou, China.; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Crous KY; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia. k.crous@westernsydney.edu.au., Carrillo Y; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Macdonald CA; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Anderson IC; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Boer MM; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Farrell M; CSIRO Agriculture and Food, Glen Osmond, South Australia, Australia., Gherlenda AN; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Castañeda-Gómez L; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.; SouthPole Environmental Services, Zurich, Switzerland., Hasegawa S; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.; Department of Forest and Climate, Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway., Jarosch K; Institute of Geography, University of Bern, Bern, Switzerland.; Agroecology and Environment, Agroscope, Zurich-Reckenholz, Switzerland., Milham PJ; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Ochoa-Hueso R; Department of Biology, IVAGRO, University of Cádiz, Cádiz, Spain.; Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, the Netherlands., Pathare V; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.; Institute of Genomic Biology, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, USA., Pihlblad J; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.; Birmingham Institute for Forest Research, University of Birmingham, Edgbaston, UK.; School of Geography, University of Birmingham, Birmingham, UK., Piñeiro J; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.; ETSI Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, Ciudad Universitaria, Madrid, Spain., Powell JR; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Power SA; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Reich PB; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.; Department of Forest Resources, University of Minnesota, St Paul, MN, USA.; Institute for Global Change Biology, University of Michigan, Ann Arbor, MI, USA.; School for the Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA., Riegler M; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Zaehle S; Max Planck Institute for Biogeochemistry, Jena, Germany., Smith B; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Medlyn BE; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia., Ellsworth DS; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.
Jazyk: angličtina
Zdroj: Nature [Nature] 2024 Jun; Vol. 630 (8017), pp. 660-665. Date of Electronic Publication: 2024 Jun 05.
DOI: 10.1038/s41586-024-07491-0
Abstrakt: The capacity for terrestrial ecosystems to sequester additional carbon (C) with rising CO 2 concentrations depends on soil nutrient availability 1,2 . Previous evidence suggested that mature forests growing on phosphorus (P)-deprived soils had limited capacity to sequester extra biomass under elevated CO 2 (refs. 3-6 ), but uncertainty about ecosystem P cycling and its CO 2 response represents a crucial bottleneck for mechanistic prediction of the land C sink under climate change 7 . Here, by compiling the first comprehensive P budget for a P-limited mature forest exposed to elevated CO 2 , we show a high likelihood that P captured by soil microorganisms constrains ecosystem P recycling and availability for plant uptake. Trees used P efficiently, but microbial pre-emption of mineralized soil P seemed to limit the capacity of trees for increased P uptake and assimilation under elevated CO 2 and, therefore, their capacity to sequester extra C. Plant strategies to stimulate microbial P cycling and plant P uptake, such as increasing rhizosphere C release to soil, will probably be necessary for P-limited forests to increase C capture into new biomass. Our results identify the key mechanisms by which P availability limits CO 2 fertilization of tree growth and will guide the development of Earth system models to predict future long-term C storage.
(© 2024. Crown.)
Databáze: MEDLINE
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