Soil nitrogen drives inverse acclimation of xylem growth cessation to rising temperature in Northern Hemisphere conifers
National Academy of Sciences
2025
zhang-et-al-2025-soil-nitrogen-drives-inverse-acclimation-of-xylem.pdf - Publisher's version - 1.09 MB
How to cite: Y. Zhang,J. Huang,M. Wang,W. Wang,F. Yang,A. Deslauriers,P. Fonti,E. Liang,H. Mäkinen,W. Oberhuber,C.B.K. Rathgeber,R. Tognetti,V. Treml,B. Yang,L. Zhai,S. Antonucci,V. Buttò,J.J. Camarero,F. Campelo, [...] & S. Rossi, Soil nitrogen drives inverse acclimation of xylem growth cessation to rising temperature in Northern Hemisphere conifers, Proc. Natl. Acad. Sci. U.S.A. 122 (30) e2421834122, https://doi.org/10.1073/pnas.2421834122 (2025).
Pysyvä osoite
Tiivistelmä
Controlled experiments suggest that the seasonal build-up of nitrogen (N) limitation constrains the responses of forest autumn phenology to elevated temperatures. Therefore, rising soil N is expected to increase the delaying effects of elevated temperature on the end of the season, i.e., leaf senescence. However, the interactive effects of temperature, soil N, and aridity on xylem autumn phenology remain unknown. We conducted a wide spatial analysis from 75 conifer sites in the Northern Hemisphere and found that rising soil N increases the delaying effects of elevated temperature on the end of xylem cell wall thickening but reduced the delaying effects on the cessation of cell enlargement, especially in humid regions. The contrasting effects of elevated soil N on cell enlargement versus cell wall thickening could affect xylem cell anatomy, thereby induce changes in wood density, and induce a decoupling of stem size growth from photosynthate production. These analyses extend previous findings on forest autumn phenology by systematically investigating the spatial variation in the interactive effects of temperature and soil N on xylem autumn phenology at the cellular scale.
ISBN
OKM-julkaisutyyppi
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Julkaisusarja
Proceedings of the National Academy of Sciences of the United States of America
Volyymi
122
Numero
30
Sivut
Sivut
6 p.
ISSN
0027-8424
1091-6490
1091-6490