Soil nitrogen drives inverse acclimation of xylem growth cessation to rising temperature in Northern Hemisphere conifers

• 成果类型: Article
• 署名作者: Zhang, Yaling; Huang, Jian- Guo; Wang, Minhuang; Wang, Wenjin; Yang, Feiyu; Deslauriers, Annie; Fonti, Patrick; Liang, Eryuan; Maekinen, Harri; Oberhuber, Walter; Rathgeber, Cyrille B. K.; Tognetti, Roberto; Treml, Vaclav; Yang, Bao; Zhai, Lihong; Antonucci, Serena; Butto, Valentina; Camarero, J. Julio; Campelo, Filipe; Cufar, Katarina; De Luis, Martin; Fajstavr, Marek; Giovannelli, Alessio; Gricar, Jozica; Gruber, Andreas; Gryc, Vladimir; Gueney, Aylin; Jyske, Tuula; Kaspar, Jakub; King, Gregory; Krause, Cornelia; Lemay, Audrey; Lombard, Fabio; Castillo, Edurne Martinez del; Morin, Hubert; Nabais, Cristina; Noejd, Pekka; Peters, Richard L.; Prislan, Peter; Saracinoa, Antonio; V. Shishovbb, Vladimir; Vavrciks, Hanus; Vieirac, Joana; Zengd, Qiao; Rossi, Sergio
• 署名单位: Chinese Academy of Sciences; South China Botanical Garden, CAS; Zhejiang University; Guangdong Academy of Sciences; Institute of Eco-environmental & Soil Sciences, Guangdong Academy of Sciences; University of Quebec; University of Quebec Chicoutimi; Swiss Federal Institutes of Technology Domain; Swiss Federal Institute for Forest, Snow & Landscape Research; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Natural Resources Institute Finland (Luke); University of Innsbruck; Universite de Lorraine; AgroParisTech; Free University of Bozen-Bolzano; Charles University Prague; Nanjing University; University of Molise; University of Quebec; University Quebec Abitibi-Temiscamingue; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto Pirenaico de Ecologia (IPE); Universidade de Coimbra; University of Ljubljana; Johannes Gutenberg University of Mainz; Mendel University in Brno; Slovenian Forestry Institute; Izmir Katip Celebi University; University of Alberta; Universita Mediterranea di Reggio Calabria; Technical University of Munich; University of Naples Federico II; Siberian Federal University; Guangdong Academy of Sciences; Guangzhou Institute of Geography, Guangdong Academy of Sciences
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-9408
• DOI: 10.1073/pnas.2421834122
• 发表日期: 2025-07-29
• 关键词: cambial activity; wood formation; phenology; carbon; water; photosynthesis; patterns

摘要

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.